P E R F O R M a N C E E N G I N E C O M P O N E N

PERFORMANCE ENGINE COMPONENTS A History Of Excellence

Since it was formed in 1958 by Mike Costin and the late Keith Duckworth in a small workshop in Acton, England, Cosworth has become the most successful engine manufacturer in the history of Formula One. In addition it has achieved enormous success in IndyCars, Champ Cars, rallying, sports cars and touring cars.

The company soon outgrew its little workshop in Acton and moved to north London, where the Ford 105E engine was developed. Cosworth’s first race win followed – at Goodwood in 1960, a Formula Junior win for the young Jim Clark.

By the mid 1960s the company had moved again, to Northampton, and in 1966 a contract was signed with Ford to develop a new three-litre Formula One engine. The legendary DFV was born. Jim Clark again provided the maiden victory, first time out at the Dutch Grand Prix in 1967. The DFV went on to dominate F1 for 15 years with 155 race wins.

In the 1970s the Cosworth DFX ruled the US Indycar scene with an incredible 151 race wins in a 14-year reign, including 10 driver’s championships and 10 Indianapolis 500 victories.

Through the 1980s and ‘90s, Cosworth continued to provide race-winning power with three World Touring Car titles in 1987, ‘93 and ‘94. In Formula 1 the HB engine won 11 races, while in the US Nigel Mansell’s CART championship in 1993 and Jacques Villeneuve’s in 1995 were both powered by Cosworth XBs. In 1994 the Zetec V8 F1 engine took Michael Schumacher to his first world driver’s title. In rallying the Ford Escort Cosworth and the Duratec-R powered Focus WRC gave Ford yet more success.

In 2004 Cosworth still provided the power to 30% of the F1 grid, as well as to the entire Champ Car World Series and the Ford Focus WRC cars. In 2005 Cosworth powered Red Bull’s impressive debut F1 season. In 2006, Cosworth powered the Williams F1 car with a brand new V8 engine which was later acknowledged as the most powerful and highest revving engine on the 2006 grid.

Today, Cosworth continues to enjoy racing success in various series including Formula Atlantic and Super GT. The engineering expertise gained over the last 5 decades have enabled Cosworth to launch a broad array of high performance engine components for the aftermarket. With the product range increasing on a continual basis, Cosworth power is now accessible to everyone. A History Of Excellence Contents

Big Valve Cylinder Heads...... 4

High Performance Short Block Assemblies...... 6

High Performance Long Block Assemblies. 8

Billet Crankshafts. 10

Stroker Engine Kits. 11

Forged Connecting Rods. 12

Ultra High Performance Head Studs . 13

Ultra High Performance Engine Bearings...... 14

Forged Pistons . 16

Single Forged Pistons...... 18

Spare Piston Pins and Circlips . 19

Performance Ring Sets ...... 20

Kevlar High Performance Timing Belts. 21

High Performance Camshafts...... 22

High Performance Valve Train...... 24

High Performance Head Gaskets...... 26

Oil Control...... 28

High Flow Synthetic Air Filters...... 31

Mazda MX5 Supercharger system 2006-2008. 32

Induction / Fuel. 34

Subaru Intercooler System. 36

NGK High Performance Spark Plugs ...... 37

Miscellaneous...... 38

Disclaimer...... 39

3 Big Valve Cylinder Heads

For over 40 years, Cosworth has been Modified from new OE cylinder Each original cylinder head design is the leader in innovative multi-valve head castings, substantial gas flow carefully evaluated and tested to establish cylinder head design for both racing and improvements and upgraded valve train the improvements required to meet high performance production cars. The components offer superior performance the target performance level. Hours of Cosworth CNC Ported Big Valve Cylinder for your high performance engine. testing and flow bench validation are head range is the latest advancement. used to determine the best advanced port design yielding maximum usable CNC Ported Big Valve Cylinder Heads power and response. However, there

Part No. Application Specification is more to cylinder head design than Subaru just maximum flow. It is critical that port KK3670 Subaru WRX STI EJ25 (2.5L) Pair 2004-2006 velocity is maintained to ensure drivability 20001699 Subaru WRX STI EJ25 (2.5L) Pair 2007 with air injection ports and valve train components are matched 20004544 Subaru WRX STI EJ25 (2.5L) Pair 2008 with dual AVCS to guarantee reliable performance. Once Nissan all of these factors have been tested KK3918 Nissan VQ35 (3.5L) Pair 2006-2007 including Rev-Up version and validated, the final port contour is Mitsubishi digitized. Using the digitized program, KK3672 Mitsubishi Evo VII-VIII 4G63 (2.0L) 2000-2005 we then reshape both intake and exhaust KK3852 Mitsubishi Evo IX 4G63 (2.0L) 2006 MIVEC ports using a 5 axis CNC mill producing TBA Mitsubishi Evo X 4B11T (2.0L) 2008 MIVEC an accurate and consistent port shape Others every time. In addition to re-shaping and KK3673 BMW MINI Cooper/Cooper S (1.6L) enlarging the intake and exhaust ports, 20000691 Ford Duratec, 2.0L/2.3L most Big Valve Cylinder heads feature a 20000704 Mazda MZR, 2.0L/2.3L re-shaped combustion chamber to un- shroud the valves increasing air flow CNC Ported Big Valve Cylinder Heads with Camshafts and performance. After machining, each Part No. Application Specification cylinder head receives a multi-angle high Subaru performance valve job on our precision Pair with KK3766 Camshafts and valve lash set SB8010 Subaru WRX STI EJ25 (2.5L) with cam bucket (USA) CNC valve seat cutter. Then each cylinder Pair with KK3920 Camshafts and valve lash set head is ultrasonically cleaned, serialized SB8012 Subaru WRX STI EJ25 (2.5L) with cam bucket (Japan/Euro) and finally hand assembled with select 20002024 Subaru WRX STI EJ25 (2.5L) Pair 2007 with KK3766 Camshafts (USA) high performance valve train components, 20002026 Subaru WRX STI EJ25 (2.5L) Pair 2007 with KK3920 Camshafts (Japan/Euro) ready to install on your engine.

Mitsubishi 4G63 Subaru EJ25 Nissan VQ35DE

4 Big Valve Cylinder Heads

Key Features: ■■ All new OE Castings ■■ Enlarged intake and exhaust ports ■■ Large diameter stainless steel intake valves ■■ Large diameter inconel exhaust valves ■■ Hi-rev, dual valve springs ■■ Titanium retainers ■■ Hardened steel spring platforms ■■ Reshaped combustion chamber on most applications ■■ Flow bench proven design ■■ Dynamometer tested ■■ Machined Cosworth logo ■■ Precision multi-angle valve job ■■ Pre-assembled, ready to install ■■ Machined port bore finish ■■ Knife edge port divider

Cylinder head development

CNC Valve seat cutter

5 High Performance Short Block Assemblies

Cosworth high performance engine foundation of the performance build. Every builders in the Cosworth engine assembly assemblies are the perfect basis for block is thoroughly inspected before the facility. Each high performance engine your high performance application. Each cylinders are honed to perfection. We then assembly includes a complete specification version has gone through countless balance the rotating assembly that includes sheet listing all critical dimensions along hours of engineering and evaluation to either a new factory forged crankshaft or with a serialized plaque. For maximum determine the best combination of parts Cosworth billet crank along with Cosworth performance, combine with a Cosworth and build specification, ensuring maximum forged connecting rods, Cosworth tri-metal CNC ported Big Valve Cylinder Head and reliable performance. Each Cosworth bearings and Cosworth forged pistons. camshaft set. high performance engine assembly starts The motorsport grade parts are then with all new select components as the professionally assembled by expert engine

High Performance Short Blocks

Part No. Application Specification Subaru SB8005 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods SB8007 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods with 79mm Billet Crank 20003486 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods with 81mm Billet Crank Nissan 20000067 Nissan VQ35 Short Block (3.5L) Lo comp 8.8:1 KK3879 Nissan VQ35 Short Block (3.5L) Hi comp 11:1 Mitsubishi CI8015 Mitsubishi Evo VIII/IX 4G63 Short Block (2.0L) Forged Pistons, Rods CI8018 Mitsubishi Evo VII/IX 4G63 Short Block (2.2L) Forged Pistons, Rods with 94mm Billet Crank

Subaru EJ25 High Performance Short Block 2.5L The Cosworth EJ25 is an excellent starting point for high performance and track day applications.

■■ New Subaru EJ25 STI EJ257 Block ■■ Balanced to within 0.5 gram ■■ New Subaru EJ25 STI Forged ■■ Complete blue-printed assembly Crankshaft or Cosworth Billet Crank ■■ Ring gap set (79mm) ■■ Bearing clearance checked ■■ Cosworth Forged H-beam connecting ■■ Deck height checked rods ■■ Connecting Rod side clearance ■■ Cosworth Forged Pistons (99.5mm) checked and rings ■■ Crankshaft end float checked ■■ Cosworth Tri-metal bearings

6 High Performance Short Block Assemblies

Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.0L The Cosworth 2.0L 4G63 is an excellent starting point for high performance and track day applications.

■■ New Mitsubishi 4G63 Evolution Block ■■ Piston squirt jets ■■ New Mitsubishi forged crankshaft ■■ Balanced to within 0.5 gram (88mm) ■■ Complete blue-printed assembly ■■ Cosworth Forged H-beam connecting ■■ Ring gap set rods ■■ Bearing clearance checked ■■ Cosworth Forged Pistons (85mm) and ■■ Deck height checked rings ■■ Connecting Rod side clearance ■■ Cosworth Tri-metal bearings checked High Performance Short Blocks ■■ Cosworth Heavy Duty main studs ■■ Crankshaft end float checked Part No. Application Specification Subaru Mitsubishi 4G63 (Evolution VII-IX) High Performance Short Block 2.2L SB8005 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods The Cosworth 4G63 2.2L stroker engine combines the perfect bore to stroke ratio, yielding SB8007 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods with 79mm Billet Crank potentially big gains in torque while still allowing the engine to rotate and produce power 20003486 Subaru STI EJ25 Short Block (2.5L) Forged Pistons, Rods with 81mm Billet Crank at higher RPMs. Nissan 20000067 Nissan VQ35 Short Block (3.5L) Lo comp 8.8:1 ■■ New Mitsubishi 4G63 Evolution Block ■■ Balanced to within 0.5 gram KK3879 Nissan VQ35 Short Block (3.5L) Hi comp 11:1 ■■ New Cosworth Billet Crank (94mm) ■■ Complete blue-printed assembly Mitsubishi ■■ Cosworth Forged H-beam connecting ■■ Ring gap set CI8015 Mitsubishi Evo VIII/IX 4G63 Short Block (2.0L) Forged Pistons, Rods rods ■■ CI8018 Mitsubishi Evo VII/IX 4G63 Short Block (2.2L) Forged Pistons, Rods with 94mm Billet Crank Bearing clearance checked ■■ Cosworth Forged Pistons (86mm) and ■■ Deck height checked rings ■■ Connecting Rod side clearance ■■ Cosworth Tri-metal bearings checked ■■ Cosworth Heavy Duty main studs ■■ Crankshaft end float checked ■■ Piston squirt jets

Nissan VQ35DE (350Z-G35) High Performance Short Block 3.5L The Cosworth VQ35DE high performance short block is the perfect foundation for your high performance application. Available in either high compression 11:1 or low compression 8.8:1 for turbo or supercharged applications.

■■ New Nissan forged crankshaft ■■ Connecting Rod side clearance (81.4mm) checked ■■ Cosworth Forged H-beam connecting ■■ Crankshaft end float checked rods ■■ Cosworth Forged Pistons (95.5mm) and rings ■■ Cosworth Tri-metal bearings ■■ Cosworth Heavy Duty main studs ■■ Piston squirt jets ■■ Balanced to within 0.5 gram ■■ Complete blue-printed assembly ■■ Ring gap set ■■ Bearing clearance checked ■■ Deck height checked

7 High Performance Long Block Assemblies

The Cosworth Subaru EJ25 CS600 series steel studs and sealed with a Cosworth maximum lubrication. This proven engine is designed for extreme track day use and high performance stopper layer steel combination has been used by top teams the demanding performance enthusiast. head gasket. Finally, we install one of our to win events in both North America and Each assembly is precision built by one blue-printed, high pressure oil pumps for Europe. of Cosworth’s skilled craftsmen using the finest components from our parts catalogue to ensure maximum reliable power and performance. Starting with a new Subaru EJ257 semi closed deck block, we meticulously diamond hone each bore to guarantee perfect piston to cylinder wall clearance. The block is then assembled with our Forged Pistons, motorsport grade Forged H-Beam connecting rods along with our high performance rod and main bearings and a new STI forged crankshaft. For maximum performance, an optional steel billet crank is available (CS600X). Once the cylinder block assembly is completed, we install a pair of our CNC machine port-bored Big Valve Cylinder heads with our proven “S2” camshafts complete with valve lash set to our specifications. The cylinder heads are secured with our high performance 11mm

High Performance Long Block Asse

Part No. Specification Subaru - North American spec EJ25 “CS600 & CS600X” 20000162 EJ25 (2.5L) with Big Valve Cylinder heads and KK3766 Camshafts - Billet Crankshaft 20000161 EJ25 (2.5L) with Big Valve Cylinder heads and KK3766 Camshafts - STD Crankshaft 20002503 EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - Billet Crankshaft 20002504 EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - STD Crankshaft Subaru - North American spec EJ25 “CS600 & CS600X” 81mm Stroke EJ25 (2.5L) 2004-06 with Big Valve Cylinder heads and KK3766 Camshafts - 81mm Billet 20003488 Crankshaft EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - 81mm Billet 20003489 Crankshaft Subaru - European/Asia spec EJ25 “CS600 & CS600X” 20000160 EJ25 (2.5L) with Big Valve Cylinder heads and KK3920 Camshafts - Billet Crankshaft SB8008 EJ25 (2.5L) with Big Valve Cylinder heads and KK3920 Camshafts - STD Crankshaft 20002503 EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - Billet Crankshaft 20002504 EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - STD Crankshaft Subaru - European/Asia spec EJ25 “CS600 & CS600X” 81mm Stroke EJ25 (2.5L) 2004-06 with Big Valve Cylinder heads and KK3920 Camshafts - 81mm Billet 20003490 Crankshaft EJ25 (2.5L) 2007 with Big Valve Cylinder heads and KK3766 Camshafts - 81mm Billet 20003489 Crankshaft

Includes engine assembly with cylinder heads, camshafts, oil pump and cam covers

8 High Performance Long Block Assemblies

Features ■■ Cosworth forged H-beam Connecting ■■ New Subaru EJ25 STI Engine case rods ■■ New Subaru EJ25 STI Forged ■■ Cosworth Forged Pistons and rings Crankshaft ■■ Cosworth motorsport Tri-metal bearings ■■ Optional Cosworth Billet Crankshaft ■■ Balanced to within 0.5 gram (79/81mm stroke available) ■■ Complete blue-printed assembly ■■ Enlarged intake and exhaust ports ■■ Large diameter stainless steel intake valves ■■ Large diameter inconel exhaust valves ■■ Hi-rev, dual valve springs ■■ Titanium retainers ■■ Hardened steel spring platforms ■■ Multi angle valve job ■■ CNC machined port finish ■■ Knife edge port divider ■■ Cosworth S2 High lift camshafts ■■ Valve lash set ■■ Cosworth high pressure oil pump ■■ Cam covers ■■ Cosworth serial number

9 Billet Crankshafts

Increased engine performance often rod journals are lubricated from only one rod bearing failure. Cosworth Subaru means increased engine speed and load. main oil feed. Cosworth billet crankshafts crankshafts are manufactured entirely Original factory crankshafts may not feature full-flow oiling whereby each from high grade steel in a light-weight, high be able to withstand the added stress, rod journal is lubricated from two main strength design with a unique Isotropic resulting in catastrophic engine failure. sources. This provides superior lubrication Superfinish. Additionally, factory Subaru crankshaft during sustained high rpm use preventing

Features Include: ■■ Superior lubrication ■■ Profiled counterweights ■■ High strength ■■ Light weight

Billet Crankshafts

Part No. Application Specification Mitsubishi PR7863 Mitsubishi EVO 4G63 (2.2L conversion) 94mm stroke - Fully counterweighted \ Billet Steel Subaru 20001414 Subaru WRX STI EJ25 (2.5L) 79mm stroke - Light weight version \ Billet Steel 20001546 Subaru WRX STI EJ25 (2.5L) 81mm stroke - Light weight version \ Billet Steel

Cosworth Tech: Isotropic the need for replacement. By creating a by fractions of a second, so it all comes Superfinish smooth and shiny finish, the ISF Process down to getting the most power output The ISF Process is a chemically improves the life and efficiency of moving possible. With the ISF Process, the energy accelerated vibratory mass finishing metal parts. Increased life translates into normally lost to friction is now available process Any time two metal parts come lower operating costs as well as better in the form of increased power output. into contact with each other, the resulting performance. In extreme environments, Once friction is reduced, the engine will friction causes heat build up. These high such as automobile or motorcycle racing, run cooler allowing for longer durability of temperatures cause wear and over time every component must work in harmony parts and fewer failures. reduce efficiency and eventually create at 100% capacity. Races are won and lost

■■ Allows a freer movement of parts with less surface resistance ■■ Extends life of parts and reduces risk of part failure during operation ■■ Reduces maintenance expenses and fuel costs ■■ Improves oil shedding ■■ Increases power output resulting in increased speed

10 Billet Crankshafts Stroker Engine Kits

Cosworth stroker kits are the perfect way Stroker Kits to add displacement, torque and power Part No. Application to your engine. Each kit includes select Mitsubishi matched components from our parts list KK3831 Mitsubishi Evo 4G63 (2.2L) ensuring reliable performance. Subaru 20002500 Subaru EJ25 (2.6L) 20002501 Subaru EJ20 (2.2L) forged (79mm stroke) Crank 20002502 Subaru EJ20 (2.2L) Billet (79mm stroke) Crank

Subaru EJ25 2.6L ■■ Cosworth Forged Pistons (99.5mm) ■■ Cosworth Fully Counterweighted Billet Crankshaft (81mm) ■■ Forged Cosworth Connecting Rods ■■ Cosworth Rod and Main Bearings ■■ Cosworth Piston Rings Billet Crankshafts

Subaru EJ25 2.6L

Mitsubishi 4G63 (Evolution VII-IX) 2.2L ■■ Cosworth Forged Pistons (86mm) ■■ Cosworth Fully Counterweighted Billet Crankshaft (94mm) ■■ Forged Cosworth Connecting Rods ■■ Cosworth Rod and Main Bearings ■■ Cosworth Piston Rings

Mitsubishi 4G63 2.2L

11 Forged Connecting Rods

The connecting rod is the vital link between the piston and power. When engine output is increased, the demands placed on the connecting rod increase as well. To ensure engine reliability in all conditions, original connecting rods should be replaced with heavy duty specification parts. Cosworth Forged Connecting Rods are manufactured from high strength 4340 (EN24) steel and machined to exacting tolerances.

Features Include: ■■ Strong, light weight H-beam design ■■ Heavy duty rod bolt (260,000psi) ■■ Manufactured from 4340 (EN24) steel ■■ Small end bushed for floating pin

Forged Connecting Rods

Part No. Application Specification Subaru 20002587 Subaru WRX STI EJ25 (2.5L) set of four H-Beam 20002587 Subaru WRX EJ20 (2.0L) set of four H-Beam Mitsubishi 20002632 Mitsubishi Evo 4G63 (2.0L) set of four H-Beam 20002596 Mitsubishi 4B11T (2.0L) set of four H-Beam Nissan 20002585 Nissan VQ35 (3.5L) set of six H-Beam 20002588 Nissan RB26 (2.6L) set of six H-Beam 20002589 Nissan SR20 (2.0L) set of four H-Beam Honda 20002590 Honda K20 (2.0L) set of four H-Beam

12 Forged Connecting Rods Ultra High Performance Head Studs

Essential for high performance engine are manufactured from H11 tool steel Features: builds, heavy duty head studs reduce with 260,000psi tensile strength and ■■ Essential for high power applications cylinder head movement in high boost come complete with nuts and washers. ■■ Superior strength compared to other or high compression engines optimising Manufactured with hex broach end for brands cylinder head to block sealing. Cosworth ease of installation. ■■ High clamping force helps to seal block Ultra High Performance Head Studs to cylinder head joint ■■ Hex broach ends ease installation Ultra High Performance Head Stud Kits ■■ Roll Die formed threads ■■ Part No. Application 260ksi+ (260,000psi+) tensile strength 20002440 Subaru WRX STI EJ25/EJ20 11mm ■■ Special heat treat process includes 20002442 Mitsubishi Evo 4G63 11mm heating in vacuum sealed furnace and 20006025 Mitsubishi 4B11T 11mm quenched in a nitrogen chamber for 20002444 Nissan SR20DET 11mm precision control

Forged Connecting Rods

13 Ultra High Performance Engine Bearings

Engine bearings are one of the most vital High Performance Engine Bearings components within an engine and are Part No. Application Specification often overlooked when considering high Subaru EJ25 / EJ20 performance upgrades. Performance 20002720 Subaru WRX/STI EJ25/ EJ20 Main Bearing Set - Tri Metal Size 0 engineered, multi-layer bearings generate 20002721 Subaru WRX/STIEJ25/ EJ20 Rod Bearing Set - Tri Metal Size 0 less heat than normal bearings by reducing PR7940 Subaru WRX/STI EJ25/ EJ20 Main Bearing Set - Tri Metal Size 1 friction. Cosworth race bearing sets feature PR7889 Subaru WRX/STIEJ25/ EJ20 Rod Bearing Set - Tri Metal Size 1 unique combinations of design, metallurgy SB0006 Subaru WRX/ STI EJ25/EJ20 Main Bearing Set - Tri Metal Size 2 and engineering to deliver performance SB0007 Subaru WRX/STI EJ25/EJ20 Rod Bearing Set - Tri Metal Size 2 in extreme conditions. Cosworth Race Mitsubishi Evo 4G63 “Evo” 1992-2006 bearings sets are available in three sizes 20002723 Mitsubishi Evo 4G63 (2.0L) Main Bearing Set - Tri Metal Size 0 to accommodate most applications. 20002722 Mitsubishi Evo 4G63 (2.0L) Rod Bearing Set - Tri Metal Size 0 PR7894 Mitsubishi Evo 4G63 (2.0L) Main Bearing Set - Tri Metal Size 1 Engineered with the following features: PR7893 Mitsubishi Evo 4G63 (2.0L) Rod Bearing Set - Tri Metal Size 1 ■■ High strength overlay plate with PR7427 Mitsubishi Evo 4G63 (2.0L) Main Bearing Set - Tri Metal Size 2 reduced thickness for better oil control PR7428 Mitsubishi Evo 4G63 (2.0L) Rod Bearing Set - Tri Metal Size 2 and less friction PR7429 Mitsubishi Evo 4G63 (2.0L) Thrust Bearing set ■■ Hardened steel backing on all Nissan VG35DE connecting rod bearings 20002725 Nissan VQ35 (3.5L) Main Bearing Set - Tri Metal Size 0 ■■ Increased crush for better retention 20002724 Nissan VQ35 (3.5L) Rod Bearing Set - Tri Metal Size 0 PR7911 Nissan VQ35 (3.5L) Main Bearing Set - Tri Metal Size 1 ■■ 3/4 grooving on Main Bearings PR7910 Nissan VQ35 (3.5L) Rod Bearing Set - Tri Metal Size 1 providing optimum oil supply PR7853 Nissan VQ35 (3.5L) Main Bearing Set - Tri Metal Size 2 ■■ Tight consistent wall tolerances PR7854 Nissan VQ35 (3.5L) Rod Bearing Set - Tri Metal Size 2 ■■ Oversize chamfers where applicable PR7859 Nissan VQ35 (3.5L) Thrust Bearing Set ■■ Flash plating eliminated for improved heat transfer ■■ Tested to over 1000 horsepower!

14 Ultra High Performance Engine Bearings

High Performance Engine Bearings Cosworth High performance engine

Part No. Application Specification bearings are now available in three Nissan SR20DET (except RNN14 Pulsar Gti-R) sizes. It is imperative that bearing 20002727 Nissan SR20 (2.0L) Main Bearing Set - Tri Metal Size 0 clearances are measured before 20002726 Nissan SR20 (2.0L) Rod Bearing Set - Tri Metal Size 0 selecting the appropriate bearing size. PR7896 Nissan SR20 (2.0L) Main Bearing Set - Tri Metal Size 1 ■■ Size 0 generally provides close to PR7895 Nissan SR20 (2.0L) Rod Bearing Set - Tri Metal Size 1 factory oil clearances PR7851 Nissan SR20 (2.0L) Main Bearing Set - Tri Metal Size 2 ■■ Size 1 usually provides slightly PR7852 Nissan SR20 (2.0L) Rod Bearing Set - Tri Metal Size 2 larger than factory oil clearances PR7937 Nissan SR20 (2.0L) Thrust Bearing Set ■■ Size 2 provides large oil clearances Nissan RB25/26 20002729 Nissan RB25/26 Main Bearing Set - Tri Metal Size 0 20002728 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 0 PR7892 Nissan RB25/26 Main Bearing Set - Tri Metal Size 1 PR7891 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 1 PR7655 Nissan RB25/26 Main Bearing Set - Tri Metal Size 2 PR7656 Nissan RB25/26 Rod Bearing Set - Tri Metal Size 2 Honda K20/K23/K24 (except A3) 20002731 Honda K20 (2.0L) Main Bearing Set - Tri Metal Size 0 20002730 Honda K20 (2.0L) Rod Bearing Set - Tri Metal Size 0 PR7914 Honda K20 (2.0L) Main Bearing Set - Tri Metal Size 1 PR7912 Honda K20 (2.0L) Rod Bearing Set - Tri Metal Size 1 PR7915 Honda K20 (2.0L) Main Bearing Set - Tri Metal Size 2 PR7913 Honda K20 (2.0L) Rod Bearing Set - Tri Metal Size 2 PR7916 Honda K20 (2.0L) Thrust Bearing Set

15 Forged Pistons

With 50 years of world class engine design Features & Benefits: and manufacturing experience, Cosworth’s ■■ Skirt profile & ovality technology - reduces engine noise, increases life & performance intimate knowledge of the interaction ■■ F1 quality forgings - proprietary CosAl 010 for high stress applications between the piston and other engine ■■ Oil and combustion gas control features - reduced blow-by and oil consumption components gives the us the distinct ■■ Offset pin bores - for reduced engine noise advantage in piston design resulting in the finest piston available. Polished Crown The piston is one of the most important components within the engine. It can be subjected to directional change up to 285 times every second and must withstand acceleration forces of 8500 G’s. Cosworth high performance forged pistons are Anti-detonation bands designed and engineered to withstand this type of punishment and still perform. All Cosworth pistons are manufactured Optimised Forging using the same methods as our Formula One pistons and include features such as anti-scuff skirt coating, ultra-strong pins, polished top and patented anti-detonation bands. Additionally, each application uses Xylan Skirt Coating a unique forging to minimize weight and ensure the strongest possible piston.

Subaru EJ25, 9.2:1 Mitsubishi 4G63 Subaru EJ25

16 Forged Pistons

Forged Piston Sets (Includes pistons, pins and circlips - rings not included) Features Include: Part No. Application ■■ Unique forgings for each application Subaru ■■ ‘Xylan’ anti scuff skirt coating 20003674 Subaru WRX STI EJ25 (2.5L) 99.5mm 8.2:1cr ■■ Polished tops (reduces carbon build 20003675 Subaru WRX STI EJ25 (2.5L) 99.75mm 8.2:1cr up and relieves stress) 20003676 Subaru WRX STI EJ25 (2.5L) 100.mm 8.2:1cr ■■ Manufactured from proprietary alloy 20003677 Subaru WRX EJ20 (2.0L) 92.mm 8.0:1cr (CosAl 010) 20003678 Subaru WRX EJ20 (2.0L) 92.5mm 8.0:1cr ■■ Ultra strong pin 20003682 Subaru WRX STI EJ25 (2.6L) 99.5mm 8.2:1cr (For use with 81mm crankshaft) ■■ Patented anti-detonation bands 20003683 Subaru WRX STI EJ25 (2.6L) 99.75mm 8.2:1cr (For use with 81mm crankshaft) 20003684 Subaru WRX STI EJ25 (2.6L) 100.mm 8.2:1cr (For use with 81mm crankshaft) 20004531 Subaru WRX STI EJ25 (2.5L) 99.5mm 9.2:1cr 20004532 Subaru WRX STI EJ25 (2.5L) 99.75mm 9.2:1cr 20004533 Subaru WRX STI EJ25 (2.5L) 100.mm 9.2:1cr 20004534 Subaru WRX STI EJ25 (2.6L) 99.5mm 9.2:1cr (For use with 81mm crankshaft) 20004535 Subaru WRX STI EJ25 (2.6L) 99.75mm 9.2:1cr (For use with 81mm crankshaft) 20004536 Subaru WRX STI EJ25 (2.6L) 100.mm 9.2:1cr (For use with 81mm crankshaft) 20003685 Subaru WRX EJ20 (2.2L) 92.mm 8.5:1cr (For use with 79mm crankshaft) 20003687 Subaru WRX EJ20 (2.2L) 92.5mm 8.5:1cr (For use with 79mm crankshaft) Nissan 20003223 Nissan VQ35 (3.5L) High CR 95.5mm 11.0:1cr 20003225 Nissan VQ35 (3.5L) High CR 96.mm 11.0:1cr 20003679 Nissan VQ35 (3.5L) Low CR 95.5mm 8.8:1cr (Turbo application) 20003681 Nissan VQ35 (3.5L) Low CR 96.mm 8.8:1cr (Turbo application) 20005861 Nissan RB26DETT 86.5mm 8.5:1cr-Stroker 20005862 Nissan RB26DETT 87 mm 8.5:1cr-Stroker 20005863 Nissan RB26DETT 87.5mm 8.5:1cr-Stroker Mitsubishi 20003688 Mitsubishi Evo IV-IX 4G63 (2.0L) 85mm 8.8:1cr 20003690 Mitsubishi Evo IV-IX 4G63 (2.0L) 86mm 8.8:1cr 20003693 Mitsubishi Evo IV-IX 4G63 (2.2L) 86mm 8.8:1cr (For use with 94mm crank) 20005129 Mitsubishi 4B11 (2.0L) 86mm 9.0:1cr 20005130 Mitsubishi 4B11 (2.0L) 86.5mm 9.0:1cr 20005131 Mitsubishi 4B11 (2.0L) 87mm 9.0:1cr 20005856 Mitsubishi 4B11 (2.2L) 86mm 9.0:1cr (For use with 94mm crank) 20005859 Mitsubishi 4B11 (2.2L) 86.5mm 9.0:1cr 20005860 Mitsubishi 4B11 (2.2L) 87mm 9.0:1cr Honda 20005865 Honda K20A 86mm 12:1cr 20005866 Honda K20A 86.25mm 12:1cr 20005867 Honda K20A 86.5mm 12:1cr

Nissan VQ35 High Compression

17 Single Forged Pistons

Single Forged Pistons (Includes pins and circlips)

Part No. Application Subaru 20000897 Subaru WRX STI EJ25 (2.5L) 99.5mm 8.2:1cr 20000898 Subaru WRX STI EJ25 (2.5L) 99.75mm 8.2:1cr 20000899 Subaru WRX STI EJ25 (2.5L) 100.mm 8.2:1cr 20002111 Subaru WRX EJ20 (2.0L) 92.mm 8.0:1cr 20002112 Subaru WRX EJ20 (2.0L) 92.5mm 8.0:1cr 20002431 Subaru WRX STI EJ25 (2.6L) 99.5mm 8.2:1cr (For use with 81mm crankshaft) 20002432 Subaru WRX STI EJ25 (2.6L) 99.75mm 8.2:1cr (For use with 81mm crankshaft) 20002433 Subaru WRX STI EJ25 (2.6L) 100.mm 8.2:1cr (For use with 81mm crankshaft) 20002489 Subaru WRX EJ20 (2.2L) 92.mm 8.5:1cr (For use with 79mm crankshaft) 20002491 Subaru WRX EJ20 (2.2L) 92.5mm 8.5:1cr (For use with 79mm crankshaft) 20004522 Subaru WRX STI EJ25 (2.5L) 99.5mm 9.2:1cr 20004523 Subaru WRX STI EJ25 (2.5L) 99.75mm 9.2:1cr 20004524 Subaru WRX STI EJ25 (2.5L) 100.mm 9.2:1cr 20004528 Subaru WRX STI EJ25 (2.6L) 99.5mm 9.2:1cr (For use with 81mm crankshaft) 20004529 Subaru WRX STI EJ25 (2.6L) 99.75mm 9.2:1cr (For use with 81mm crankshaft) 20004530 Subaru WRX STI EJ25 (2.6L) 100.mm 9.2:1cr (For use with 81mm crankshaft) Nissan 20002036 Nissan VQ35 (3.5L) High CR 95.5mm 11.0:1cr (Left hand bank) 20002038 Nissan VQ35 (3.5L) High CR 96.mm 11.0:1cr (Left hand bank) 20002039 Nissan VQ35 (3.5L) High CR 95.5mm 11.0:1cr (Right hand bank) 20002041 Nissan VQ35 (3.5L) High CR 96.mm 11.0:1cr (Right hand bank) 20002132 Nissan VQ35 (3.5L) Low CR 95.5mm 8.8:1cr (Turbo application) 20002134 Nissan VQ35 (3.5L) Low CR 96.mm 8.8:1cr (Turbo application) 20005791 Nissan RB26DETT 86.5mm 8.5:1cr-Stroker 20005792 Nissan RB26DETT 87 mm 8.5:1cr-Stroker 20005793 Nissan RB26DETT 87.5mm 8.5:1cr-Stroker

18 Single Forged Pistons

Single Forged Pistons (Includes pins and circlips)

Part No. Application Mitsubishi 20000832 Mitsubishi Evo IV-IX 4G63 (2.0L) 85mm 8.8:1cr 20000834 Mitsubishi Evo IV-IX 4G63 (2.0L) 86mm 8.8:1cr 20000971 Mitsubishi Evo IV-IX 4G63 (2.2L) 86mm 8.8:1cr For use with 94mm crank 20004488 Mitsubishi 4B11 (2.0L) 86mm 9.0:1cr 20004675 Mitsubishi 4B11 (2.0L) 86.5mm 9.0:1cr 20004676 Mitsubishi 4B11 (2.0L) 87mm 9.0:1cr 20005783 Mitsubishi 4B11 (2.2L) 86mm 9.0:1cr 20005784 Mitsubishi 4B11 (2.2L) 86.5mm 9.0:1cr 20005785 Mitsubishi 4B11 (2.2L) 87mm 9.0:1cr Honda 20005799 Honda K20A 86mm 12:1cr 20005800 Honda K20A 86.25mm 12:1cr 20005801 Honda K20A 86.5mm 12:1cr

Cosworth Tech: Green Pistons Xylan is a fluorpolymer coating designed for use on various engine components and fasteners. Cosworth pistons use Xylan coating to provide lubrication and control friction, wear resistance, heat resistance, nonstick and release properties and, at the same time, can also protect from corrosion. This is the same coating we use on many of our ultra-high performance race engines.

Spare Piston Pins and Circlips

Cosworth Pistons feature heavy duty, ultra Spare Piston Pins and Circlips utrong piston pins designed for the higher Part No. Application stress and elevated load levels found in PA2674 23mm Pin, Subaru EJ20 / EJ25 Piston high performance engines. Spare parts PA1846 22mm Pin, Mitsubishi 4G63 Piston are available for routine engine rebuilds. PA1251 22mm Pin, Nissan VQ Piston For ease of circlip installation on Subaru PP5433 Circlip, 23mm Subaru EJ20 / EJ25 Piston. 2 req per piston engines, we offer an exclusive installation PP2371 Circlip, 22mm Nissan / Mitsubishi Piston. 2 req per piston tool engineered to simplify the task. This SB8004 Circlip install tool, Subaru high quality tool is machined from steel to ensure years of trouble free use.

19 Performance Ring Sets

Developed using the latest technologies, Performance Ring Sets for Cosworth Pistons and highest quality materials, Cosworth Part No. Application Specification Performance Ring Sets are designed Subaru to meet the demands of modern high 20001515 Subaru WRX STI EJ25 (2.5L) 99.5mm performance engines for higher power 20001516 Subaru WRX STI EJ25 (2.5L) 99.75mm output, improved sealing, lower friction, 20001517 Subaru WRX STI EJ25 (2.5L) 100.mm and longer life. 20005160 Subaru WRX EJ20 (2.0L) 92.mm 20005161 Subaru WRX EJ20 (2.0L) 92.5mm 20003605 Subaru WRX EJ20 (2.0L) 92.mm (Use with Stroker pistons 20002489/ 20003685) 20003607 Subaru WRX EJ20 (2.0L) 92.5mm (Use with Stroker pistons 20002491/ 20003687) Nissan 20001512 Nissan VQ35 (3.5L) 95.5mm 20001514 Nissan VQ35 (3.5L) 96.mm Mitsubishi PR7317 Mitsubishi Evo 4G63 (2.0L) 85mm 20002246 Mitsubishi Evo 4G63/4B11 86mm 20005705 Mitsubishi Evo 4B11 86.5mm 86.5mm 20005706 Mitsubishi Evo 4B11 87mm

Cosworth Tech: Ring Sets Cosworth Performance Ring Sets are comprised of a chrome top ring, an iron second ring, and three-piece oil ring. Some Cosworth Performance Ring Sets offer upper rings that are Gas Nitride treated for quicker break-in, lower wear, and improved sealing. Manufacturing tolerances exceed OEM standards. Axial tolerance is +/- 0.0002” and radial tolerance is +/- 0.0005”.

20 Performance Ring Sets Kevlar High Performance Timing Belts

Cosworth Kevlar High Performance Timing Performance Ring Sets for Cosworth Pistons belts are 300% stronger than original Part No. Application Specification equipment timing belts and are the perfect Subaru compliment when installing Cosworth 20001515 Subaru WRX STI EJ25 (2.5L) 99.5mm camshafts or cylinder heads. 20001516 Subaru WRX STI EJ25 (2.5L) 99.75mm 20001517 Subaru WRX STI EJ25 (2.5L) 100.mm ■■ High saturation HNBR elastomeric 20005160 Subaru WRX EJ20 (2.0L) 92.mm composites ensure durability and heat 20005161 Subaru WRX EJ20 (2.0L) 92.5mm resistance 20003605 Subaru WRX EJ20 (2.0L) 92.mm (Use with Stroker pistons 20002489/ 20003685) ■■ Durable nylon fiber provides extra wear 20003607 Subaru WRX EJ20 (2.0L) 92.5mm (Use with Stroker pistons 20002491/ 20003687) resistance and increased tooth strength Nissan ■■ Kevlar backing improves strength 20001512 Nissan VQ35 (3.5L) 95.5mm 20001514 Nissan VQ35 (3.5L) 96.mm Mitsubishi PR7317 Mitsubishi Evo 4G63 (2.0L) 85mm 20002246 Mitsubishi Evo 4G63/4B11 86mm 20005705 Mitsubishi Evo 4B11 86.5mm 86.5mm 20005706 Mitsubishi Evo 4B11 87mm

Cosworth Kevlar High Performance Timing Belts

Part No. Application 20004950 Timing Belt – Mitsubishi 4G63 Heavy Duty, All 20004952 Balance Belt - Mitsubishi 4G63 Heavy Duty, All 20004953 Timing Belt – Subaru EJ20/25 Heavy Duty, All

21 High Performance Camshafts

Cosworth has been engineering camshafts Performance Camshafts for nearly 50 years. That coupled with years Part No. Application Specification of innovative multi valve cylinder head Subaru design ensures our camshaft designs are Subaru WRX STI EJ25 (2.5L) Set of four Int.”260” deg. 9.6mm lift / Exh. “260” deg. KK3814 the most efficient in providing maximum (AVCS Type) North American spec 9.6mm lift Subaru WRX STI EJ25 (2.5L) Set of four Int.”278” deg. 10.7mm lift / Exh. “274” deg. usable power across the widest power KK3766 (AVCS Type) North American spec S2 Grind 10.mm lift band. KK3765 Subaru WRX EJ20 (2.0L) Set of four “272” deg. 10mm lift Subaru WRX STI EJ25/EJ20 Set of four Int.”278” deg. 10.7mm lift / Exh. “274” deg. Each cam is ground from a new billet and KK3920 (AVCS Type) Japan / European spec S2 Grind 10.mm lift finished using the same procedures we Mitsubishi use in our extreme level race engines. Mitsubishi Evo 4G63 (2.0L) Pr (1 intake and 1 KK3805 “264” deg. 10.2 mm lift Cosworth camshafts are the perfect exhaust cam) M1 Grind Mitsubishi Evo 4G63 (2.0L) Pr (1 intake and 1 compliment to our CNC Ported Big Valve KK3806 “272” deg. 11 mm lift exhaust cam) M2 Grind Cylinder Heads. Our cams are profiled Mitsubishi Evo IX 4G63 (2.0L) Pr (1 intake KK3921 MIVEC Intake/Exhaust “272” deg. 11 mm lift to increase boost response thereby and 1 exhaust cam) M2 Grind increasing engine torque and power and Mitsubishi Evo IX 4G63 (2.0L) Pr (1 intake MIVEC Intake “280” deg. 11.6mm lift / 20002517 and 1 exhaust cam) M3 Grind Exhaust “272” deg. 11 mm lift are fully compatible with our CNC Ported Mitsubishi Evo 4G63 (2.0L) Intake cam only PR7832 “264” deg. 10.2 mm lift Big Valve Cylinder Heads. M1 Grind Mitsubishi Evo 4G63 (2.0L) Exhaust cam only PR7833 “264” deg. 10.2 mm lift M1 Grind Mitsubishi Evo 4G63 (2.0L) Intake cam only PR7834 “272” deg. 11 mm lift M2 Grind Mitsubishi Evo 4G63 (2.0L) Exhaust cam only PR7835 “272” deg. 11 mm lift M2 Grind Nissan Nissan VQ35 “287hp” Set (2 intake and 2 Intake “268” deg. 10.4mm lift / Exhaust 20002507 Exhaust cams) “ZK1” Grind “268” deg. 9.5mm lift Nissan VQ35 “287hp” Set (2 intake and 2 Intake “270” deg. 10.65mm lift / Exhaust 20002508 Exhaust cams) “ZK2” Grind “270” deg. 10.65mm lift Nissan VQ35 “Rev up” Set (2 intake and 2 Intake “268” deg. 10.4mm lift / Exhaust 20002510 Exhaust cams) “ZK1” Grind “268” deg. 9.5mm lift Nissan VQ35 “Rev up” Set (2 intake and 2 Intake “270” deg. 10.65mm lift / Exhaust 20002511 Exhaust cams) “ZK2” Grind “270” deg. 10.65mm lift

Cosworth Tech - Subaru Cams Our Subaru AVCS cams are available for both North American and Japanese/European applications. While cam profiles are the same, cam angle triggers are significantly different. AVCS camshafts for North American applications use a series of three slots to activate the cam angle sensor. Japanese/European applications rely on four raised triggers to activate the sensor. If in doubt, check your original cams before ordering. North American Japanese/European

22 High Performance Camshafts

Features Include: Performance Camshafts ■■ Ground from new billets Part No. Application Specification ■■ Engineered and tested profiles Subaru ■■ Subaru WRX STI EJ25 (2.5L) Set of four Int.”260” deg. 9.6mm lift / Exh. “260” deg. Broad power band KK3814 (AVCS Type) North American spec 9.6mm lift ■■ Compatible with Cosworth CNC ported Subaru WRX STI EJ25 (2.5L) Set of four Int.”278” deg. 10.7mm lift / Exh. “274” deg. KK3766 Big Valve Cylinder Heads (AVCS Type) North American spec S2 Grind 10.mm lift KK3765 Subaru WRX EJ20 (2.0L) Set of four “272” deg. 10mm lift Subaru WRX STI EJ25/EJ20 Set of four Int.”278” deg. 10.7mm lift / Exh. “274” deg. KK3920 (AVCS Type) Japan / European spec S2 Grind 10.mm lift Mitsubishi Mitsubishi Evo 4G63 (2.0L) Pr (1 intake and 1 KK3805 “264” deg. 10.2 mm lift exhaust cam) M1 Grind Mitsubishi Evo 4G63 (2.0L) Pr (1 intake and 1 KK3806 “272” deg. 11 mm lift exhaust cam) M2 Grind Subaru AVCS Mitsubishi Evo IX 4G63 (2.0L) Pr (1 intake KK3921 MIVEC Intake/Exhaust “272” deg. 11 mm lift and 1 exhaust cam) M2 Grind Mitsubishi Evo IX 4G63 (2.0L) Pr (1 intake MIVEC Intake “280” deg. 11.6mm lift / 20002517 and 1 exhaust cam) M3 Grind Exhaust “272” deg. 11 mm lift Mitsubishi Evo 4G63 (2.0L) Intake cam only PR7832 “264” deg. 10.2 mm lift M1 Grind Mitsubishi Evo 4G63 (2.0L) Exhaust cam only PR7833 “264” deg. 10.2 mm lift M1 Grind Mitsubishi Evo 4G63 (2.0L) Intake cam only PR7834 “272” deg. 11 mm lift M2 Grind Mitsubishi Evo 4G63 (2.0L) Exhaust cam only PR7835 “272” deg. 11 mm lift M2 Grind Nissan Nissan VQ35 “287hp” Set (2 intake and 2 Intake “268” deg. 10.4mm lift / Exhaust 20002507 Exhaust cams) “ZK1” Grind “268” deg. 9.5mm lift Nissan VQ35 “287hp” Set (2 intake and 2 Intake “270” deg. 10.65mm lift / Exhaust 20002508 Exhaust cams) “ZK2” Grind “270” deg. 10.65mm lift Nissan VQ35 “Rev up” Set (2 intake and 2 Intake “268” deg. 10.4mm lift / Exhaust 20002510 Exhaust cams) “ZK1” Grind “268” deg. 9.5mm lift Mitsubishi Evo 4G63 Nissan VQ35 “Rev up” Set (2 intake and 2 Intake “270” deg. 10.65mm lift / Exhaust 20002511 Exhaust cams) “ZK2” Grind “270” deg. 10.65mm lift

Mitsubishi EVO 4G63 Mivec

Nissan VQ35

23 High Performance Valve Train

High Performance Valves (2400° F) reliability. Each valve features Large diameter valves are essential swirl polished back for improved air flow for improved air flow. Cosworth high and dished face for additional weight performance intake valves are produced reduction. Cosworth high performance from high quality stainless steel for valves are compatible with Cosworth Ultra maximum durability. Exhaust valves are Race Valve Spring Kits. machined from Inconel for high temperature

Performance Valves

Part No. Application PR7559 Valve, Inlet +1.0mm Subaru EJ25 - Stainless Steel (37.0mm) PR7558 Valve, EX +1.0mm Subaru EJ25 - Inconel (33.0mm) PR7500 Valve, Inlet +1.0mm Mitsubishi 4G63 - Stainless Steel (35.0mm) PR7501 Valve, Ex +1.0mm Mitsubishi 4G63 - Inconel (31.5mm) PR7602 Valve, Inlet +1.0mm Nissan VQ35 - Stainless Steel (38.15mm) PR7603 Valve, Ex +1.0mm Nissan VQ35 - Inconel (32.35mm)

Ultra Race Valve Spring Kits Cosworth Ultra Race Valve Springs are Cosworth Ultra Race Valve Spring Kits wound from the highest quality chrome are engineered for use in situations that silicone steel with chamfered ends and are require valve control in extreme conditions. heat treated and stress relieved for long Each kit consists of dual valve springs with term reliability. Ultra Race Valve Spring matched lightweight titanium retainers, kits are compatible with Cosworth high keepers, and hardened steel spring seats. performance valves.

Ultra-High RPM Valve Spring Sets

Part No. Application KK3813 Mitsubishi Evo 4G63 (2.0L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set KK3839 Subaru EJ25 STI (2.5L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set 20002550 Nissan VQ35 (3.5L) Ultra-High RPM Dual Valve Spring / Titanium Retainer set

24 High Performance Valve Train

High RPM Valve Springs performance potential and improved valve Cosworth High RPM Valve Springs are the control. Single spring design allows easy result of countless hours of engineering, installation with no machining required and is perfect for typical high performance testing and validation ensuring the best *Seal clearance possible spring for high performance use. applications. Cosworth High RPM Valve ■■ Install Height Manufactured from the finest Japanese “F1” Springs are wound from the world’s finest Kobe steel Japanese Kobe steel and feature dual ■■ Single spring design for easy chamfered ends to reduce wear on seats installation and retainers. Each spring has been ■■ Dual chamfered ends engineered with increased seat pressure ■■ Increased performance along with higher lift capability for optimum

High RPM Valve Spring Sets

Part No. Application Mitsubishi 20000164 High RPM Single Valve Spring set (16) Mitsubishi Evo VII-IX 4G63 Subaru 20000166 High RPM Single Valve Spring set (16) Subaru WRX STI EJ25 (2.5L) EJ20 (2.0L) Nissan 20000163 High RPM Single Valve Spring set (24) Nissan VQ35 (3.5L) 20000168 High RPM Single Valve Spring set (16) Nissan SR20DET (2.0L) 20000169 High RPM Single Valve Spring set (24) Nissan RB26 (2.6L) BMW 20000167 High RPM Single Valve Spring set (16) BMW MINI Cooper/Cooper S (1.6L)

Mitsubishi 4G63 Subaru EJ20/EJ25 Nissan VQ35DE

Valve Train Specification(L1=Install Height, F1=Force @ L1, L2=Max Lift, F2=Force @ Max Lift)

Part No. Application Free Height L1 mm F1 N F1 lbs L2 mm F2 N F2 lbs Max Lift Coil Bind 20000167 Mini 1.6 Tritec 48.85 43.0 348 80 33.0 944 212 11.0 30.7 20000164 Mitsubishi EVO 7-9 47.00 38.1 381 85 26.1 900 202 12.0 24.3 20000169 Nissan RB26 49.30 41.9 359 81 29.9 941 212 12.0 28.4 20000168 Nissan SR20 46.00 39.0 365 82 27.5 964 217 11.5 25.4 20000163 Nissan VQ35DE 46.00 38.0 289 65 24.5 775 175 13.5 22.9 20000166 Subaru EJ 2.0/2.5 42.00 36.0 275 62 25.0 780 175 11.0 23.2 KK3813 Mitsubishi EVO 7-9 50.00 38.1 512 115 26.9 1268 285 12.0 25.7 20002550 Nissan VQ35DE 47.00 38.0 378 85 23.9 1183 266 14.1 22.6 KK3829 Subaru EJ 2.0/2.5 46.10 36.0 356 80 22.1 1019 229 13.9 20.8

All dimensions are in millimetres unless otherwise specified

25 High Performance Head Gaskets

Cosworth High Performance Head Gaskets are engineered to seal in power under the most demanding conditions. Constructed from stainless steel with a folded stopper layer, each application features superior sealing compared to conventional multi- layer steel gaskets. Additionally, Cosworth High Performance Head Gaskets are manufactured from pre-coated die cut Without folded stopper layer, clamping force is Folded stopper layer provides complete sealing stainless steel resulting in uniform coating limited resulting in incomplete sealing around around entire combustion chamber distribution and consistent shape. combustion chamber

High Performance Head Gaskets

Part No. Application Specification Nissan 20000900 Nissan VQ35DE (3.5L) Bore = 96mm T ~ 0.6mm (Pair) 20000903 Nissan VQ35DE (3.5L) Bore = 98mm T ~ 0.6mm (Pair) 20000924 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.1mm 20000925 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.5mm 20000926 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.8mm 20000927 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.5mm 20000928 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.5mm 20000929 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.8mm 20000930 Nissan RB25DET (2.5L) Bore = 87mm T ~ 1.1mm 20000931 Nissan RB25DET (2.5L) Bore = 87mm T ~ 1.5mm Mitsubishi 20001689 Mitsubishi Evo IX 4G63 (2.0L) Bore = 86mm T ~ 1.3mm 20001690 Mitsubishi Evo IX 4G63 (2.0L) Bore = 86mm T ~ 1.5mm 20000909 Mitsubishi Evo IV-VIII 4G63 (2.0L) Bore = 86mm T ~ 1.3mm 20000910 Mitsubishi Evo IV-VIII 4G63 (2.0L) Bore = 86mm T ~ 1.5mm 20004122 Mitsubishi Evo X 4B11T (2.0L) Bore = 87mm T ~ 1.1mm 20004123 Mitsubishi Evo X 4B11T (2.0L) Bore = 87mm T ~ 1.3mm Subaru 20000913 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 0.78mm each 20000916 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 1.1mm each 20002145 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 1.5mm each 20000919 Subaru WRX EJ20 (2.0L) Bore = 93mm T ~ 0.78mm each 20000922 Subaru WRX EJ20 (2.0L) Bore = 93mm T ~ 1.1mm each Honda 20003127 Honda K20/24 Bore = 87mm T ~ 0.8mm for use with RAA, RAC, RBB, and RBC cylinder heads 20003128 Honda K20/24 Bore = 87mm T ~ 1.1mm for use with RAA, RAC, RBB, and RBC cylinder heads 20003129 Honda K20/24 Bore = 90mm T ~ 1.1mm for use with RAA, RAC, RBB, and RBC cylinder heads 20005454 Honda K20/24 Bore = 87mm T ~ 0.8mm for use with PRB, PNC, and PPA cylinder heads 20005455 Honda K20/24 Bore = 87mm T ~ 1.1mm for use with PRB, PNC, and PPA cylinder heads 20005456 Honda K20/24 Bore = 90mm T ~ 1.1mm for use with PRB, PNC, and PPA cylinder heads

26 High Performance Head Gaskets

Each gasket is carefully engineered with ■■ Die cut manufacturing process ensures the following features: smooth edges, unlike laser cut gaskets ■■ Cosworth gaskets feature a “folded ■■ Individual die cut layers of stainless stopper” layer for additional clamping steel with superior consistency force around each cylinder. The width compared to laser cut gaskets of sealing area is specific for each ■■ Pre-coated stainless steel with a 0.25 application thereby providing ultimate micron layer of nitrile rubber ensures sealing properties consistent distribution of coating with ■■ Available in a range of thicknesses for no high or low areas specific applications ■■ Manufacturing dimensional tolerance of +/- 0.001” Stopper Sealing Layer

High Performance Head Gaskets Gasket Layer Part No. Application Specification Folded Nissan Stopper Layer 20000900 Nissan VQ35DE (3.5L) Bore = 96mm T ~ 0.6mm (Pair) 20000903 Nissan VQ35DE (3.5L) Bore = 98mm T ~ 0.6mm (Pair) Gasket Layer 20000924 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.1mm 20000925 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.5mm 20000926 Nissan SR20DET (2.0L) Bore = 87mm T ~ 1.8mm 20000927 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.5mm 20000928 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.5mm 20000929 Nissan RB26DETT (2.6L) Bore = 87mm T ~ 1.8mm Nissan VQ35DE 20000930 Nissan RB25DET (2.5L) Bore = 87mm T ~ 1.1mm 20000931 Nissan RB25DET (2.5L) Bore = 87mm T ~ 1.5mm Mitsubishi Uniform Nitrile Rubber Coating 20001689 Mitsubishi Evo IX 4G63 (2.0L) Bore = 86mm T ~ 1.3mm 20001690 Mitsubishi Evo IX 4G63 (2.0L) Bore = 86mm T ~ 1.5mm 20000909 Mitsubishi Evo IV-VIII 4G63 (2.0L) Bore = 86mm T ~ 1.3mm Mitsubishi 4G63 20000910 Mitsubishi Evo IV-VIII 4G63 (2.0L) Bore = 86mm T ~ 1.5mm 20004122 Mitsubishi Evo X 4B11T (2.0L) Bore = 87mm T ~ 1.1mm 20004123 Mitsubishi Evo X 4B11T (2.0L) Bore = 87mm T ~ 1.3mm Subaru 20000913 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 0.78mm each 20000916 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 1.1mm each Mitsubishi 4b11t 20002145 Subaru WRX STI EJ25 (2.5L) Bore = 101mm T ~ 1.5mm each 20000919 Subaru WRX EJ20 (2.0L) Bore = 93mm T ~ 0.78mm each 20000922 Subaru WRX EJ20 (2.0L) Bore = 93mm T ~ 1.1mm each Honda 20003127 Honda K20/24 Bore = 87mm T ~ 0.8mm for use with RAA, RAC, RBB, and RBC cylinder heads 20003128 Honda K20/24 Bore = 87mm T ~ 1.1mm for use with RAA, RAC, RBB, and RBC cylinder heads 20003129 Honda K20/24 Bore = 90mm T ~ 1.1mm for use with RAA, RAC, RBB, and RBC cylinder heads 20005454 Honda K20/24 Bore = 87mm T ~ 0.8mm for use with PRB, PNC, and PPA cylinder heads 20005455 Honda K20/24 Bore = 87mm T ~ 1.1mm for use with PRB, PNC, and PPA cylinder heads 20005456 Honda K20/24 Bore = 90mm T ~ 1.1mm for use with PRB, PNC, and PPA cylinder heads Die Cut Edges

Subaru EJ25

27 Oil Control

High performance engines reject a Oil Control substantial amount of heat through the Part No. Application oil system. Maintaining oil pressure and Subaru control along with an increase in actual KK3928 Subaru (EJ20/EJ25) Blueprinted Oil Pump with high pressure mod & install kit volume will help dissipate heat and stabilize 20001185 Subaru (EJ20/EJ25) High Volume/Pressure Blueprinted Oil Pump & install kit oil temperatures. Cosworth oil control 20001238 Subaru (EJ20/EJ25) High Volume Oil Pan components are engineered to combat 20002499 Subaru (EJ20/EJ25) Oil Control Baffle several problem areas experienced in high 20004463 Dry Sump Kit, Subaru EJ performance engines. Mitsubishi 20001382 Mitsubishi Evo VII-IX 4G63 (2.0L) Crankshaft Oil Scraper

Mitsubishi 4G63 Crankscraper The Cosworth 4G63 Crankscraper is engineered to reduce parasitic drag on the crankshaft caused by oil accumulation that surrounds the crankshaft during rotation. This oil buildup causes additional drag and can reduce power output. Additionally, overall oil control is improved by keeping oil in the sump. Especially useful in high rpm and race applications. Mounts to main bearing girdle. Designed from 2.6 mm (12gauge) steel plate and includes required mounting hardware.

Subaru Oil Pan Baffle Oil control can be a problem with high performance and high revving Subaru engines. High crankcase pressure along with the horizontal engine platform restricts rapid oil return from the cylinder heads to the oil pan. Pressure builds in the heads and crankcase causing massive blow by and power loss. The Cosworth Subaru Oil Pan Baffle has been engineered with diverters to control oil returning from the cylinder heads to the pan directing it away from the crankshaft. Additionally, one-way valves prevent oil from re-entering the upper crankcase chamber thereby limiting blow by and preventing oil starvation during hard driving. Manufactured from stainless steel and installs easily between the block and oil pan on both EJ20/EJ25 series engines. Use with our High Volume Oil Pan for maximum oil control.

28 Oil Control

Subaru Dry Sump - Part number Complete crankcase oil scavenging The Cosworth Dry Sump System for the Oil Control 20004463 reduces excessive and residual oil that can Subaru EJ20/EJ25 replaces the original Part No. Application cause blow-by and power loss. A Dry Sump oil sump with a machined from solid, low Subaru A must for racing and high performance also offers more consistent oil pressure profile alloy pan with twin scavenge ports, KK3928 Subaru (EJ20/EJ25) Blueprinted Oil Pump with high pressure mod & install kit use, dry Sump oiling systems offer an 20001185 Subaru (EJ20/EJ25) High Volume/Pressure Blueprinted Oil Pump & install kit unparalleled level of safety and reliability to the engine, improved scavenging, and internal baffling and o-ring sealing. A two 20001238 Subaru (EJ20/EJ25) High Volume Oil Pan compared to factory Wet Sump systems. increased ring seal due to greater pan stage scavenge pump driven by a HTD 20002499 Subaru (EJ20/EJ25) Oil Control Baffle vacuum. belt, mounted to a heavy duty bracket 20004463 Dry Sump Kit, Subaru EJ evacuates the oil from the engine. Mitsubishi 20001382 Mitsubishi Evo VII-IX 4G63 (2.0L) Crankshaft Oil Scraper Includes: ■■ Machined From Solid Sump ■■ 2-Stage Scavenge Pump ■■ Pump Mounting Bracket/Manifold ■■ 34T Pump Drive Pulley ■■ Crankshaft Drive Adapter Assembly ■■ Internal baffling HTD Drive Belt ■■ Crankcase Breather Filter and Fitting ■■ Fittings and Hardware

Required to complete the installation: ■■ Oil Tank ■■ Hoses/Hose Ends ■■ 2004-2007 Subaru STI Alternator bracket ■■ Cosworth High Volume/Pressure Oil Twin Scavenge Ports Pump 20001185

Heavy duty mounting bracket / pump manifold

Low profile design

29 Subaru EJ20/25 High Volume Oil Pan - fabricated from both custom and original Part number 20001238 components resulting in an additional 2qts Sustained high RPM or prolonged high oil capacity when compared to standard speed driving will result in elevated oil oil pan. Each kit includes powder coated temperatures. Additional oil volume along oil pan, mounting hardware, oil pickup and with improved oil control will reduce spacer. Will not work with some equal damaging oil temperatures. The Cosworth length exhaust manifolds. EJ20/EJ25 High Volume Oil Pan is

Subaru EJ20/25 Oil pump - High Additionally, sustained High RPM use may 12mm rotor to increase volume by 20%. Volume - Part number 20001185 cause oil starvation at the rod and main Suggested applications include drag, track Increasing oil volume will help to prevent bearings. The Cosworth High Volume day and race use. Each kit includes all bearing damage and engine failure. Subaru EJ20/EJ25 series oil pump required mounting hardware and seals. utilizes a completely new inner and outer

Pump Gear: 10mm vs 12mm

Subaru EJ20/25 Oil pump - High increase oil pressure helping to ensure Pressure - Part number KK3928 superior lubrication. Each pump is carefully High performance engines require inspected and de-burred for unobstructed additional oil pressure because of the oil flow. Perfect for high performance daily increased demand placed upon various use Each kit includes all required mounting components within the engine. The hardware and seals. Cosworth High Pressure Subaru EJ20/ EJ25 series oil pump is modified to

30 High Flow Synthetic Air Filters

Cosworth Performance Air Filters are constructed from a proprietary synthetic, non-woven single layer, pleated polyester filter media that requires no oiling. For an OE like fit, the filter housing is injection molded from High Impact Polystyrene or Polypropylene. Each Cosworth air filter has been engineered to fit the vehicles original air box providing a true cold air supply to the engine. Cosworth Performance Air Filters also provide increased air flow when compared to original equipment air filters.

High Flow Synthetic Air Filters

Part No. Application Honda Fit 20002270 Nissan 350Z -06 20005381 Nissan 350Z Nismo / Infiniti G37 07+(Twin Air Box Applications) 20002271 Honda S2000 20002272 Honda Fit 20005380 Acura RSX 02-07 20002274 Mazda 3 2.0, 2.3L petrol, Mazdaspeed 3 20002273 Mazda RX8 03+ 20002275 Mazda MX-5 Miata/Roadster 2.0L all 2005+ 20002277 Mitsubishi Lancer Evolution 7/8/9

20004232 Mitsubishi Lancer Evolution X 2008+ Mitsubishi Evo 8/9 20002270 Subaru Impreza GC, GD, GG 20002278 Subaru Legacy GT N/A and Turbo, 08+ Sti 20002281 Lexus IS250/350 20002286 Toyota Tundra 3.4L and 4.7L all 20002282 Scion tC 20002282 Lotus Elise & Exige

■■ Improved performance ■■ Superior filtration

■■ Exceptional dust holding capacity Nissan 350Z / Subaru Impreza ■■ Reduced restriction (10%+ compared to OE filters) ■■ Over 98% efficiency (ISO5011:200 Fine Dust Test)

Subaru Legacy 2008+ STI Mazda 3

Honda S2000 Lexus IS250/350 Toyota Tundra

31 Mazda MX5 Supercharger system 2006-2008

The Cosworth bolt on Supercharger system The all inclusive, bolt-on system features an ■■ Eaton MP62 Supercharger unit for the 2006+ Mazda MX-5 features a efficient air to water intercooler, upgraded ■■ Intercooler (Air to water) state of the art 4th generation Eaton MP62 fuel system and complete installation ■■ High flow injectors rotating group housed in an integral inlet hardware. A high flow air box cover and ■■ High flow air box lid manifold. It was designed as a compact, a revised accessory drive arrangement ■■ Compact installation flexible supercharger system for increased complete the major components list. An power with original equipment quietness included re-flashing device takes care of and reliability without adversely affecting fuel and ignition calibration. fuel economy. The MP62 has proven itself in a number of OE applications.

Mazda MX5 Supercharger 2006+ HP/Torque

245

235

225

215

205

195

185

175

165

155

145

135

125

115 HP Torque 105

95 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 RPM

32 Mazda MX5 Supercharger system 2006-2008

Mazda MX5 Supercharger

Part No. Application 20001310 Mazda MX5 / Miata 2006+ Manual transmission

Flashing Kit

33 Induction / Fuel

VQ35 Twin Plenum Intake Manifold enhancing velocity stacks improve mid- lightweight aluminium alloy with carbon The Cosworth Twin Plenum Inlet Manifold range power. With performance derived fibre end caps and includes all required for the Nissan VQ35DE has been designed from countless hours of development mounting hardware. Will fit with original to enhance mid-range and high RPM power. including computational fluid dynamics, strut tower brace. Can be used with the It features increased plenum volume for the Cosworth Twin Plenum Inlet Manifold factory fuel rail system or the Cosworth improved high RPM power while torque is perfect for both normally aspirated and High Volume Fuel Rail kit. forced induction applications. Cast from

Mitsubishi EVO High Volume Fuel Rail Nissan VQ35 High Volume Fuel Rail Each system includes sleeved high System System pressure fuel lines along with a CNC The Cosworth High Volume Fuel Kit The original factory VQ35DE fuel rail machined distribution block that includes features a machined from solid, hard arrangement is limited in performance. an additional port for various sensors. anodized aluminium fuel rail with o-ringed The Cosworth VQ35 High Volume Fuel The Cosworth High Volume Fuel Rail fittings and a pre-shaped inlet pipe. The System features high volume anodized System can be used with original or Cosworth High Volume Fuel Rail Kit can fuel rails, with o-ringed fittings and is fully various aftermarket injectors. be used with original or various aftermarket configurable for various applications. injectors and PRV’s. ■■ Direct fit replacement- includes all necessary components for a complete bolt-on installation ■■ Designed with expansion in mind, facilitating installation of custom fuel systems including AN fuel lines and remote mounted fuel pressure regulators ■■ Full-flow ½” bore will support upwards of 600hp worth of fuelling ■■ Hard anodized finish is methanol compatible. VQ35 Fuel Rail System (upgraded fittings and seals required)

Mitsubishi Evo Fuel Rail System

34 Induction / Fuel

Induction / Fuel

Part No. Application Nissan 20000063 Nissan VQ35DE (3.5L) Twin Plenum Intake Manifold W Carbon plenum covers Nissan VQ35DE (3.5L) Twin Plenum Intake Manifold W Carbon plenum covers "Bright Polish 20005779 Finish" KK3905 Nissan VQ35DE (3.5L) High Volume Fuel rail kit Mitsubishi 20005241 Mitsubishi EVO X High Volume Fuel rail kit Subaru 20005378 Subaru Intercooler Kit, 2008 STI 20006438 Subaru High Volume Inlet Manifold

Subaru Air Intake - Part number for power. Engineered for easy installation 20006438 and is the key to making big power. The Cosworth Subaru High Volume Inlet ■■ Substantially increased plenum volume Manifold is cast from aluminium featuring ■■ Large, tapered runners with radiused large tapered runners with radiused inlets inlets for improved air flow. Plenum volume has ■■ Tuned plenum volume and runner been substantially increased and tuned length/taper ■■ Over 10% increase in flow ■■ Integral vacuum manifold for connection of brake booster, boost gauge, MAP sensor, boost controller, etc. ■■ Will work with standard or forward mount throttle body configurations ■■ Stock throttle body location for compatibility with most aftermarket FMIC kits

35 Subaru Intercooler System

Front mount Intercooler System 2008+ large aluminium core with mandrel Features STI - Part Number 20005378 bent aluminium tubing for maximum ■■ Large efficient core available in Front mounted intercoolers offer performance up to and exceeding 600hp. anodized black finish for subtle appearance improved performance potential for The intercooler core is rubber mounted on ■■ Large diameter mandrel bent Subaru applications. The Cosworth front a secure bracket system to help eliminate aluminium tubing with grey powder mount intercooler for the 2008+ Subaru cracking and breakage. coated finish STI replaces the restrictive, heat-soak Installation is simplified as no cutting of ■■ 4-ply heavy duty silicone coupling prone original top mounted core. The vehicle is required hoses engineered system features an efficient ■■ Isolated mounting system ■■ Liner hose clamps

CAD Assembly Heavy duty mounting system

Large efficient intercooler core

Large diameter aluminium tubing

36 Subaru Intercooler System NGK High Performance Spark Plugs

NGK High Performance Spark Plugs in different heat ranges to suit a variety of are designed to withstand the severe applications. mechanical and thermal shock associated with high revving, high-compression, and high boost engines. They feature a fine Iridium tip, which ensures high durability, and a consistently stable spark. Iridium alloy also has an extremely high melting point, perfect for today’s high-tech, high performance engines. They also feature Trivalent Metal Plating, which offers superior anti-corrosion and anti-seizing properties. Highly recommended for use in high-powered engines with increased compression ratios, and/or higher combustion chamber pressures. Available

NGK High Performance Spark Plugs

Part No. Application Specification 20005759 NGK R7438-8 VQ, 4B11T, EJ257, and 4G EVO9 Heat Range 8 20005760 NGK R7438-9 VQ, 4B11T, EJ257, and 4G EVO9 Heat Range 9 20005761 NGK TR7IX Duratec Heat Range 7 20005762 NGK TR8IX Duratec Heat Range 8

37 Miscellaneous

Subaru Billet Timing Belt Guide - Part number SB0001 The original sheet metal timing belt guide can flex from belt deflection when subjected to extreme RPM causing the timing belt to skip one or more teeth on the crankshaft sprocket. The Cosworth Billet Timing Belt Guide was developed to control this problem and is machined from solid aluminium with a hard anodized finish. Includes mounting hardware.

Miscellaneous

Part No. Application Subaru SB0001 Subaru (EJ20/EJ25) Billet Timing Belt Guide SB0002 Subaru Billet Cam Angle Sensor Bracket (for mounting cam angle sensor on front of head) 20004539 Subaru (EJ20/EJ25) Air pump delete plate set

Subaru Billet Cam Angle Sensor Bracket - Part number SB0002 Used for mounting the cam angle sensor to the front of non North American Spec STI cylinder heads. Useful for adapting our cylinder heads to Japanese and European market engines.

Air Pump Delete - Part number 20004539 Used to eliminate the air pump and related valves found on 2006-2008 Subaru Engines. Used for high performance applications or adapting later cylinder heads to early engines. Seals off the air injection ports at the cylinder heads. Saves weight, reduces complexity, cleans up engine compartment. Machined from solid aluminium with a “Cosworth blue” anodized finish. Mounting hardware included.

38 Miscellaneous Disclaimer

The products in this catalogue require professional installation to ensure correct operation. Cosworth will not accept responsibility for damage to vehicles as a result of improper installation of our products.

The performance and power gained from installing products from this catalogue may place vehicles within an “off road use only” category in certain counties and states around the world. Cosworth will not accept responsibility for any restrictions placed on vehicles.

Product Disclaimer: A vehicle modified with Cosworth competition and or racing performance products will not meet the legal requirements for operation on public roads and highways. It is the purchaser’s responsibility to check and comply with all local, state and federal laws prior to operating vehicle. Installation and use of performance products may also affect/ void vehicle warranty and insurance policy.

Warranty: In general, Cosworth Performance Parts carry no warranty. Cosworth Ltd and Cosworth LLC shall not be liable for direct, indirect, incidental or consequential damage or injury to persons or property that might be claimed as a result from the installation, improper installation and failure of part including claims for delay, loss of profits or labour. There are no warranties expressed or implied.

SOME PRODUCTS MAY NOT BE LEGAL FOR SALE OR USE ON POLLUTION CONTROLLED MOTOR VEHICLES OPERATING IN THE STATE OF CALIFORNIA

UK Office US Office Cosworth Ltd The Octagon Cosworth LLC St James Mill Road 3031 Fujita Street Northampton Torrance NN5 5RA CA 90505 United Kingdom USA

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