PACCAR Inc PACR Public Affairs Department P.O. Box 1518 Press Release Bellevue, WA 98009

Contact: Ken Hastings (425) 468-7530

FOR IMMEDIATE RELEASE

PACCAR Recognizes Top Performing Suppliers in North America

November 19, 2015, Bellevue, Washington – PACCAR (Nasdaq:PCAR) annually recognizes the top performing suppliers in its Supplier Performance Management (SPM) Program. The SPM program evaluates a supplier’s performance in the areas of product development, operations support and business alignment with PACCAR objectives.

“Quality, Technology and Innovation are cornerstones of PACCAR’s success that enable the company to deliver outstanding products and services to our customers worldwide. Our suppliers play a critical role in each of these areas,” said Bill Jackson, PACCAR Vice President, Global Purchasing. Through the SPM Program, Supplier and PACCAR cross-functional teams collaborate to identify performance enhancements and to develop product innovations. “We appreciate the value created for PACCAR customers through the long term relationships we have with our suppliers. We are pleased to recognize and honor our top suppliers that reached the SPM Leader and Achiever Status, the top quartile of PACCAR supplier performance” said Jackson. For 2015, Rago and Sons, Inc., of Oakland, California achieved the highest SPM score and the leader designation.

The 2015 SPM Achievers are: • Bridgestone Manufacturing Company • OPTIMAS OE Solutions LLC • Consolidated Metco (Casting • Pana Pacific Division) • PKC Cable & Harness Assembly • East Penn Manufacturing • SAPA Group • Eaton Corporation (Transmissions) • Superior Trim • Flexfab LLC • Trelleborg Automotive • Leoni Wiring Systems • NIC Global • Michelin North America, Inc • Voss Automotive

“We work closely with all of our suppliers to produce the highest quality products in the industry. We appreciate the focus from our SPM Achiever Suppliers in attaining that performance level in 2015, and in particular, Rago and Son for becoming an SPM Leader,” said Bob Christensen, PACCAR President and CFO.

PACCAR is a global technology leader in the design, manufacture and customer support of high- quality light-, medium-, and heavy-duty trucks under the Kenworth, Peterbilt and DAF nameplates. PACCAR also designs and manufactures advanced diesel engines, provides financial services and information technology, and distributes truck parts related to its principal business.

PACCAR shares are listed on Nasdaq Global Select Market, symbol PCAR. Its homepage is www.paccar.com. # # #