PACCAR Highlighted as a Leading U.S. Manufacturer

June 1, 2006, Bellevue, Washington PACCAR Inc has again earned the distinction of being selected by Industry Week magazine as one of the 50 best manufacturing companies in the United States.  It is an honor for PACCAR to be recognized with other leading companies including Chevron, Qualcomm, Dell, Nucor and McGraw-Hill, said Mark C. Pigott, chairman and chief executive officer.  This wonderful recognition reflects the dedication and talent of PACCARs 22,000 employees worldwide and confirms the companys quality approach to technology, innovation and shareholder return.

To select the top 50 manufacturing companies, Industry Week magazine evaluated a companys three-year performance measures including revenue growth, profit margin, asset turnover, inventory turns, return on assets and return on equity.  Performance for the most recent year was weighted more heavily in the analysis.  PACCAR delivered record net income of $1.13 billion on revenues of $14 billion in 2005.

PACCARs balanced global diversification has been integral to the companys steady revenue and profit growth, noted Mike Tembreull, vice chairman.  During 2005, approximately 50 percent of PACCARs revenues were generated outside the United States.  Over the past decade, PACCARs earnings per share have grown by 16.3 percent per annum versus 7.5 percent for the S&P 500.  PACCARs return on equity has averaged 26.1 percent during the last three years and was 30.1 percent for 2005.

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.  It also provides financial services and information technology and distributes truck parts related to its principal business.

PACCAR shares are traded on the Nasdaq Stock Market, symbol PCAR, and its homepage can be found at www.paccar.com.