July 10, 2007, Bellevue, Washington – PACCAR’s Board of Directors declared a quarterly cash dividend in the amount of twenty-five cents ($.25) per share, payable on September 5, 2007, to shareholders of record at the close of business on August 17, 2007.

The groundbreaking ceremony for PACCAR’s recently announced $400 million engine manufacturing and technology facility in Columbus, Mississippi will be on July 17. “The 12.9L and 9.2L engines produced at the Mississippi plant will be PACCAR’s most fuel-efficient and highest-technology diesel engines,” said Jim Cardillo, executive vice president. “PACCAR is excited about this superb site and the opportunities it provides to PACCAR, our customers, dealers, supplier partners and the people of the State of Mississippi.”

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 aftermarket support for its customers worldwide.

PACCAR shares are traded on the Nasdaq Global Select market, symbol PCAR, and its homepage is www.paccar.com.