September 21, 2004, Bellevue, Washington – PACCAR Inc’s board of directors today declared a quarterly cash dividend in the amount of twenty cents ($.20) per share, payable December 6, 2004, to stockholders of record at the close of business on November 18, 2004, according to Mark C. Pigott, PACCAR chairman and chief executive officer.

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, DAF and Foden nameplates. It also provides financial services and distributes truck parts related to its principal business. In addition, the Bellevue, Washington-based company manufactures winches under the Braden, Gearmatic and Carco nameplates.

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