Dorman's replacement Coolant Tank Cap for Kenworth and Peterbilt trucks is constructed of high-quality plastic. They effectively protect the cooling system by providing a tight seal against the elements. Save time, money and labor by replacing only the Cap—instead of the entire Engine Coolant Recovery Tank. 

• Includes: One (1) Coolant Tank Cap
• Direct replacement for a proper fit every time
• A necessary safety item—prevents coolant from splashing and/or leaking
• Warranty

Application Summary: Peterbilt (2010-08) Models; 335, 337, 340, 348, 349, 352, 353, 357, 359, 362, 365, 367, 372, 375, 376, 377, 378, 379, 384, 385, 386, 387, 388, 389, Kenworth (2010-08) Models; T660, T800, W900