Replacement Engine Coolant Recovery Tank Cap for Peterbilt, Freightliner and Mack applications. See application summary and cross reference below. 

• Includes: One (1) Cap
• Color: Black
• Diameter: 57.9MM
• Warranty

Application Summary: Peterbilt 357 (2007-89), Peterbilt 375 (2000-89), Peterbilt 377 (2007-89), Peterbilt 379 (2007-89); Freightliner, Mack