This diesel exhaust fluid (DEF) filler cap is designed to match the fit and function of the original cap on specified vehicles, and is engineered for durability and reliable performance.

Heavy Duty DEF Cap 904-5401CD Features:

• Fits 2010-2021 Kenworth; 2010-2022 Peterbilt
• Direct replacement — this diesel exhaust fluid (DEF) filler cap is designed to match the fit and function of the original cap on specified vehicles
• Restores functionality — reliable replacement for an original cap that is leaking or failed due to wear
• Durable construction — this part is made from quality materials to ensure reliable performance and long service life
• Trustworthy quality — backed by team of product experts in the United States and more than a century of automotive experience