Dorman 904-5201 Heavy Duty Diesel Exhaust Fluid DEF Filler Cap

The Dorman 904-5201 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. This DEF filler cap effectively prevents diesel exhaust fluid from leaking or spilling through the filler neck, helping to keep pollutants out of the environment and restoring the diesel emissions fluid system to proper operation.

Key Features:

• Direct replacement designed to match the fit and function of the original cap on specified vehicles
• Restores functionality as a reliable replacement for an original cap that is leaking or failed due to wear
• Constructed from high-quality, heat-resistant materials for a long service life
• Includes retention ring to ensure a secure fit
• Vehicle try-on testing and vibration testing conducted to ensure trouble-free performance
• Blue plastic construction with specific fit design
• A necessary replacement item for passing inspection in certain states

Backed by a team of product experts in the United States and more than a century of automotive experience, this Dorman DEF cap provides a quality aftermarket solution for heavy-duty diesel vehicles requiring DEF system maintenance.