Dorman 80986 Engine Oil Filler Cap

Dorman 80986 Engine Oil Filler Cap

Dorman 80986 is an engine oil filler cap built to match the fit and function of the original cap on specified vehicles. It uses a black nylon construction with an oil-resistant finish for dependable sealing and everyday engine-bay durability.

Key Features

• Twist-lock oil cap design for secure engagement
• Black nylon construction for durable service
• Oil-resistant material helps withstand engine oil exposure
• Direct-fit replacement for specified Chevrolet, GMC, and Hummer applications
• Designed to match original cap fit and function
• Part number 80986 for easy identification

Detailed Description

This Dorman engine oil filler cap is engineered as a direct replacement for the factory cap used on select Chevrolet Express 2500, Chevrolet Silverado 2500 HD, GMC Savana 3500, GMC Sierra 2500 HD, and related applications. The twist-lock style helps provide a secure fit, while the nylon body and oil-resistant construction support reliable performance in the engine compartment. With a 2.36-inch diameter and 1.18-inch height, Dorman 80986 is built to match the original cap’s fitment profile for the listed vehicles.

This part cross-references Anchor 10099 for the same application.

What It Helps Solve

• Broken or cracked oil filler cap
• Loose cap that does not seal properly
• Oil vapor or residue around the filler opening
• Missing cap after service work
• Incorrect cap fit on specified Chevrolet, GMC, or Hummer engines

Installation Notes and Tips

Compatible With 2004-2010 Chevrolet Silverado 2500 HD, N/A; 2004-2006 Chevrolet Silverado 3500, N/A; 2006-2010 Chevrolet Express 2500, N/A; 2006-2010 Chevrolet Express 3500, N/A; 2007-2010 Chevrolet Silverado 3500 HD, N/A; 2007 Chevrolet Silverado 2500 HD Classic, N/A; 2007 Chevrolet Silverado 3500 Classic, N/A; 2004-2010 GMC Sierra 2500 HD, N/A; 2004-2006 GMC Sierra 3500, N/A; 2006-2010 GMC Savana 2500, N/A; 2006-2010 GMC Savana 3500, N/A; 2007-2010 GMC Sierra 3500 HD, N/A; 2007 GMC Sierra 2500 HD Classic, N/A; 2007 GMC Sierra 3500 Classic, N/A; and 2006 Hummer H1, N/A. Verify the twist-lock style and cap diameter against the original part before installation. Ensure the filler neck is clean and the cap seats fully before returning the vehicle to service.

Quality Assurance

Dorman designs replacement hardware to match original fit and function on specified vehicles. Part number 80986 is built for durable, oil-resistant service in the applications listed above.