Gates 31281 Engine Oil Filler Cap

Gates 31281 Oil Filler Cap

The Gates 31281 oil filler cap is an OE exact replacement built for a secure seal and dependable service on a wide range of Mercedes-Benz, Audi, Volkswagen, and related applications. It uses a twist-lock design with an included gasket or seal to help maintain proper closure at the engine oil fill opening.

Key Features

• OE Exact replacement for direct-fit service
• Twist-lock cam type for secure engagement
• Constructed from plastic, metal, and rubber for durability
• Black finish for a factory-style appearance
• Gasket or seal included for a tighter seal at the filler neck
• Dimensions: 2.5 in. width, 2.55 in. shell diameter, 1.28 in. height
• Neck depth: 1.16 in.; neck diameter: 1.51 in.

Product Details

Gates Oil Filler Caps are made with impact-resistant plastic or heavy-gauge metal construction to support long service life in demanding engine bay conditions. Part number 31281 is engineered as an OE-style oil cap replacement for vehicles that require a twist-lock filler cap, including many Mercedes-Benz C-Class, E-Class, GLK, ML, SLK, Sprinter, and Audi A4/A5/Q5 applications. This part cross-references Dorman - HELP 80988 and URO 06C103485N for the same application.

Common Problems This Part Can Address

• Loose or missing oil filler cap
• Oil vapor escape from a worn seal
• Improper closure at the engine oil fill neck
• Cracked, brittle, or damaged cap material
• Factory-style replacement needs during routine maintenance

Installation Notes and Tips

Verify the filler neck diameter, shell diameter, and twist-lock style before installation. Clean the oil fill opening and inspect the sealing surface for debris or damage before seating the cap. Confirm vehicle-specific fitment for your Mercedes-Benz Sprinter, C300, or Audi A4 application using the year and model listed in the fitment data.

Quality Assurance

Gates specifies top-quality construction using impact-resistant plastic or heavy-gauge metal to support long service life. The 31281 is listed as OE exact, with an included gasket or seal for factory-style fit and function.