Dorman 90202 Engine Oil Filler Cap

Engine Oil Filler Cap for GM Applications

Dorman 90202 is a threaded engine oil filler cap built to match the fit and function of the original cap on specified vehicles. It uses a black plastic housing with a rubber seal for a secure, standard replacement on a wide range of Chevrolet, GMC, Buick, and Cadillac models.

• Direct-fit, specific application oil cap
• Twist-on, threaded mounting design
• Black plastic housing with rubber gasket/seal
• White indicator markings for easy identification
• Non-vented design
• OE-style replacement for factory oil filler cap service

Product Details

This Dorman oil filler cap, part number 90202, is engineered for durability and reliable performance in everyday engine service. The circular cap measures approximately 2.193 inches in diameter and includes a seal to help maintain a proper closure at the oil fill opening. It is a standard replacement part for vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade, along with many other GM platforms listed in the fitment data. This part cross-references Motorad MO190 for the same application.

Common Issues This Part Can Address

• Broken or cracked oil filler cap
• Missing cap at the engine oil fill opening
• Worn seal that no longer closes securely
• Oil cap that no longer threads on properly
• Unreadable or faded cap markings

Installation Notes and Tips

Verify the engine oil fill opening and thread size before installation. This cap uses a threaded, twist-on design and should seat fully without forcing it. Confirm the vehicle application by year, make, and model before ordering, especially on GM trucks and SUVs such as the Chevrolet Silverado 1500, GMC Yukon, and Cadillac Escalade. If the original cap shows seal damage or thread wear, replace it promptly to restore a proper closure.

Quality Assurance

Dorman designs this engine oil filler cap to match original fit and function on specified vehicles, with a focus on durable construction and dependable service. Part number 90202 is built as a standard replacement for routine maintenance and repair.