Dorman 80986 Engine Oil Filler Cap

Reliable Engine Oil Filler Cap for Chevrolet, GMC, and Hummer

The Dorman 80986 engine oil filler cap is designed to provide a secure seal for your vehicle's engine oil reservoir. Engineered with durable nylon material and a twist lock design, this oil cap is compatible with select Chevrolet, GMC, and Hummer models, ensuring proper fit and function.

• Constructed from durable black nylon for long-lasting use
• Measures 2.36 inches in diameter and 1.18 inches in height
• Twist lock type for secure and easy installation
• Oil resistant material to withstand engine conditions
• Compatible with Chevrolet Express 2500/3500, GMC Sierra 2500 HD/3500, Hummer H1, and more

Durable Design and Precise Fitment

The Dorman 80986 engine oil filler cap is manufactured from high-quality nylon, providing resistance to oil and heat commonly found in engine compartments. Its black finish blends seamlessly with engine components while offering durability. The twist lock mechanism ensures a tight seal to prevent oil leaks and contamination. With a diameter of 2.36 inches and a height of 1.18 inches, this cap is engineered to fit specific heavy-duty Chevrolet, GMC, and Hummer models, including the Express 2500 and 3500 series, Sierra 2500 HD and 3500 HD, Silverado 2500 HD and 3500 HD, Savana 2500 and 3500, and the Hummer H1.

Compatible Vehicles and Applications

This engine oil filler cap is compatible with a range of Chevrolet, GMC, and Hummer vehicles, making it suitable for professional repairs and maintenance. It is designed to replace worn or damaged oil caps on the following models:

• Chevrolet Express 2500 and 3500
• GMC Savana 2500 and 3500
• GMC Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD
• Chevrolet Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD
• Hummer H1

Common Issues Addressed by the Dorman 80986 Oil Cap

• Prevents oil leaks caused by cracked or damaged filler caps
• Maintains proper engine oil pressure and prevents contamination
• Resists degradation from engine oil and heat exposure
• Ensures a secure seal to avoid engine performance issues
• Replaces lost or missing oil filler caps for safe engine operation

Installation Notes and Tips

Installation of the Dorman 80986 engine oil filler cap is straightforward. Align the cap with the filler neck and twist clockwise until it locks securely in place. Ensure the cap is fully seated to prevent oil leaks. No special tools are required, but inspect the filler neck for damage or debris before installation to ensure a proper seal.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications. The 80986 engine oil filler cap undergoes quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship. Refer to Dorman’s official documentation for complete warranty information.