Dorman 80991 Engine Oil Filler Cap

Engine Oil Filler Cap for Ford and Lincoln

Dorman 80991 is an engine oil filler cap built to match the fit and function of the original cap on specified vehicles. It uses a black plastic, twist-lock design with an oil-resistant construction for dependable sealing on a wide range of Ford, Lincoln, and Mercury applications.

• OE-style replacement engine oil filler cap
• Twist-lock design for secure installation
• Black plastic construction
• Oil-resistant material
• Diameter: 35.25 mm; height: 24.5 mm
• Dipstick not included

Detailed Fitment and Application

Compatible with a broad range of Ford and Lincoln vehicles, including Ford Edge, Ford Explorer, Ford F-150, Ford Mustang, Lincoln MKX, Lincoln Navigator, and related models. This Dorman 80991 oil filler cap is designed for drivers searching for a direct replacement for worn, cracked, or missing caps on 2001-2018 Ford, Lincoln, and Mercury applications.

This part cross-references OE numbers EP5Z6766A and ZZC210250A for the same application. Dorman 80991 is a practical replacement choice when you need a cap that matches the original style and dimensions without changing the factory setup.

What This Part Helps Address

• Missing or damaged engine oil filler cap
• Loose or poor-fitting cap that does not seal properly
• Cracked plastic cap from heat and age exposure
• Oil residue around the filler opening from a worn seal
• Service replacement for routine maintenance on Ford and Lincoln engines

Installation Notes and Tips

Remove the old cap, confirm the filler neck style and diameter match the replacement, then install the new twist-lock cap by hand until it seats securely. Verify the cap is fully engaged after each oil service. For fitment-specific searches, this part is commonly selected for Ford F-150, Ford Explorer, and Lincoln Navigator oil filler cap replacement needs.

Quality Assurance

Dorman engineers this replacement cap to match original fit and function for specified vehicles, with a durable plastic body and oil-resistant construction for reliable everyday use. Part number 80991 is built as a direct-fit service replacement for the listed applications.