Gates 31830 Fuel Tank Cap

OE Equivalent Fuel Cap for Ford, Lincoln, Mazda, and Mercury

Gates 31830 is an OE Equivalent Fuel Tank Cap built for direct replacement on a wide range of Ford, Lincoln, Mazda, and Mercury applications. It is made to meet or exceed OEM specifications and uses a quick-on cam design for a secure, factory-style seal.

• OE Equivalent Fuel Cap with rugged, heavy-duty construction
• Quick-On cam type for straightforward cap engagement
• Emission control venting
• Fits shallow and deep cam filler necks
• Works with vented, non-vented, and vented anti-surge filler neck designs
• OE Performance comparison rating
• Part number 31830 for application matching

Product Details

This Gates OE Equivalent Fuel Cap is engineered as a replacement for factory-style fuel tank caps on vehicles such as the Ford F-150, Ford Explorer, Ford Mustang, Lincoln Town Car, and Mercury Grand Marquis. The cap is built to match OE fit and function, with a 1.67-inch thread diameter, 2.91-inch shell diameter, and 2.38-inch depth. It is not lockable and is specified for emission control venting, making it a practical choice for restoring proper fuel system sealing and cap operation. Gates 31830 also cross-references Stant 46178 for the same application.

Common Issues This Fuel Cap Can Address

• Check engine light caused by a loose, worn, or failing fuel cap seal
• Fuel vapor leakage from a damaged cap or weak cam engagement
• Difficulty maintaining proper emission control system sealing
• Replacement needs after a missing, cracked, or deteriorated OE-style cap
• Fitment concerns on shallow or deep cam filler necks

Installation Notes and Fitment Tips

Confirm the filler neck style before ordering, especially on Ford F-150, Ford F-250 Super Duty, Ford Expedition, and Ford Explorer applications with notes for black-bottom OE caps, threaded filler neck differences, or stripped chassis exclusions. This cap is listed for multiple Ford, Lincoln, Mazda, and Mercury models across 1996-2006, including Ford Taurus, Ford Escape, Lincoln Navigator, Mazda Tribute, and Mercury Sable. Match the cap to the original OE-style design and verify the cam type and venting requirements for your vehicle.

Quality Assurance

Gates OE Equivalent Fuel Caps are built to meet or exceed OEM specifications and are backed by Gates’ OE-equivalent product standards for fit and function.