Gates 31692 Fuel Tank Cap

Gates 31692 Regular Locking Fuel Cap

The Gates 31692 regular locking fuel cap is built for classic vehicles that need a secure, OE-style fuel tank cap with controlled venting. It is a direct-fit fuel cap solution for many Chevrolet, Pontiac, Buick, Chrysler, Ford, Mercury, Lincoln, Cadillac, Dodge, and Oldsmobile applications from 1950 through 1974.

Key Features

• Lockable regular fuel cap for added fuel tank security
• Two-way pressure relief and vacuum relief valve helps the tank breathe while limiting fuel vapor escape
• Vented anti-surge design
• Shallow cam style
• Thread diameter: 1.38 in.
• Shell diameter: 2.63 in.
• Depth: 2.08 in.
• Meets OEM specifications and Federal and State emission requirements per manufacturer description

Product Details

Gates Regular Locking Fuel Cap 31692 is a replacement fuel tank cap for older vehicles that require a regular locking, vented design. The cap’s pressure and vacuum relief function supports normal tank breathing, while the anti-surge venting helps manage fuel movement in the tank. This makes it a practical choice for drivers restoring or maintaining classic Chevrolet Camaro, Pontiac Catalina, and Ford Thunderbird applications, as well as many other vintage models listed in the fitment data.

This part cross-references Four Seasons 35012 for the same application.

Common Problems This Part Can Solve

• Loose or missing fuel cap security on a classic vehicle
• Fuel vapor odor caused by a worn cap seal or venting issue
• Fuel tank pressure or vacuum imbalance from a failed cap valve
• Incorrect fitment on vehicles that require a regular locking fuel cap
• Restoration needs for older GM, Ford, Chrysler, and Pontiac fuel systems

Installation Notes and Tips

Verify the cap style, thread diameter, and cam type before installation. This Gates 31692 fuel cap is listed for vehicles with shallow cam applications and specific emission-system notes, including many models without California emission systems or without evaporative emission systems. Confirm the vehicle’s original fuel tank neck and venting requirements before ordering, especially on 1970 Chevrolet Bel Air, 1969 Chevrolet Nova, and 1961-1966 Ford Thunderbird applications.

Compatible vehicle examples include Fits 1973-1974 Chevrolet C10 Suburban, N/A; Fits 1970 Chevrolet Camaro, N/A; and Fits 1961-1966 Ford Thunderbird, N/A.

Quality Assurance

Gates manufactures this locking fuel tank cap to meet OEM specifications and stated Federal and State emission requirements. The 31692 part number is supported by broad interchange coverage for classic fuel system service and restoration work.