Gates 31722 Fuel Tank Cap

OE Equivalent Fuel Cap for Classic GM and Chrysler Fitment

Gates 31722 is an OE Equivalent Fuel Cap built for dependable sealing on older Chrysler, Dodge, Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac applications. It is made with rugged, heavy-duty construction and matches OEM-level expectations for fit and function on shallow and deep cam filler necks.

Key Features

• OE Equivalent Fuel Cap construction for OE-style replacement fit
• Meets or exceeds OEM specifications for the listed applications
• Deep cam design with a 1.38 thread diameter and 2.38 shell diameter
• Emission control venting for the correct fuel system setup
• Fits shallow and deep cam filler neck designs, including vented and non-vented styles
• OE performance rating for direct replacement use

Product Details

The Gates OE Equivalent Fuel Cap line is built for drivers who need a direct replacement fuel tank cap that matches original equipment requirements. Part number 31722 is engineered for emission control applications and is listed with deep cam construction, making it a practical choice for classic vehicles such as the Chevrolet Camaro, Pontiac Firebird, and Chrysler Newport. This part cross-references Standard Ignition RX-103 for the same application.

Compatible With 1971-1974 Chevrolet Camaro, N/A; 1971-1974 Pontiac Firebird, N/A; and 1972-1979 Chrysler Newport, N/A, this fuel cap supports proper tank sealing on a wide range of vintage passenger cars. Gates 31722 is also listed across many other classic Buick, Cadillac, Oldsmobile, Dodge, and Pontiac models, including the Chevrolet Impala and Oldsmobile Cutlass.

Common Issues This Fuel Cap Can Address

• Fuel vapor loss caused by a worn or weak cap seal
• Check-engine or emissions-related concerns tied to cap sealing issues
• Fuel odor around the tank area from an improper seal
• Cap fit problems on deep cam filler necks
• Replacement needs for cracked, damaged, or missing fuel tank caps

Installation Notes and Tips

Verify filler neck style before installation, especially on shallow or deep cam necks. Confirm the cap matches the vehicle’s venting and emission-control requirements, and compare the thread diameter and shell diameter to the original cap before use. For best results, inspect the filler neck sealing surface for damage or corrosion before installing Gates 31722.

Quality Assurance

Gates OE Equivalent Fuel Caps are built to meet or exceed OEM specifications and use heavy-duty construction for consistent replacement performance. Part number 31722 is specified as an OE Equivalent Fuel Cap with OE performance characteristics for the listed applications.