Gates 31734 Fuel Tank Cap

Gates 31734 Pre-Release Locking Fuel Cap

The Gates 31734 Pre-Release Locking Fuel Cap is a threaded, lockable fuel tank cap for specific late-model and older applications that use a pre-release locking design. It is built for emission-control systems and comes with two keys, making it a direct replacement choice for vehicles that require secure fuel sealing and keyed access.

Key Features

• Lockable fuel tank cap for added security
• Pre-release locking design with threaded cam type
• Emission control venting
• Thread diameter: 1.77 in.
• Shell diameter: 2.75 in.
• Depth: 2.38 in.
• Gates part number 31734

Product Details

Gates Pre-Release Locking Fuel Caps are made for specific vehicle applications and are sized to match the original threaded filler neck design. This cap is used on a wide range of vehicles, including Chevrolet Express 2500 and 3500, Ford F-250 Super Duty and F-350 Super Duty, and Jeep Wrangler applications that call for a pre-release locking fuel cap. The Gates 31734 is also listed for many GMC, Nissan, Subaru, Dodge, and Land Rover models, making it a fitment-specific replacement for vehicles that need emission-control sealing and keyed security.

This part cross-references Dorman - First Stop 46365 and Carlson 17501 for the same application.

Common Issues This Cap Can Address

• Missing or damaged locking fuel cap
• Fuel vapor leakage from a worn seal or poor cap fit
• Check engine light concerns related to fuel cap sealing
• Loss of fuel system security on keyed-cap applications
• Replacement needs after a broken or lost original cap

Installation Notes and Tips

Verify the filler neck style before ordering, since this cap is for threaded, pre-release locking applications. Confirm the vehicle year, make, and model against the listed fitment, especially on Ford F-250 Super Duty, Chevrolet Express, and Jeep Wrangler applications where filler neck design can vary. Install the cap by threading it on until it seats properly, then use the key to lock it in place.

Quality Assurance

Gates manufactures this fuel cap as a fitment-specific replacement for vehicles that require a locking, emission-control design. The cap is supplied with two keys for keyed operation.