Gates 31637 Fuel Tank Cap

OE Equivalent Fuel Cap for Reliable Tank Sealing

The Gates 31637 OE Equivalent Fuel Cap is built for direct replacement on a wide range of vehicles that use a threaded filler neck. It meets or exceeds OEM specifications and is engineered for shallow and deep cam filler necks, including vented and non-vented emission-control applications.

For drivers servicing Honda Civic, Honda CR-V, Acura MDX, or Nissan Armada fuel system issues, this fuel tank cap provides an OE-style fit and function without changing the original tank setup.

Key Features

• OE Equivalent Fuel Cap with OE Performance comparison rating
• Rugged, heavy-duty construction for everyday fuel system service
• Threaded cam type for secure engagement
• Fits shallow and deep cam filler necks
• Works with vented, non-vented, and vented anti-surge designs
• Emission control venting configuration
• Thread diameter: 1.77 in; shell diameter: 2.91 in; depth: 2.27 in
• Non-lockable design

Product Details

Gates OE Equivalent Fuel Cap 31637 is a direct-fit replacement fuel tank cap for many import and domestic applications. The cap is designed to meet or exceed OEM specifications and maintain proper sealing at the filler neck, helping preserve the vehicle’s evaporative emissions system performance. This part cross-references Wix 46184 and Febi-Bilstein 31637 for the same application.

Compatible With applications include 2006-2011 Honda Civic, 2005-2011 Honda CR-V, 2005-2011 Honda Pilot, 2005-2011 Honda Accord, 2005-2011 Acura MDX, 2017-2024 Nissan Armada, and 2014-2023 INFINITI QX80. It also covers select Toyota GR86, Toyota 86, and Ford Focus applications listed in the fitment data.

Common Issues This Part Can Address

• Fuel cap warning light caused by a worn or leaking cap seal
• Evaporative emissions system leak codes related to poor cap sealing
• Loose or damaged threaded fuel cap engagement
• Fuel odor from an improperly sealing filler neck cap
• Replacement for a cracked, missing, or deteriorated fuel tank cap

Installation Notes and Tips

Verify the filler neck style before installation, especially on vehicles with threaded cam necks. Confirm the cap seats fully and tightens correctly by hand. After installation, clear any stored evaporative emissions codes if required by the vehicle’s diagnostic procedure. For fitment-specific service, match the application to the listed year, make, and model, such as 2006-2011 Honda Civic, 2017-2024 Nissan Armada, or 2014-2023 INFINITI QX80.

Quality Assurance

Gates manufactures this OE Equivalent Fuel Cap to meet or exceed OEM specifications, with construction intended for dependable sealing and emission-control performance across the listed applications.