Gates 31838 Fuel Tank Cap

OE Equivalent Fuel Cap for Select Vehicles

The Gates 31838 OE Equivalent Fuel Cap is built for direct replacement on a wide range of Chrysler, Dodge, Jeep, Ram, Nissan, and other applications. It is made to meet or exceed OEM specifications and uses rugged, heavy-duty construction for dependable fuel tank sealing and emission control.

With a Quick-On cam design, this fuel tank cap is made to work with shallow and deep cam filler necks, including vented, non-vented, and vented anti-surge styles. The Gates OE Equivalent Fuel Cap line focuses on OE-style fit and function for drivers servicing vehicles such as the Ram 1500, Jeep Wrangler, and Dodge Grand Caravan.

Key Features

• OE Equivalent Fuel Cap design for OE-style replacement fit and function
• Meets or exceeds OEM specifications
• Quick-On cam type for straightforward cap engagement
• Compatible with shallow and deep cam filler necks
• Supports vented, non-vented, and vented anti-surge applications
• Emission control venting
• Non-lockable design
• Gates part number 31838

Detailed Product Overview

Gates 31838 is an OE Equivalent Fuel Cap engineered for vehicles that require a precise fuel tank seal and emission control performance. The cap features a 2.78 thread diameter, 2.41 depth, and 1.78 shell diameter, with a Quick-On cam style that matches many factory filler neck designs. This makes it a practical replacement for drivers looking for an OE-style fuel cap for Ram 2500 and 3500 trucks, Jeep Cherokee and Wrangler models, and Dodge Caravan and Grand Caravan applications.

This part cross-references CSF 10838 and Mopar 52030377AB for the same application.

Common Problems This Fuel Cap Can Address

• Loose or damaged fuel cap sealing surfaces
• Fuel vapor leakage related to worn cap components
• Emission control warning concerns tied to a poor cap seal
• Difficulty matching OE-style cam filler neck fitment
• Replacement needs after a cracked, missing, or non-functioning cap

Installation Notes and Tips

Verify the filler neck style before installation, especially on vehicles with Quick-On cam connections. Confirm the application against the vehicle’s year, make, and model, since fitment varies across Ram, Dodge, Jeep, Nissan, Chrysler, Mercedes-Benz, Mitsubishi, Subaru, and related platforms. For best results, inspect the filler neck sealing area for dirt, corrosion, or damage before installing the cap.

Compatible With: Fits 2011-2024 Ram 2500, N/A; Fits 2011-2024 Ram 3500, N/A; Fits 2011-2022 Ram 1500, N/A; Fits 2019-2022 Ram 1500 Classic, N/A; Fits 2000-2020 Dodge Grand Caravan, N/A; Fits 2009-2020 Dodge Journey, N/A; Fits 2008-2019 Dodge Challenger, N/A; Fits 2013-2019 Mitsubishi Outlander Sport, N/A; Fits 2015-2019 Ram ProMaster City, N/A; Fits 2014-2018 Dodge Charger, N/A; Fits 2006-2010 Dodge Charger, N/A; Fits 2012-2018 Fiat 500, N/A; Fits 2014-2018 Fiat 500L, N/A; Fits 2014-2018 Jeep Cherokee, N/A; Fits 2000-2001 Jeep Cherokee, N/A; Fits 2001-2018 Jeep Wrangler, N/A; Fits 2018 Jeep Wrangler JK, N/A; Fits 2011-2017 Chrysler 200, N/A; Fits 2007-2017 Jeep Compass, N/A; Fits 2007-2017 Jeep Patriot, N/A.

Quality Assurance

Gates designs this OE Equivalent Fuel Cap to align with OEM-level specifications and application requirements for emission control and filler neck compatibility. The Gates 31838 is built as an OE-style replacement part for consistent fit and sealing performance.