Gates 31857 Fuel Tank Cap

OE Equivalent Fuel Cap for Select Ford, Volvo, Mazda, Jaguar, and Land Rover Applications

The Gates 31857 OE Equivalent Fuel Cap is built with heavy-duty construction and engineered to meet or exceed OEM specifications. It is a pressure vacuum fuel tank cap with a Quick-On cam type, made to service shallow and deep cam filler necks in select Ford Transit Connect, Volvo C30/C70/S40/V50, Mazda 3/5, Jaguar S-Type/X-Type, and Land Rover LR3 applications.

Gates OE Equivalent Fuel Cap line focuses on direct-fit replacement caps that match original equipment performance requirements. The 31857 is designed for vehicles using vented, non-vented, and vented anti-surge filler neck configurations, making it a practical OE-style replacement for common fuel system service needs.

Key Features

• Gates OE Equivalent Fuel Cap, part number 31857
• Pressure vacuum venting for proper fuel tank sealing and vapor control
• Quick-On cam type for select filler neck designs
• Fits shallow and deep cam filler necks
• Heavy-duty construction for OE-style replacement service
• OE Performance comparison rating
• Non-lockable design
• Thread diameter: 1.77 in; shell diameter: 2.9 in; depth: 2.47 in

Detailed Description

The Gates 31857 fuel tank cap is a direct replacement option for drivers and technicians servicing evaporative sealing concerns on select import and domestic vehicles. It is listed for 2001-2013 applications across Ford, Volvo, Mazda, Jaguar, and Land Rover models, including the 2010-2013 Ford Transit Connect, 2008-2013 Volvo C30, 2006-2013 Volvo C70, 2004-2011 Volvo S40, 2005-2011 Volvo V50, 2006-2010 Mazda 5, 2004-2009 Mazda 3, 2009 Mazda 3 Sport, 2005-2008 Jaguar S-Type, 2001-2007 Jaguar X-Type, and 2005-2009 Land Rover LR3. This part cross-references Stant 10851 for the same application.

Use Gates 31857 when you need an OE-style fuel cap that matches the original sealing approach and filler neck style on the vehicle. The design supports pressure vacuum venting and is intended for applications requiring a Quick-On cam engagement.

What It Helps Address

• Loose or damaged fuel cap sealing surfaces
• Fuel vapor leak codes related to cap sealing
• Difficulty maintaining proper tank pressure or vacuum
• Replacement needs after a worn or missing OE-style cap
• Fitment issues on shallow or deep cam filler necks

Installation Notes and Tips

Confirm the filler neck style before ordering, especially on Jaguar X-Type applications noted as without threaded filler neck. Match the cap type, venting style, and dimensions to the original cap specification. After installation, tighten the cap until it seats fully and verify that the cap engages correctly on the cam filler neck.

Quality Assurance

Gates OE Equivalent Fuel Caps are built to meet or exceed OEM specifications and are designed for OE-style performance in fuel system service. Part number 31857 is manufactured as a direct replacement fuel cap for the listed applications.