Gates 31708KA Fuel Tank Cap

Keyed Alike Fuel Cap for Secure Fuel Tank Closure

The Gates Keyed Alike Fuel Cap, part number 31708KA, is a lockable fuel tank cap built for fleet use and multiple like-model vehicles that need shared-key convenience. It is designed for threaded filler neck applications and includes pressure relief venting for proper tank operation.

Key Features

• Lockable fuel tank cap for added fuel security
• Keyed alike design simplifies service across multiple vehicles
• Threaded cam type for threaded filler neck applications
• Pressure relief venting supports normal fuel system operation
• Shell diameter: 2.91 in; thread diameter: 1.77 in; depth: 2.61 in

Product Details

Gates Keyed Alike Fuel Cap 31708KA is intended for vehicles that use a threaded filler neck and need a secure, keyed fuel cap solution. The keyed alike format is practical for fleet maintenance, dealership service, and owners managing several Volkswagen and Audi models with the same fuel cap application. This part number 31708KA cross-references BBB Industries 17597 for the same application.

Compatible With select Volkswagen Jetta, Golf, GTI, Golf R, Golf SportWagen, Beetle, Bora, GLI, R32, Phaeton, Jetta City, and Clasico models, plus Audi A3, A4, A4 Quattro, A6, A6 Quattro, S4, S5, S6, RS4, A8 Quattro, TT, and Mazda RX-7 applications listed below.

Common Issues This Fuel Cap Can Address

• Missing or damaged lockable fuel cap
• Fuel tank security concerns on fleet vehicles
• Incorrect cap fitment on threaded filler neck systems
• Fuel vapor sealing issues related to a worn cap
• Need for a single-key fuel cap setup across multiple vehicles

Installation Notes and Tips

Verify that the vehicle uses a threaded filler neck before ordering. Match the cap to the vehicle’s listed year, make, and model, and confirm the existing cap style and locking requirement. For fitment-specific applications, use the exact vehicle listing rather than relying on appearance alone. Fits 2005-2016 Volkswagen Jetta, N/A; Fits 2007-2013 Volkswagen GTI, N/A; Fits 2006-2010 Audi A6, N/A.

• Fits 2018 Volkswagen Jetta, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2005-2016 Volkswagen Jetta, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2011-2015 Volkswagen Clasico, N/A; Keyed Alike Fuel Cap
• Fits 2014 Volkswagen GTI, N/A; Keyed Alike Fuel Cap
• Fits 2010-2013 Volkswagen Golf, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2012-2013 Volkswagen Golf R, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2010-2013 Volkswagen Golf SportWagen, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2007-2013 Volkswagen GTI, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2012 Volkswagen Golf, N/A; Keyed Alike Fuel Cap
• Fits 2006-2011 Volkswagen Beetle, N/A; Keyed Alike Fuel Cap
• Fits 2006-2010 Audi A6, N/A; Keyed Alike Fuel Cap
• Fits 2005-2010 Audi A6 Quattro, N/A; Keyed Alike Fuel Cap
• Fits 2007-2010 Audi S6, N/A; Keyed Alike Fuel Cap
• Fits 2010 Volkswagen Beetle Cabrio, N/A; Keyed Alike Fuel Cap
• Fits 2010 Volkswagen Bora, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2005-2008 Volkswagen Bora, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2010 Volkswagen GLI, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2006-2009 Audi A3, N/A; Keyed Alike Fuel Cap
• Fits 2006-2009 Audi A3 Quattro, N/A; Keyed Alike Fuel Cap
• Fits 2004-2009 Audi A4 Quattro, N/A; Keyed Alike Fuel Cap
• Fits 2004-2009 Audi S4, N/A; Keyed Alike Fuel Cap
• Fits 2009 Audi S5, N/A; Keyed Alike Fuel Cap
• Fits 2009 Volkswagen Bora, N/A; Keyed Alike Fuel Cap
• Fits 2004-2008 Audi A4, N/A; Keyed Alike Fuel Cap
• Fits 2007-2008 Audi RS4, N/A; Keyed Alike Fuel Cap
• Fits 2007-2008 Volkswagen Jetta City, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2008 Volkswagen R32, N/A; W/Threaded Filler Neck; Keyed Alike Fuel Cap
• Fits 2004-2006 Volkswagen Phaeton, N/A; Keyed Alike Fuel Cap
• Fits 2005 Audi A8 Quattro, N/A; Keyed Alike Fuel Cap
• Fits 2005 Audi TT, N/A; Keyed Alike Fuel Cap
• Fits 2004-2005 Volkswagen Beetle, N/A; OE Has Tether; Keyed Alike Fuel Cap
• Fits 2004-2005 Volkswagen Golf, N/A; W/O Central Locking Fuel Cap; Keyed Alike Fuel Cap
• Fits 2002-2005 Volkswagen Jetta, N/A; W/O Central Locking Fuel Cap; Keyed Alike Fuel Cap
• Fits 1986-1991 Mazda RX-7, N/A; Keyed Alike Fuel Cap

Quality Assurance

Gates manufactures this fuel cap as a keyed alike replacement for applications that require secure closure and pressure relief venting. Part number 31708KA is built to match the listed threaded filler neck fitments and locking fuel cap requirements.