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Flex Fuel Locking Fuel Caps

Gates Locking Flex Fuel caps feature yellow plastic covers and an E85 designation on them to remind vehicle operators that they have the option to use gasoline or E-85 Ethanol in their vehicles. A durable locking mechanism prevents tampering and fuel theft. The OE-quality product line covers virtually all flex fuel vehicles on the road today.

  • High visibility yellow cover; "E85" is printed on the cap
  • Helps prevent fuel contamination
  • Pressure and vacuum reliefs match OE specifications
  • Includes unique OE safety features like the break-away groove
  • Each cap comes with 2 keys; keyed-alike caps available on special order
  • Compatible with a wide range of flex fuel vehicles: Chevrolet, Chrysler, Dodge, Ford, GMC, Mercury, Plymouth

All Parts

1-5 of 5 Items
Part # Product # Description Type Cam Type Locking Venting Shell Diameter Neck Diameter Cap Depth
31780Y 74100247 31780Y YELLOW LOCKING FUEL CAP Flex Fuel Regular Locking Fuel Caps Threaded false Pressure Vacuum 2.91 in 1.77 in 2.61 in
31828Y 74100248 31828Y YELLOW LOCKING FUEL CAP Flex Fuel Regular Locking Fuel Caps 1/8 Turn false Pressure Vacuum 2.91 in 1.77 in 2.48 in
31836Y 74100249 31836Y YELLOW LOCKING FUEL CAP Flex Fuel Regular Locking Fuel Caps Quick-On false Pressure Vacuum 2.91 in 1.78 in 2.61 in
31842Y 74100261 31842Y YELLOW LOCKING FUEL CAP Flex Fuel Regular Locking Fuel Caps Quick-On false Vacuum Only 2.69 in 1.56 in 2.53 in
31844Y 74100231 31844Y YELLOW LOCKING FUEL CAP Flex Fuel Regular Locking Fuel Caps Quick-On false Vacuum Only 2.69 in 1.56 in 2.53 in
1-5 of 5 Items

OE Quality for the Aftermarket

Our long-standing partnerships working with automotive OEMs on production vehicles enable us to produce aftermarket parts of superior quality, durability, and performance. Gates Flex Fuel Caps offer a durable construction of wear-resistant thermoplastic compound to ensure tight closing and prevent spills and leaks. Our OEM-caliber fuel caps are rich in features that keep the fuel system operating properly and safely. Our OEM-caliber fuel caps are rich in features that keep the fuel system operating properly and safely. The Yellow color and E85 designation reminds motorists of the option to use gasoline or E85 ethanol in their vehicles. Features a locking mechanism to prevent theft, vanadalism, or accidental incorrect fluid fills.

Optimum fuel pressure

Fuel caps can have two different breathing systems: vented or non-vented. A non-vented fuel cap is recommended when your fuel tank is ventilated through the filler neck, whereas the vented fuel cap is equipped with a special breathing valve so that it can be used on non-ventilated fuel tanks.