A worn or missing fuel cap can trigger an evaporative emissions check engine light and let fuel vapor escape. This Gates fuel cap is a rugged, heavy-duty replacement built to meet or exceed the original equipment specification.

Gates 31778D Diesel Locking Fuel Cap Features:

• Locking Cap Includes Two Keys
• Rugged, Heavy-Duty Construction
• Meets or Exceeds OEM Specifications
• Application Options Apply on Some Vehicles, Check the Fitment Tab Before Ordering
• Sold Individually

Vehicle Applications:

• 1980-1985 Buick Electra 4.3L V6, 5.7L V8
• 1980-1982 Buick Estate Wagon 5.7L V8
• 1980-1985 Buick LeSabre 5.7L V8
• 1981-1985 Buick Century 4.3L V6, 5.7L V8
• 1981-1985 Buick Regal 4.3L V6, 5.7L V8
• 1981-1985 Buick Riviera 5.7L V8
• 1978-1985 Cadillac Seville 5.7L V8
• 1979-1985 Cadillac DeVille 4.3L V6, 5.7L V8
• 1979-1985 Cadillac Eldorado 5.7L V8
• 1979-1985 Cadillac Fleetwood 4.3L V6, 5.7L V8
• 1985 Cadillac Commercial Chassis 4.3L V6
• 1979-1986 Chevrolet C10 5.7L V8, 6.2L V8
• 1980-1985 Chevrolet Caprice 5.7L V8
• 1980-1985 Chevrolet Impala 5.7L V8
• 1981-1986 Chevrolet Chevette 1.8L L4
• 1982-1986 Chevrolet C10 Suburban 6.2L V8
• 1982-1986 Chevrolet C20 6.2L V8
• 1982-1986 Chevrolet C20 Suburban 6.2L V8
• 1982-1986 Chevrolet C30 6.2L V8
• 1982-1985 Chevrolet Celebrity 4.3L V6
• 1982-1986 Chevrolet K10 6.2L V8
• 1982-1986 Chevrolet K10 Suburban 6.2L V8
• 1982-1986 Chevrolet K20 6.2L V8
• 1982-1986 Chevrolet K20 Suburban 6.2L V8
• 1982-1986 Chevrolet K30 6.2L V8
• 1982-1986 Chevrolet K5 Blazer 6.2L V8
• 1982-1983 Chevrolet Malibu 4.3L V6, 5.7L V8
• 1982-1984 Chevrolet Monte Carlo 4.3L V6, 5.7L V8
• 1982-1989 Chevrolet P20 6.2L V8
• 1982-1997 Chevrolet P30 3.9L L4, 6.2L V8, 6.5L V8
• 1983-1984 Chevrolet El Camino 5.7L V8
• 1983-1995 Chevrolet G20 6.2L V8, 6.5L V8
• 1983-1996 Chevrolet G30 6.2L V8, 6.5L V8
• 1983-1985 Chevrolet S10 2.2L L4
• 1987-1994 Chevrolet Blazer 6.2L V8, 6.5L V8
• 1987 Chevrolet R10 6.2L V8
• 1987-1988 Chevrolet R10 Suburban 6.2L V8
• 1987-1988 Chevrolet R20 6.2L V8
• 1987-1988 Chevrolet R20 Suburban 6.2L V8
• 1987-1988 Chevrolet R30 6.2L V8
• 1987 Chevrolet V10 6.2L V8
• 1987-1988 Chevrolet V10 Suburban 6.2L V8
• 1987 Chevrolet V20 6.2L V8
• 1987-1988 Chevrolet V20 Suburban 6.2L V8
• 1987-1988 Chevrolet V30 6.2L V8
• 1988-1998 Chevrolet C1500 6.2L V8, 6.5L V8
• 1988-2000 Chevrolet C2500 6.2L V8, 6.5L V8
• 1988-2000 Chevrolet C3500 6.2L V8, 6.5L V8
• 1988-1998 Chevrolet K1500 6.2L V8, 6.5L V8
• 1988-2000 Chevrolet K2500 6.2L V8, 6.5L V8
• 1988-2000 Chevrolet K3500 6.2L V8, 6.5L V8
• 1989-1991 Chevrolet R1500 Suburban 6.2L V8
• 1989 Chevrolet R2500 6.2L V8
• 1989-1991 Chevrolet R2500 Suburban 6.2L V8
• 1989-1991 Chevrolet R3500 6.2L V8
• 1989-1991 Chevrolet V1500 Suburban 6.2L V8
• 1989-1991 Chevrolet V2500 Suburban 6.2L V8
• 1989-1991 Chevrolet V3500 6.2L V8
• 1991-2002 Chevrolet C3500HD 6.2L V8, 6.5L V8
• 1994-1999 Chevrolet C1500 Suburban 6.5L V8
• 1994-1999 Chevrolet C2500 Suburban 6.5L V8
• 1994-1999 Chevrolet K1500 Suburban 6.5L V8
• 1994-1999 Chevrolet K2500 Suburban 6.5L V8
• 1995-1999 Chevrolet Tahoe 6.5L V8
• 1996-2012 Chevrolet Express 2500 6.5L V8, 6.6L V8
• 1996-2012 Chevrolet Express 3500 6.5L V8, 6.6L V8
• 2001-2012 Chevrolet Silverado 2500 HD 6.6L V8
• 2001-2006 Chevrolet Silverado 3500 6.6L V8
• 2007 Chevrolet Silverado 2500 HD Classic 6.6L V8
• 2007 Chevrolet Silverado 3500 Classic 6.6L V8
• 2007-2012 Chevrolet Silverado 3500 HD 6.6L V8
• 2012 Chevrolet Express 4500 6.6L V8
• 1985 Dodge Power Ram 50 2.3L L4
• 1985 Dodge Ram 50 2.3L L4
• 1989-1993 Dodge D250 5.9L L6
• 1989-1993 Dodge D350 5.9L L6
• 1989-1993 Dodge W250 5.9L L6
• 1989-1993 Dodge W350 5.9L L6
• 1994-1999 Dodge Ram 2500 5.9L L6
• 1994-1999 Dodge Ram 3500 5.9L L6
• 1983-1991 Ford E-250 Econoline Club Wagon 6.9L V8, 7.3L V8
• 1983-1998 Ford E-350 Econoline 6.9L V8, 7.3L V8
• 1983-2001 Ford E-350 Econoline Club Wagon 6.9L V8, 7.3L V8
• 1983-1987 Ford Ranger 2.2L L4, 2.3L L4
• 1984-1987 Ford Escort 2.0L L4
• 1984-1986 Ford Tempo 2.0L L4
• 1987-1996 Ford F-250 6.9L V8, 7.3L V8
• 1987-1997 Ford F-350 6.9L V8, 7.3L V8
• 1988-1994 Ford F-59 Commercial Stripped Chassis 7.3L V8
• 1988-1997 Ford F-Super Duty 7.3L V8
• 1997 Ford F-250 HD 7.3L V8
• 1999-2002 Ford E-450 Econoline Super Duty 7.3L V8
• 1999-2008 Ford F-250 Super Duty 6.0L V8, 6.4L V8, 7.3L V8
• 1999-2008 Ford F-350 Super Duty 6.0L V8, 6.4L V8, 7.3L V8
• 1999-2003 Ford F-450 Super Duty 7.3L V8
• 1999-2003 Ford F-550 Super Duty 7.3L V8
• 2000-2003 Ford E-350 Super Duty 7.3L V8
• 2000-2003 Ford F-650 7.3L V8
• 2000-2003 Ford F-750 7.3L V8
• 2001-2005 Ford Excursion 6.0L V8, 7.3L V8
• 2002 Ford E-550 Econoline Super Duty 7.3L V8
• 2003 Ford E-350 Club Wagon 7.3L V8
• 2003 Ford E-450 Super Duty 7.3L V8
• 2003 Ford E-550 Super Duty 7.3L V8
• 1979-1997 GMC C1500 5.7L V8, 6.2L V8, 6.5L V8
• 1982-1999 GMC C1500 Suburban 6.2L V8, 6.5L V8
• 1982-2000 GMC C2500 6.2L V8, 6.5L V8
• 1982-1999 GMC C2500 Suburban 6.2L V8, 6.5L V8
• 1982-2000 GMC C3500 6.2L V8, 6.5L V8
• 1982-1991 GMC Jimmy 6.2L V8
• 1982-1998 GMC K1500 6.2L V8, 6.5L V8
• 1982-1999 GMC K1500 Suburban 6.2L V8, 6.5L V8
• 1982-2000 GMC K2500 6.2L V8, 6.5L V8
• 1982-1999 GMC K2500 Suburban 6.2L V8, 6.5L V8
• 1982-2000 GMC K3500 6.2L V8, 6.5L V8
• 1982-1989 GMC P2500 6.2L V8
• 1982-1997 GMC P3500 3.9L L4, 6.2L V8, 6.5L V8
• 1983-1984 GMC Caballero 5.7L V8
• 1983-1995 GMC G2500 6.2L V8, 6.5L V8
• 1983-1996 GMC G3500 6.2L V8, 6.5L V8
• 1984-1985 GMC S15 2.2L L4
• 1987 GMC R1500 6.2L V8
• 1987-1991 GMC R1500 Suburban 6.2L V8
• 1987-1989 GMC R2500 6.2L V8
• 1987-1991 GMC R2500 Suburban 6.2L V8
• 1987-1991 GMC R3500 6.2L V8
• 1987 GMC V1500 6.2L V8
• 1987-1991 GMC V1500 Suburban 6.2L V8
• 1987 GMC V2500 6.2L V8
• 1987-1991 GMC V2500 Suburban 6.2L V8
• 1987-1991 GMC V3500 6.2L V8
• 1991-2002 GMC C3500HD 6.2L V8, 6.5L V8
• 1994-1997 GMC Yukon 6.5L V8
• 1996-2013 GMC Savana 2500 6.5L V8, 6.6L V8
• 1996-2013 GMC Savana 3500 6.5L V8, 6.6L V8
• 2001-2013 GMC Sierra 2500 HD 6.6L V8
• 2001-2006 GMC Sierra 3500 6.6L V8
• 2006 GMC C4500 Topkick 6.6L V8
• 2007 GMC Sierra 2500 HD Classic 6.6L V8
• 2007 GMC Sierra 3500 Classic 6.6L V8
• 2007-2013 GMC Sierra 3500 HD 6.6L V8
• 2011-2016 GMC Savana 4500 6.6L V8
• 1985-1987 Jeep Cherokee 2.1L L4
• 1985 Jeep Wagoneer 2.1L L4
• 1986-1987 Jeep Comanche 2.1L L4
• 1984-1985 Lincoln Continental 2.4L L6
• 1984-1985 Lincoln Mark VII 2.4L L6
• 1984-1987 Mercury Lynx 2.0L L4
• 1984-1986 Mercury Topaz 2.0L L4
• 1978-1985 Oldsmobile 98 4.3L V6, 5.7L V8
• 1978-1985 Oldsmobile Custom Cruiser 5.7L V8
• 1978-1985 Oldsmobile Delta 88 5.7L V8
• 1979-1984 Oldsmobile Cutlass Calais 4.3L V8, 4.3L V6, 5.7L V8
• 1979-1985 Oldsmobile Cutlass Salon 4.3L V8, 5.7L V8
• 1979-1985 Oldsmobile Cutlass Supreme 4.3L V8, 4.3L V6, 5.7L V8
• 1979-1985 Oldsmobile Toronado 5.7L V8
• 1980-1981 Oldsmobile Cutlass 5.7L V8
• 1980-1983 Oldsmobile Cutlass Cruiser 5.7L V8
• 1982-1985 Oldsmobile Cutlass Ciera 4.3L V6
• 1980-1984 Pontiac Bonneville 5.7L V8
• 1980-1981 Pontiac Catalina 5.7L V8
• 1981-1986 Pontiac Acadian 1.8L L4
• 1981-1984 Pontiac Grand Prix 5.7L V8
• 1982-1985 Pontiac 6000 4.3L V6
• 1983-1985 Pontiac Parisienne 5.7L V8
• 2000-2003 Starcraft Bus Starlite 7.3L V8
• 1984-1986 Toyota Camry 1.8L L4, 2.0L L4
• 1984-1985 Toyota Corolla 1.8L L4
• 1984-1987 Toyota Truck 2.4L L4
• 1980-1981 Volvo 264 2.4L L6
• 1980 Volvo 265 2.4L L6
• 1982-1984 Volvo 244 2.4L L6
• 1982-1984 Volvo 245 2.4L L6
• 1983-1985 Volvo 760 2.4L L6
• 1985-1986 Volvo 740 2.4L L6
• 1985 Volvo 745 2.4L L6