Upgrade your vehicle’s ignition system with ACCEL 0276S-4 U-Groove Shorty Spark Plugs. Specifically designed for cars with headers, these plugs boast a reduced length of 3/16 to 3/8 inches, providing critical clearance between the spark plug boot and the exhaust manifold or header tube. By eliminating boot burn and header dimpling, ACCEL Shorty Spark Plugs facilitate easier installation and removal, making them ideal for applications with cramped engine compartments. Harness the exceptional conduction of copper, allowing for a superior spark, especially in high-performance environments where powerful combustion pressures exist. More than just a spark plug, the ACCEL U-Groove comes with a copper core and a unique design that efficiently dissipates heat and significantly reduces the risk of misfires, thus boosting your engine's performance and longevity. The copper-glass gas-tight seal, alongside machine-rolled threads, ensures precise engagement and dependable torque retention. Engineered with an advanced five-rib aluminum insulator and U-Groove ground electrode, these spark plugs are crafted for enhanced ignition efficiency. Upgrade to ACCEL U-Groove Shorty Spark Plugs today to experience enhanced ignition performance that powers your drive, ensuring a smooth start every time.

• Reduced length prevents boot burning
• U-Groove electrode for strong spark delivery
• Copper core for excellent heat dissipation
• Five-rib aluminum insulator ensures stability
• Machined threads for precise fit and torque
• Pack of four
• perfect for comprehensive ignition overhaul
• Compatible with Buick, Chevrolet, Ford, and more

Assembly Method:	Tapered
Color:	White
Gap Size:	0.032 in.
Hex Size:	0.625 in.
Package Quantity:	4
Projected Tip:	Yes
Reach:	0.460 in.
Resistor:	No
Thread Size:	14mm
WARNING CA Proposition 65:	No

Fits what vehicles: 1967-1974 Buick Electra, 1967-1974 Buick Riviera, 1967-1970 Buick Wildcat, 1968-1969 Buick GS 350, 1968 Buick GS 400, 1968-1974 Buick LeSabre, 1968-1972 Buick Skylark, 1968-1969 Buick Special, 1968-1972 Buick Sportwagon, 1969 Chevrolet C10 Pickup, 1969-1972 GMC C25/C2500 Pickup, 1969-1971 Jeep J-100, 1969-1971 Jeep J-2500, 1969-1970 Jeep J-2600, 1969-1970 Jeep J-2700, 1969-1970 Jeep J-3500, 1969-1970 Jeep J-3600, 1969-1970 Jeep J-3700, 1969-1970 Jeep J-3800, 1970-1974 Buick Estate Wagon, 1970-1972 Buick GS, 1970 Buick GS 455, 1970-1971 Chevrolet Blazer, 1971-1972 Chevrolet C10 Pickup, 1970-1971 Chevrolet El Camino, 1970-1971 Chevrolet G30 Van, 1970 Ford Fairlane, 1970-1974 Ford Galaxie 500, 1970-1973 Ford Mustang, 1970-1974 Ford Ranch Wagon, 1970-1978 Ford Ranchero, 1970-1976 Ford Torino, 1970-1976 Mercury Cougar, 1970-1971 Mercury Cyclone, 1970-1976 Mercury Montego, 1971-1973 Buick Centurion, 1972 Buick GS 455, 1978-1980 Buick LeSabre, 1979-1981 Buick Riviera, 1971-1972 Chevrolet Bel Air, 1971 Chevrolet Biscayne, 1971 Chevrolet Brookwood, 1971-1972 Chevrolet C10 Suburban, 1971-1973 Chevrolet C20 Pickup, 1971-1972 Chevrolet C20 Suburban, 1971-1972 Chevrolet C30 Pickup, 1971 Chevrolet Camaro, 1971 Chevrolet Caprice, 1971 Chevrolet Chevelle, 1971 Chevrolet Corvette, 1971 Chevrolet G10 Van, 1971 Chevrolet G20 Van, 1971 Chevrolet Impala, 1971-1972 Chevrolet K10 Pickup, 1971-1972 Chevrolet K10 Suburban, 1971-1972 Chevrolet K20 Pickup, 1971-1972 Chevrolet K20 Suburban, 1971-1972 Chevrolet K30 Pickup, 1971 Chevrolet Kingswood, 1971 Chevrolet Monte Carlo, 1971 Chevrolet Nova, 1971 Chevrolet Townsman, 1971-1974 Ford Country Sedan, 1971-1974 Ford Country Squire, 1971-1972 Ford Custom, 1971-1976 Ford Custom 500, 1971-1976 Ford LTD, 1971-1972 GMC C15/C1500 Pickup, 1971 GMC C15/C1500 Suburban, 1971-1972 GMC C25/C2500 Suburban, 1971-1972 GMC C35/C3500 Pickup, 1971 GMC G25/G2500 Van, 1971-1972 GMC G35/G3500 Van, 1971-1972 GMC Jimmy, 1971 GMC K15/K1500 Pickup, 1971 GMC K15/K1500 Suburban, 1971 GMC K25/K2500 Pickup, 1971 GMC K25/K2500 Suburban, 1971 GMC K35/K3500 Pickup, 1971 GMC Sprint, 1971-1974 Mercury Colony Park, 1971-1976 Mercury Marquis, 1971-1974 Mercury Monterey, 1977-1979 Buick Skylark, 1973 Chevrolet G20 Van, 1974 Chevrolet K10 Pickup, 1972-1976 Ford Gran Torino, 1972-1973 Ford Maverick, 1972-1976 Ford Thunderbird, 1972-1973 Mercury Comet, 1972-1974 Pontiac Bonneville, 1972-1974 Pontiac Catalina, 1972-1974 Pontiac Firebird, 1972-1974 Pontiac Grand Prix, 1972-1974 Pontiac Grand Safari, 1972-1974 Pontiac Grandville, 1972-1974 Pontiac LeMans, 1973-1974 Buick Apollo, 1973-1974 Buick Century, 1973-1974 Buick Regal, 1984-1985 Buick Riviera, 1973-1974 Ford F-100, 1973-1974 Ford F-250, 1973-1974 Ford F-350, 1975-1976 Ford Maverick, 1973-1976 Lincoln Continental, 1973-1976 Lincoln Mark IV, 1975-1976 Mercury Comet, 1973-1974 Pontiac Grand Am, 1976-1985 Chevrolet C10 Suburban, 1976-1985 Chevrolet C20 Suburban, 1976-1985 Chevrolet El Camino, 1976-1986 Chevrolet K10 Suburban, 1976-1983 Chevrolet K20 Suburban, 1976-1983 Ford F-100, 1976-1996 Ford F-250, 1976-1997 Ford F-350, 1976-1985 GMC Jimmy, 1974 Pontiac Ventura, 1977-1980 Buick Century, 1977-1981 Buick Regal, 1976-1992 Chevrolet Camaro, 1976-1993 Chevrolet Caprice, 1976-1982 Chevrolet Corvette, 1975-1976 Chevrolet G30, 1976-1985 Chevrolet Impala, 1976-1988 Chevrolet Monte Carlo, 1975-1976 Chevrolet Monza, 1976-1979 Chevrolet Nova, 1975-1976 Ford Elite, 1975-1976 Ford Granada, 1975-1976 Ford Mustang II, 1975-1978 GMC C25 Suburban, 1975-1978 GMC K15 Suburban, 1976-1977 GMC Sprint, 1975-1976 Mercury Grand Marquis, 1975-1976 Mercury Monarch, 1978-1986 Pontiac Firebird, 1978-1980 Pontiac LeMans, 1976-1985 Chevrolet C10, 1976-1985 Chevrolet C20, 1976-1980 Chevrolet C30, 1984 Chevrolet Corvette, 1976-1985 Chevrolet G10, 1976-1985 Chevrolet G20, 1978-1985 Chevrolet G30, 1976-1985 Chevrolet K10, 1976-1985 Chevrolet K20, 1976-1985 Chevrolet K5 Blazer, 1976 Chevrolet Laguna, 1976-1983 Chevrolet Malibu, 1976-1977 Dodge B100, 1976-1977 Dodge B200, 1976-1977 Dodge B300, 1976-1977 Dodge D100, 1976-1977 Dodge D200, 1976-1977 Dodge D300, 1976-1977 Dodge Ramcharger, 1976-1977 Dodge W100, 1976-1977 Dodge W200, 1976-1977 Dodge W300, 1976-1985 Ford Bronco, 1976-1983 Ford E-100 Econoline, 1976-1983 Ford E-100 Econoline Club Wagon, 1976-1985 Ford E-250 Econoline, 1976-1991 Ford E-250 Econoline Club Wagon, 1976-1996 Ford E-350 Econoline, 1976-1985 Ford F-150, 1976-1978 GMC C15, 1976-1978 GMC C15 Suburban, 1976-1978 GMC C25, 1976-1978 GMC G15, 1976-1978 GMC G25, 1976-1978 GMC K15, 1976-1978 GMC K25, 1976-1978 GMC K25 Suburban, 1976-1977 Plymouth PB100, 1976-1977 Plymouth PB200, 1976-1977 Plymouth Trailduster, 1988-1992 Pontiac Firebird, 1977 Pontiac Ventura, 1984-1985 Buick Regal, 1977-1980 Chevrolet K30, 1979 Chevrolet Monza, 1977 Dodge D150, 1987-1996 Ford Bronco, 1977-1985 Ford E-150 Econoline, 1977-1985 Ford E-150 Econoline Club Wagon, 1987-1991 Ford E-250 Econoline, 1977-1996 Ford E-350 Econoline Club Wagon, 1987-1996 Ford F-150, 1983-1986 Ford LTD, 1977 Oldsmobile Custom Cruiser, 1977 Oldsmobile Delta 88, 1977-1979 Oldsmobile Omega, 1977-1979 Oldsmobile Starfire, 1980 Pontiac Grand Prix, 1977-1979 Pontiac Phoenix, 1987-1996 Ford E-150 Econoline, 1987-1996 Ford E-150 Econoline Club Wagon, 1978-1980 Oldsmobile Cutlass, 1978-1980 Oldsmobile Cutlass Calais, 1978-1980 Oldsmobile Cutlass Salon, 1978-1980 Oldsmobile Cutlass Supreme, 1980 Pontiac Grand Am, 1978-1980 Pontiac Grand LeMans, 1988-1992 Chevrolet Corvette, 1983-1984 Ford Mustang, 1979-1985 GMC C1500, 1979-1985 GMC C1500 Suburban, 1979-1985 GMC C2500, 1979-1985 GMC C2500 Suburban, 1979-1985 GMC G1500, 1979-1985 GMC G2500, 1979-1985 GMC K1500, 1979-1985 GMC K1500 Suburban, 1979-1985 GMC K2500, 1979-1983 GMC K2500 Suburban, 1983-1987 Pontiac Grand Prix, 1980 Oldsmobile Cutlass Cruiser, 1983-1986 Pontiac Bonneville, 1982 Oldsmobile Cutlass Cruiser, 1983-1986 Pontiac Parisienne, 1984-1986 Jeep Cherokee, 1984-1986 Jeep Wagoneer, 1984-1985 Mercury Capri, 1991-1993 Mercury Cougar, 1986 Mercury Grand Marquis, 1991-1993 Ford Thunderbird, 1986 Jeep Comanche, 1988-1991 Ford LTD Crown Victoria, 1995 Ford Mustang, 1991-1992 Oldsmobile Custom Cruiser, 1991-1992 Cadillac Brougham, 1993 Cadillac Commercial Chassis, 1993 Cadillac Fleetwood, 1997 Ford F-250 HD