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Accel U-Groove Spark Plug Header Plug 0576S-4

Accel U-Groove Spark Plug Header Plug 0576S-4
$31.99 ea
NEWARRIVING SOONEstimated Ship Date 05/21/2021 (If Ordered Today)
Model: 3942415
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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U-Groove Spark Plug Header Plug, 14mm Thread, .460 in. Reach, Heat Range 6, Tapered Seat, 5/8 Hex, Projected Tip, Resistor, 4 Pack.

  • Shorty Spark Plugs For Tubular Exhaust Headers
  • Eliminates Dimpling Headers For Added Clearance
  • Improves Spark Plug Access To Fit Socket Or Wrench
  • Shorter Overall Plug Length Vs. OE Style Plug
  • Copper Core Center Electrode
  • Projected Tip
  • Helps Eliminate Burned Spark Plug Boots
  • Shorty Header Spark Plug

ACCEL U-groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy, less fouling. Purified alumina insulator prevents arcing. Machine rolled threads protect heads.

Holley Performance Emission Code 2: This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part. The following vehicles are considered Emissions Controlled Vehicles: 1966 and newer U.S. manufactured California Certified vehicles/1968 and newer U.S. manufactured Federally Certified vehicles/1968 and newer Foreign manufactured vehicle

About Accel Performance Group

For more than 40 years, ACCEL has been a leader in performance fuel and ignition systems, proving itself on the racetracks and drag strips of the world ? and on the street. With an ever-expanding line of SuperCoils and all the spark plug wires, tune-up kits, and fuel injectors hot rodders have trusted and relied on for years, ACCEL is constantly developing innovative new products designed to push power, speed, and performance to match advancements in automotive technology. Now part of Holley Performance, ACCEL offers a comprehensive selection of performance products, including coils, digital fuel injection systems, fuel injectors, distributors, caps, rotors, ignition wires, spark plugs.

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years Engine Fitment Notes
Buick Skylark 1968 6.6L / 400 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1969 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1970 7.5L / 455 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1971 7.5L / 455 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1972 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.040 in. Plug Gap
Buick Skylark 1977 5.7L / 350 / V8
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1978 5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Skylark 1979 5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Special 1968 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Special 1969 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Sportwagon 1968 6.6L / 400 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.040 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Sportwagon 1969 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Sportwagon 1970 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Sportwagon 1971 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Buick Sportwagon 1972 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.040 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Chevelle 1971 7.4L / 454 / V8
6.6L / 402 / V8
5.0L / 307 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino Base 1970 6.6L / 402 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino Base 1971 6.6L / 402 / V8
5.7L / 350 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino Custom 1970 6.6L / 402 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino Custom 1971 7.4L / 454 / V8
6.6L / 402 / V8
5.7L / 350 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino SS 1970 6.6L / 402 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino SS 1971 6.6L / 402 / V8
5.7L / 350 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1976 5.0L / 305 / V8
5.7L / 350 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1977 5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1978 3.3L / 200 / V6
5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1979 3.3L / 200 / V6
5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1980 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet El Camino 1981 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet El Camino 1982 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet El Camino 1983 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet El Camino 1984 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet El Camino 1985 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Malibu 1976 5.7L / 350 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Malibu 1977 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Malibu 1978 3.3L / 200 / V6
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Malibu 1979 3.3L / 200 / V6
5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Chevrolet Malibu 1980 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet Malibu 1981 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet Malibu 1982 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Chevrolet Malibu 1983 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap
Oldsmobile Cutlass 1978 5.0L / 305 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Oldsmobile Cutlass 1979 5.7L / 350 / V8
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Oldsmobile Cutlass 1980 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1972 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1973 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1974 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1980 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1983 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1984 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1985 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1986 5.0L / 305 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac Grand Prix 1987 4.3L / 262 / V6 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.060 in. Plug Gap
Pontiac LeMans Safari 1978 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans Safari 1979 5.7L / 350 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans Sport 1976 7.5L / 455 / V8 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans 1972 7.5L / 455 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans 1973 7.5L / 455 / V8
6.6L / 400 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans 1974 7.5L / 455 / V8
6.6L / 400 / V8
5.7L / 350 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
Pontiac LeMans 1980 3.8L / 231 / V6
3.8L / 229 / V6
5.0L / 305 / V8
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.030 in. Plug Gap
14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack;0.045 in. Plug Gap

Specifications:

Assembly Method Tapered
Color White
Gap Size 0.032 in.
Hex Size 0.625 in.
Package Quantity 4
Part Type Spark Plug
Projected Tip Yes
Reach 0.460 in.
Resistor Yes
Thread Size 14mm
Warranty Limited 90 Day Warranty TX

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