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ACCEL 0576S-4 U-Groove Spark Plug Header PlugSpark Plug U-Groove Spark Plug Header Plug U-Groove Spark Plug Header Plug; 14mm Thread; .460 in. Reach; Heat Range 6; Tapered Seat; 5/8 Hex; Projected Tip; Resistor; 4 Pack; SPECIFICATIONS:
FEATURES:
ACCEL's patented race proven spark plugs in a Shorty configuration. The overall length has been reduced 3/16 in to 3/8 in (depending on the specific spark plug) to gain critical air gap between the spark plug boot and the exhaust manifold or header tube. This helps eliminate burning the spark plug boot or dimpling the header tube. The shorter spark plug length also can make it easier to install an remove the spark plugs in certain applications where there is not a lot of room to fit a socket or move a wrench around. ACCEL Shorty Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL Shorty Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL Shorty Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention. 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. 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, 1971-1977 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, 1972-1973 Ford E-100 Econoline, 1972-1973 Ford E-200 Econoline, 1972-1973 Ford E-300 Econoline, 1972-1976 Ford Gran Torino, 1972-1973 Ford Maverick, 1972-1978 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 Pontiac LeMans, 1973-1974 Pontiac Ventura, 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 E-100 Econoline, 1976-1996 Ford F-250, 1976-1997 Ford F-350, 1981-1984 Ford Thunderbird, 1976-1985 GMC Jimmy, 1978-1980 Pontiac LeMans, 1977-1980 Buick Century, 1977-1981 Buick Regal, 1976-1992 Chevrolet Camaro, 1976-1993 Chevrolet Caprice, 1976-1985 Chevrolet Impala, 1976-1988 Chevrolet Monte Carlo, 1975-1976 Chevrolet Monza, 1976-1979 Chevrolet Nova, 1975-1976 Ford Elite, 1977-1979 Ford F-100, 1975-1976 Ford Granada, 1981-1986 Ford LTD, 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, 1977 Pontiac Ventura, 1976-1985 Chevrolet C10, 1976-1985 Chevrolet C20, 1976 Chevrolet C30, 1976-1985 Chevrolet G10, 1976-1985 Chevrolet G20, 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, 1976-1983 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, 1984-1985 Buick Regal, 1978 Chevrolet C30, 1979 Chevrolet Monza, 1977 Dodge D150, 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 Ford F-150, 1981-1984 Ford Mustang, 1977 Oldsmobile Custom Cruiser, 1977 Oldsmobile Delta 88, 1977-1979 Oldsmobile Omega, 1977-1979 Oldsmobile Starfire, 1980 Pontiac Grand Prix, 1977-1979 Pontiac Phoenix, 1978-1985 Ford Bronco, 1987-1996 Ford E-150 Econoline, 1987-1996 Ford E-150 Econoline Club Wagon, 1985 Mercury Cougar, 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, 1980 Chevrolet Corvette, 1987 Ford Bronco, 1981 Ford Granada, 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, 1991-1993 Ford Thunderbird, 1980 Oldsmobile Cutlass Cruiser, 1983-1986 Pontiac Bonneville, 1981-1985 Chevrolet G30, 1981-1982 Ford Fairmont, 1982 Oldsmobile Cutlass Cruiser, 1991-1993 Mercury Cougar, 1985-1986 Mercury Grand Marquis, 1983-1986 Pontiac Parisienne, 1984-1985 GMC G3500, 1984-1986 Jeep Cherokee, 1984-1986 Jeep Wagoneer, 1984 Mercury Capri, 1985 Lincoln Mark VII, 1986 Jeep Comanche, 1995 Ford Mustang, 1988-1991 Ford LTD Crown Victoria, 1991-1992 Oldsmobile Custom Cruiser, 1991-1992 Cadillac Brougham, 1993 Cadillac Commercial Chassis, 1993 Cadillac Fleetwood, 1997 Ford F-250 HD |
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| We carry performance and replacement parts, along with every consumer item you’ll ever need. Take advantage of our huge distribution network in the United States and Canada, we're able to ship direct to you, so we can get your order into your hands faster than the competition. Our goal is to exceed your expectations. And we’ve built a system to do just that. |  |
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Our company combines hard-core drag racers and auto enthusiasts with tech-savvy engineers and developers — all car lovers — to create a webstore that gives you an unmatched shopping experience — and we deliver it fast. Very fast. Unlike traditional brick-and-mortar retail outlets, our inventory isn’t limited to what we can pack into a storefront or what a counter clerk may be able to find. While they can only offer you hundreds of items, you’re just a few clicks away from millions of parts when you shop PartsHawk — all in stock and ready to ship. And since we don’t own any of those expensive stores, we can offer our parts for less, and that saves you money on every part, every day. A better shopping experience, for every product for every car, whenever you order. |
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SHIPPING POLICY
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RETURN POLICY PartsHawk stands behind every item we sell. Occasionally, there may be an issue with your item or your order and we will do our best to ensure you are 100% satisfied. We offer a 30 day exchange or refund policy on all orders. Within 30 days or receipt of your order you may request a return for either an exchange or a refund. All product returns must be in the original packaging, have not been used, installed or damaged due to improper installation. All parts, hardware, documents and instructions must be included in the returns. PartsHawk will also support the manufacture’s warranty for all item during the warranty period offered by the manufacturer. |
| Carriers and Ship Methods: We ship most packages to the contiguous 48 states using USPS, UPS or FedEx. Upon shipping we determine the closest distribution center to you and the quickest method. | Note: We do not accept returns for Car Computers, Performance tuners or Vehicle Programmers. If the product is defective we will exchange the unit for the exact item. No new returns on these products. |
| Large Parcel Items: For large items (bumpers, side steps, bed covers, etc.), these may be shipped through a truck delivery service. If you are having issues tracking your package please contact us so we can assist you. |
Return Check List
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| GLOBAL SHIPPING PROGRAM
How does shipping work? Placing an order outside the US is easy! In fact, eBay handles the entire transaction for you once we have shipped the product to their warehouse in Kentucky. Once the order has shipped you will receive a tracking number from our warehouse to Kentucky and then another tracking number from Kentucky to you. Additional Charges and Fees Additional shipping, duties and taxes will be calculated by eBay during check out. |
Outside the US? Don't worry, PartsHawk is currently shipping to over 100 countries
Check the Shipping and Payments section above to see if this item can be shipped to you. |
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| What if my order shows shipped but the package is not moving?
At times there is a delay in the carrier’s tracking for updates. Please allow up to 24 hours for your tracking to update. If you still do not see any movement, please contact our Customer Service Department and we will be happy to assist. |
What if I am not available when the carrier tries to deliver?
If there is no response when the package arrives, the driver may leave the package nearest to the street or make a second delivery attempt on the next business day. Please check your tracking info as it will let you know the next steps for delivery attempt. |
How can I get a copy of my receipt or invoice?
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What if the tracking number is not working after 24 hours? Depending on the size of your item, it could be shipped with a truck carrier and will require you to be present at time of delivery. Please feel free to reach out to us and we will provide additional details. |
I have special delivery instructions (i.e. Leave by back door, leave with neighbor, place in the planter on the left of my garage, etc.) We recommend leaving a note for the carrier on the door nearest to the street as we do not have a way to communicate those requests for you. |
Why did my item ship from a different location?
Many parts are stocked in more than one warehouse location. As a result your order may ship from a location other than the location shown in the listing. In most cases the shipping location will be closer to delivery address as we always try to ship from the closest warehouse to minimize transit times. In some circumstances intraday sales and other inventory changes may result in your item being shipped from a location further from your delivery address. |
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Do I have to be there to sign for my package? If your order is over $250 there is a possibility it was shipped with a signature required option. The easiest way to check is to locate the tracking number for your order and open on the carrier’s website. There is no additional cost to you for this service. |
Can I pickup my part/order from your warehouse? Sorry, we do not offer the pickup in warehouse option as our warehouses do not have public access |
How do I know if this part will fit my vehicle? Check the vehicle compatibility guide above or just reach out to us. Updated 10.19.2023 |
