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    Accel U-Groove Spark Plug, Header Plug, Pack of 8


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    Exact Fit May Not Fit Doesn't Fit for your

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    Save 25% on 4 or more Autolite Iridium Spark Plugs with the purchase of any advertised Full Synthetic or Full Synthetic High Mileage Oil Change Bundle. See rebates page for additional offers.
    • Product Details

      Part No. 8199

      Warranty Details (90 DAY REPLACEMENT IF DEFECTIVE)

      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.

      Product Features:

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

    • Specifications
      • Center Electrode Core Material:Copper
        Electrode Core Material:Copper nickel alloy
        Electrode Tip Material:Projected Tip
        Ground Electrode Core Material:Nickel Alloy
        Ground Electrode Quantity:1
        Hex Size:5/8
        Insulator Type:Projected
        Length:2.64
        Manufacturer Heat Range:Hot
        Resistor:Yes
        Resistor Type:Resistor Plug
        Rib Configuration:5-rib configuration
        Sealing Type:Copper-glass seal
        Seat Type:Tapered
        Side Electrode:No
        Terminal Top Type:Threaded
        Thread Diameter:14 mm
        Tip Configuration:U-Groove
        Type:Standard
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