AR-3924 Race Plug
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AUTOLITEPART NUMBER: 417-AR3924

AR-3924 Race Plug

$599
ShippingShips on Sep 08, 2026
Lowest PriceLowest Price Guarantee

5/8'' Hex, 14mm Thread, Gasket Seat - .750'' Reach
    AR-3924 Race Plug
    Autolite Race Plugs feature the latest plug design technology. Their multi-rib insulator, copper center electrode, large cut back ground electrode (covered in nickel plating and sealed inside a longer insulator to resist carbon fouling), and double terminated suppressor provide the best EMI suppression.

    NOTE: Plugs are priced individually but may only be ordered in sets of 4.
    Spark Plug Heat Ranges & Applications

Part TypeSpark Plug
Product LineAutolite Race Series Spark Plugs
BrandAUTOLITE
Package Height1.2
Package Width3.6
Package Length4.1
Weight0.11 PG
Part CategoryPerformance Parts
Seat StyleGasket
Reach (In)3/4"
Center Electrode DesignStandard / Regular
Insulator TypeMid Projection
Thread Size14mm X 1.25
Center Electrode Core MaterialCopper
Drive Size5/8" (16mm)
Gap- Factory Preset.044"/1.1mm
Center Electrode Tip MaterialCopper
Insulator MaterialCeramic
Part FitmentUniversal
ResistorResistor
Vendor Part NumberAR3924
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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