Autolite Genuine Oem Spark Plug - 3924

Genuine Autolite replacement part. Electrode Tip Material: Resistor, Reach: 3/4 in, Resistor: Suppressor, Seat Type: Gasket. Thread Diameter: 14 mm, Tip Configuration: Power, Wrench Diameter: 5/8 in. Power tip extends further into the combustion chamber to aid in self-cleaning, reducing fouling at low rpms and pre-ignition at high speeds. Traditional nickel electrodes. Copper core improves resistance to fouling.