− Decrease quantity for Spark Plug, Standard, 10mm Thread, .750 in. Reach, 5/8 in. Hex, Gasket Seat, Non-Resistor, Each Quantity + Increase quantity for Spark Plug, Standard, 10mm Thread, .750 in. Reach, 5/8 in. Hex, Gasket Seat, Non-Resistor, Each Add to cart