Gap Size 0.040" (Mercruiser Spec tag on engine may call for 0.035")
Ground Electrode Core Material Nickel AlloyCenter Electrode Core Material CopperCenter Electrode Tip Material Nickel AlloyGround Electrode Quantity 1Hex Size 13/16inManufacturer Heat Range 3Approximate Resistor Value 2-12k ohmsSeat Type TaperedReach 0.43 INReach 10.95 MMThread Diameter 14 MM