NGK Iridium IX Spark Plugs - Set of 8 Fine Wire Plugs Compatible with Chevrolet, GMC, Cadillac - High Performance for Smooth Engine Start & Fuel Efficiency

Kit Content:8 x NGK Spark Plugs Iridium IX Fine WireItem Description:Thread Diameter(mm): 14.00Center Electrode Core Material: Copper CoreCenter Electrode Tip Material: IridiumGround Electrode Quantity: 1Pre-Gap Size(in): .044Hex Size(in): 5/8Ground Electrode Tip Design: Taper CutManufacturer Heat Range: 5Seat Type: TaperedResistance(Ohms): 5000Ground Electrode Core Material: Nickel CoreReach(mm): 25.00Ground Configuration: StandardInsulator Height(mm): 53.00