NGK Laser Iridium Spark Plugs - Set of 4 - Platinum Performance for Buick Cadillac Chevrolet - Improve Engine Power & Fuel Efficiency for Smooth Driving Experience

Kit Content:4 x NGK Spark Plugs Laser Iridium Fine WireItem Description:Thread Diameter(mm): 14.00Center Electrode Core Material: Copper CoreGround Electrode Quantity: 1Center Electrode Tip Material: IridiumReach(in): .708Ground Electrode Core Material: Nickel CoreInsulator Height(mm): 53.00Ground Configuration: StandardResistance(Ohms): 5000Ground Electrode Tip Design: StandardSeat Type: TaperedManufacturer Heat Range: 5Pre-Gap Size(in): .044Hex Size(in): 5/8