SPARK PLUG- 4/BOX

Resistor: No Electrode Type: OEM Electrode Core Material: Copper Electrode Tip Material: Nickel Alloy Insulator Type: Projected Thread Size (IN): 0.551 Inch Thread Size (MM): 14 Millimeter Reach: 3/8 Inch Seat Type: Gasket Wrench Diameter: 13/16 Inch Quantity: Single Copper-Glass Seal Bonds Insulator Terminal Post Center Electrode Together; Assures Full Required Voltage At Spark Gap; Gas-Tight Seal (100 Percent Leak Proof) Multi-Rib Insulator Reduces Danger Of Flash-Over One-Piece Terminal Post Adds StrengthCold-Formed Steel Shell Precision Rolled Threads Full Copper Core Electrode Provides Better Performance In All Conditions Guaranteed To Deliver Quick Starts Good Fuel Economy And Smooth Acceleration Limited 90 Day Warranty