Ngk G-Power Platinum Spark Plug Gr4Gp (6 Pack) Compatible With Jeep Cj7 1976-1977 4.2L/258

These G-Power Platinum Spark Plugs Deliver The Power And Quality That You Expect From Ngk. The Fine Pure-Platinum Electrode Tip Remains Virtually Unchanged And Reaches Self-Cleaning Temperatures To Deliver Longer Durability And Optimum Performance. Compared To Conventional Plugs, G-Power Plugs Deliver Better Starts, Superior Acceleration, And Greater Fuel Economy. Trivalent Metal Plating Provides Superior Anti-Corrosion And Anti-Seizing Properties. Corrugated Ribs Prevent Flashover. Trapezoid Cut Ground Electrode Reduces Quenching. Shorty Spark Plug: No. Resistor: Yes. Manufacturer Heat Range: 4. Electrode Tip Material: Platinum. Electrode Core Material: Copper. Insulator Type: Projected. Spark Plug Thread Size: 14Mm. Spark Plug Reach: 0.750 In. Spark Plug Seat Style: Gasket. Wrench Diameter: 13/16 In. Ground Strap Quantity: One.