Ngk V-Power Spark Plug Gr4 (6 Pack) Compatible With Jeep J-2600 1972-1973 4.2L/258

Ngk V-Power Spark Plugs Offer Economical Performance For Nearly Any Automotive Application-And They’Re The Only Plugs With Ngk’S V-Groove Technology. These Plugs Enhance Ignitability, Lower The Voltage Requirements Of Ignition Systems, And Have Strong Anti-Fouling Characteristics, While Improving Fuel Mileage And Acceleration Performance. The V-Power Plugs Are Also Highly Durable Against Electrical And Chemical Wear, Making Them Long-Life Replacement Plugs. Because Of The V-Groove, The Spark Occurs At The Edge Of The Center Electrode-So Heat Is Not Absorbed By The Electrode Itself. This Allows The Flame Kernel To Expand Quickly And Efficiently For A Complete Burn And Great Performance. Shorty Spark Plug: No. Resistor: Yes. Manufacturer Heat Range: 4. Electrode Tip Material: Nickel Alloy. 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.