Set of 4 Genuine NGK 4339 Nickel Spark Plugs Standard DCPR8E Removable Tip

Center Electrode Core Material: Copper Core
Center Electrode Material: Nickel
Gap: 0.028"
Ground Configuration: Standard
Ground Electrode Core Material: Nickel Core
Ground Electrode Material: Nickel
Ground Electrode Quantity: 1
Ground Electrode Tip Design: Standard
Heat Range: 8
Hex Size: 0.625"
Hex Size: 16 mm
Insulator Height: 50 mm
Longevity: 30k Miles
Overall Height: ISO
Resistance: 5 kOhm
Spark Plug Seat Style: Flat
Thread Diameter: 12 mm
Thread Reach: 0.75"
Thread Size: 0.472"