Genuine Authentic NGK 1275 Nickel Spark Plug CR8E

Shell
Thread Diameter:10mm
Thread Pitch:1.0mm
Seat Type: Gasket
Reach: 19mm (3/4")
Hex Size: 5/8" (16mm)
Terminal Type: Threaded Stud
Overall Height: ISO
Gap: .031" (0.8mm)

Center Electrode
Material: Nickel
Type: Standard
Size: 2.5mm
Projection: Non-Projected

Ground Electrode
Material: Nickel
Type: Standard

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 8
Torque Specs: Cast Iron: 7.2-10.8 lb. ft. Aluminum: 7.2-8.7 lb. ft.