Genuine NGK 2771 V-Power Spark Plug UR5

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Reach: 11.6mm (.460")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .039" (1.0mm)

Center Electrode
Material: Nickel
Type: V-Cut
Size: 2.5mm
Projection: Projected

Ground Electrode
Material: Nickel
Type: Standard

Specifications
Resistor: Yes
Resistor Value: 5k Ohm
Heat Range: 5
Torque Specs: Cast Iron: 10.8-18 lb. ft. Aluminum: 7.2-14.5 lb. ft.