Genuine NGK 2314 Iridium IX Spark Plug

Shell
Thread Diameter: 14mm
Thread Pitch: 1.25mm
Seat Type: Tapered
Reach: 25mm (1")
Hex Size: 5/8" (16mm)
Terminal Type: Solid
Overall Height: ISO
Gap: .050" (1.3mm)

Center Electrode
Material: Iridium
Type: Fine Wire
Size: 0.6mm
Projection: Extended Projection

Ground Electrode
Material: Nickel
Type: Standard
Shape: Taper Cut

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.