The NGK nickel spark plug has the following features:
- Thread: M18 x 1.5
- Thread length: 11 mm
- Hex: 21 mm
- Central electrode: 2.5 mm nickel
- Ground electrode: nickel
- Conical seat
- Solid terminal
- Resistor: 1 kΩ
- Heat rating: 6
- Electrode gap: 0.9 mm
It is compatible with motorcycles, cars, boats, and small engines.