The NGK BPR4HS is a standard resistor spark plug for the Yamaha PW50. NGK's standard plugs are constructed for longer life and optimum performance.
Features
- Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
- Corrugated ribs prevent flashover
- Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer
- Copper core aids in heat removal
- Triple seals prevent leakage
Specifications
- Thread size: 14mm
- Thread pitch: 1.25mm
- Seat type: Gasket
- Resistor: Yes (5K Ohm)
- Reach: 12.7mm (1/2")
- Hex size: 13/16" (21mm)
- Terminal type: Solid
- Gap: .028" (0.7mm)
- Centre electrode: Nickel, 2.5mm, projected
- Ground electrode: Nickel, standard, 1
Fitment
