What's firing your engine? NGK racing spark plugs are built to withstand the severe mechanical and thermal shock associated with high-revving, high-compression engines. NGK racing plugs feature electrode materials precious metals like platinum or gold/palladium for greater durability and low voltage requirements. Fine-wire center and ground electrodes provide better sparking and enhanced ignitability. And, the special arrangement of insulator noses improves throttle response! So, what's firing your race car to the winner's circle? Whether you're a weekend warrior or an expert racer, rocket your way to victory with racing spark plugs from NGK the people who spark winners!
- Resistor:
- Yes
- Manufacturer Heat Range:
- 5
- Electrode Core Material:
- Copper
- Electrode Tip Material:
- Nickel alloy
- Insulator Type:
- Projected
- Thread Size:
- 14mm
- Reach (in.):
- 0.691 in.
- Reach (mm):
- N/A
- Seat Style:
- Tapered
- Wrench Diameter (in.):
- 5/8 in.
- Wrench Diameter (mm):
- 16 mm
- Ground Strap Quantity:
- One
- Shorty:
- No
- Quantity:
- Sold individually.
- Short Part Number:
- 3951
