• Shorty Spark Plug: No
  • Resistor: No
  • Manufacturer Heat Range: 11
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKR5671A-11
NGKNGK
R5671A-9 Racing Spark PlugsSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: No
  • Manufacturer Heat Range: 9
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKR5671A-9
  • Shorty Spark Plug: No
  • Resistor: No
  • Manufacturer Heat Range: 7
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKR5671A-7
NGKNGK
R5671A-8 Racing Spark PlugsSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: No
  • Manufacturer Heat Range: 8
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKR5671A-8
NGKNGK
TR55 Racing Spark PlugSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: Yes
  • Manufacturer Heat Range: 5
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKTR55
AutoliteAutolite
3922 Spark Plugs, 14mm Thread, 0.750 Reach, EachSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: Yes
  • Manufacturer Heat Range: 2
  • Electrode Core Material: Copper
  • Electrode Tip Material: Copper
Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. ...
Part No: AUT3922
AutoliteAutolite
3924 Spark Plugs, 14mm Thread, 0.750 Reach, EachSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: Yes
  • Manufacturer Heat Range: 4
  • Electrode Core Material: Copper
  • Electrode Tip Material: Copper
Autolite copper core spark plugs feature a cold-formed steel shell with precision-rolled threads, a full copper core electrode for better performance, and a one-piece terminal post to add strength. The ignition plugs use a copper-glass seal that bonds the insulator and terminal post center electrode together. This ensures full voltage at the spark gap and a 100 percent leak-proof, gas-tight seal. ...
Part No: AUT3924
NGKNGK
R5671A-10 Racing Spark PlugSpark Plug, Racing, Gasket Seat, 14mm Thread, .750 in. Reach, Non-Resistor, Each
  • Shorty Spark Plug: No
  • Resistor: No
  • Manufacturer Heat Range: 10
  • Electrode Core Material: Copper
  • Electrode Tip Material: Nickel alloy
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 ...
Part No: NGKR5671A-10