NGK Spark Plugs
NGK Spark Plugs

NGK Spark Plugs

Listed Below are the plugs we stock:


NGK R5671A-10 (14MM 5/8 Hex-Gasket 3/4 R)

NGK R5672A-9 (14MM 5/8 Hex-Gasket 3/4 R)

NGK R5674-8 (14MM 5/8 Hex-Gasket-.460 Reach)

NGK R5673-8 (14MM  5/8 Hex-TAPERED .46 R)

NGK R5724-8 (14MM 5/8 Hex-TAPERED .708 R)CRATE PLUGS

All NGK Racing Spark Plugs feature electrode materials and configurations as follows:

• Electrode materials - Many use precious metals such as platinum or gold/palladium for greater durability and lower voltage requirements.


• Electrode configurations - Fine-wire center electrodes provide better sparking and enhanced ignitability. Fine-wire ground electrodes further improve the ignitability of the plug.


• Insulator configurations - Special configurations are used for the insulator noses to improve throttle response.


  • What is the heat range of spark plugs?
    Lower numbers indicate a hotter type, higher number indicate a colder type.