Listed Below are the plugs we stock:
NGK R5671A-10 - 14MM - 5/8" Hex - 3/4" Reach - (Heat Range 10)
NGK R5672A-9 - 14MM - 5/8" Hex - 3/4" Reach - (Heat Range 9)
NGK R5673-8 - 14MM - 5/8" Hex - Tapered - .460 Reach - (Heat Range 8)
NGK R5674-8 - 14MM - 5/8" Hex -Non-Tapered - .460 Reach - (Heat Range 8)
NGK R5724-8 - 14mm - 5/8" Hex - Tapered - .708 Reach - (602/604 Crate)
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.