NGK Iridium Spark Plugs - Box of 4
For use with Honda B, D, K, H, F platforms; and others. Check your recommended spark plug type before ordering for other engine types.
Choose your heat range in the drop down menu
Heat Range 7 - Typically used for N/A and mild boosted engines up to 400HP and pump fuel
Heat Range 8 - 400-550 HP Boosted and Nitrous engines. Pump, E85, Race fuel
Heat Range 9 - 550HP+ Boosted with all fuels