Below are some helpful tips on spark plug installation and how to gap your spark plug’s. It is very important to have the proper gap for your application to ensure optimum performance and reliability.

Plug gap recommendations

  • 300-500HP = 0.032-0.035
  • 500-700HP = 0.029-0.031
  • 700HP +      = 0.026-0.028

Here is a quick video on how to gap your spark plugs

Spark plug installation

1. Confirm that the thread reach of the spark plug is the right one for your engine.

2. Remove any dirt or debris at the gasket seal of the cylinder head.

3. Tighten the spark plug finger tight until the gasket reaches the cylinder head, then tighten about 1/16 turn more with a spark plug wrench.