•  Heli-Coil inserts are used to repair tapped holes which have been stripped or damaged due to wear, corrosion, and over-torque. They are available in M12 and M14 sizes and for any engine.

•  Heli-Coils are the preferred method of repair specified by virtually all US and foreign vehicle manufacturers.

•  Each spark plug thread repair kit contains a piloted reamer/tap (no drilling necessary), an installation tool, and several insert lengths to accommodate all spark plug reaches.