Features and Benefits: - Tap is designed for aluminum heads only
- Set includes 4 inserts and thread locking compound
- This kit repairs damaged 14mm spark plug threads
It's simple to use, simply open spark plug hole with reamer/tap. Screw insert onto spark plug. Use spark plug socket to install spark plug and insert. Remove spark plug and check that insert is properly seated. Set includes 1 each of 4 inserts (3/8", 7/16", 1/2", and 3/4" reach) and thread locking compound.
