14mm Cylinder Head Rethreader Kit: H

2125 14mm Cylinder Head Rethreader Kit Repairs damaged 14mm spark plug threads. 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. Tap is designed for aluminum heads only. Caution: Wear safety goggles.