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KD Tools 14 Mm Cylinder Head Re-threader Kit

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Tap is designed for aluminum heads only
Set includes 4 inserts and thread locking compound
This kit repairs damaged 14mm spark plug threads

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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 In., 7/16 In., 1/2 In., and 3/4 In. reach) and thread locking compound.

Tap is designed for aluminum heads only
Set includes 4 inserts and thread locking compound
This kit repairs damaged 14mm spark plug threads
Made of steel