GearWrench 14mm Cylinder Head Rethreader Kit - 2125
- Repair damaged 14mm spark plug threads by opening hole with a reamer/tap and screwing insert onto the spark plug
- Use spark plug socket to install spark plug and insert
- Remove 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
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