Cal-Van Tools Replacement Inserts for 38900 14mm Insert 389-100

Features and Benefits:

• High quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer.
• For use on 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines
• For use on years 1996 to 2003.
• Part No. 389-100 Replacement Inserts
• spark plug size: m14-1.25