Part Number 389-100 38900 Specifications: Inside Diameter: 14 x 1.25mm Outside Diameter: 0.75 -16 Features: Designed to aide in repairing Ford Modular Cylinders Heads. Fit For 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines A quality foolproof repair system that is cost effective and fast. High quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer. Total labor time as short as 25 min. Fitment: For use on 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines For use on years 1996 to 2003. Package Include： 4x Spark Plug Port Insert as picture show.

Part Number 389-100 38900 Specifications: Inside Diameter: 14 x 1.25mm Outside Diameter: 0.75 -16 Features: Designed to aide in repairing Ford Modular Cylinders Heads. Fit For 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines A quality foolproof repair system that is cost effective and fast. High quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer. Total labor time as short as 25 min. Fitment: For use on 4.6L, 5.4L and 6.8 V-10 Ford Triton Two Valve Engines For use on years 1996 to 2003. Package Include： 4x Spark Plug Port Insert as picture show.