Compatible with Ford Years 1996 to 2003 Please make sure the car model matches our products before purchasing. Designed to aide in repairing Two Valve Modular Cylinders Heads. A quality, foolproof repair system that is cost effective and fast. Our spark plug thread repair kit tapped M141.25 Inserts compatible with ford years 19962003, Part No. 389100 Replacement Inserts. The kit is used on 4.6L, 5.4L and 6.8 V10 Two Valve Engines. Package Including Our spark plug repair kit including the M141.25 Inserts*8, Twist Drill, Screw Tap, Line up Guide, Cylinder Leak Tester, whats special is that we have two snap iron pieces. We offer two instructions, one is fixed in the packaging box and will not be lost, the other can be taken out for review, very flexible. Designed to Meet Your Specific Needs Our spark plug cylinder repair kit featured complete and excellent quality. The drills, taps and line up guide are made of high quality thickened steel, individual pieces are highly tempered, with strong strength, sharpness and maximum durability. 8*M141.25 inserts has high hardness and the surface is also treated with black oxidation to prevent corrosion and rust, more robust than ordinary helicoils. Professional Thread Repair Kit This 38900 thread repair tool addressed a regularly occurs damaged heads from blown spark plugs, replacing inserts. This cylinder repair tools is complete, specialty design, precise and perfectly adapted. The helicoil kit of choice for tool enthusiasts and industry professionals alike. PS The rotary head of screw tap, twist drill usually needs to be coated with antirust oil for maintenance, if it is not used for a long time, antirust oil should be applied before storage to prevent rust during longterm storage. Customer Service Please contact us if you have any problem. We have a professional customer service to solve the problem for you at first time.