38900 Two Valve Tool Kit for Ford Triton. Direct replacement for Ford 4.6L,5.4L and 6.8L two valve SOHC enginesNOT for 3V engines or DOHC. High quality spark plug repair kit for Ford 304 stainless steel 389100 replacement inserts Brass valve Aluminium alloy line up guide for high hardness highly tempered speed steel screw tap and twist drill Rubber pressure tube, durable and rustresistant foolproof repair system. Fixed the blown engine spark plug issue The 38900 thread repair tool is designed for repairing two valve modular cylinder heads for Ford from blown spark plugs. After blowing all the shavings in the cylinder, reamingremoving the old threads and rethreading a larger diameter with alloy steel inserts, making your car back on the road properly The spark plug repair kit for Ford SOHC 2V engine 4.6L 19982014 E150 E25019922011 Crown Victoria 4.6L 19912011 Lincoln Town Car 4.6L 19922011 Mercury Grand Marquis 5.4L 19962016 E150ESeries 6.8L 19972004 F250550, F53Motorhome. More model details pls see below description. Easy to use The 38900 two valve spark plug tool kit for Ford makes the repair job very easy.Cheaper and easier than replacing the whole enginebuying new cylinder heads. But pls follow the included instructions and watch some YouTube videos before installing. Spark plug insert installer for Ford including The spark plug cylinder repair kit for Ford Triton includes 389100 M141.25 Inserts*8, Cylinder Leak Tester, Reamer similar to a drill bit, Line up Guide, Tap HSS Steel Thread Repair Tool, Snap iron pieces*2, Storage Case