Extra 14mm Inserts (7/16")

buy Extra 14mm Inserts (7/16") at JC Whitney

5-PC. SPARK PLUG HOLE RE-THREADING KIT Quickly easily repairs and renews stripped/damaged aluminum cylinder heads on cars trucks motorcycles lawn mowers small engines. Special combination tap and reamer to cut off damaged plug thread and cut a new thread. Solid steel inserts eliminate coil wind-out. Includes one each: 3/8" 7/16" 1/2" and 3/4" long inserts. Also instructions. Extra inserts available.