Designed to aide in repairing 1996 - 2003 Two Valve Ford Modular Cylinders Heads. 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 EnginesHigh quality oversized steel alloy insert will repair other inserts that fail and has no ill effects from heat transfer.Inside Diameter: m14 x 1. 25Outside Diameter: . 75 -16California Residents Prop 65 warning: Products may contain a chemical known to the State of California to cause cancer, birth defects or other reproductive harm.This product has a manufacturer warranty against defects in materials and workmanship for a period of ONE (1) YEAR from the date of original retail purchase. See our Seller Return Policy for more details.