Valve Spring Compressor 2V 4V V8 & 4.0L SOHC Replaces 303-452 , 303-567 , 303-382 , T93P-6565-AR , T97P-6565-AH , T97P-6565-A , OTC 7928 , 303-581 , T97T-6565-A & more MADE IN THE USA - lifetime manufacturers warranty! Allows you to work on the intake and exhaust sides of 2V and 4V V8 as well as 4.0L V6 SOHC cylinder heads Made from 4140 steel, it has been pre-heat treated, and annealed. It is built to last a lifetime; not just a couple jobs!