These Grade 5 header bolt kits incorporate self-locking nuts to hold your exhaust system to your headers securely. Stover lock nuts also eliminate the possibility of losing the “old-style” lock washers because they're not needed. Zinc plated bolts with cadmium plated nuts resist corrosion and are unaffected by high temperatures. 3/8"-16 x 1" (3 bolts and nuts).
