Grade 8 bolts will not stretch when hot;Duplex nickel finish for a superior look and corrosion resistance;Double hex head includes 3/16 inches recessed allen head for easy installation;Removable and reusable;Can visually inspect; no need to put a wrench on to check tightness

• Stage 8 8906M Locking Header Bolt Kit with 8mm Bolts for Ford 4.6 and 5.4 Liter Modular Engine

Stage 8 8906M Locking Header Bolt Kit with 8mm Bolts for Ford 4.6 and 5.4 Liter Modular EngineStage 8