Mercruiser / OMC / Volvo. New casting and complete assembly with new- stainless steel valves, hardened steel exhaust seats, valve springs, valve locks and retainers. All GM cylinder heads utilize high performance screw-in rocker arm studs in place of factory press in rocker arm studs.


Application : 5.7L V-8 GM Vortec (1996-up) with press in rocker arm studs with 8 intake
manifold mounting bolts, composite valve cover