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 1987-95 with press in rocker arm studs with 12 intake manifold mounting bolts (4 inside intake manifold bolts at 23 degrees), center mount valve covers