Sierra 18-4486 Cylinder Head Assembly
Sierra 18-4486 Cylinder Head Assembly, Sierra 18-4486 Cylinder Head Assembly for 5.7L Vortec (1996 - Up)Fits: 5.7L V-8 GM Vortec (1996-Up) with press in rocker arm studs with 8 intake manifold mounting bolts, composite valve cover. New stainless steel valves, hardened steel exhaust seats, valve springs, valve locks and retainers; GM cyl. heads utilize high performance screw-in rocker arm studs in place of factory press studs; Replaces: Mallory; 9-59005; Mercruiser Stern Drive; 938-803860T; 938-883297 1;