GM 5.7L Pre-Vortec Cylinder Head Assembly | Sierra 18-4485HP
GM 5.7L Pre-Vortec Cylinder Head Assembly | Sierra 18-4485HP
Completely assembled new marine cylinder head fits GM 350 cu. in. marine engines with 12 intake manifold mounting bolts.
- Fits 5.7L GM V8 PRE-Vortec engines from 1987-1995 with press in rocker arm studs and 12 intake manifold mounting bolts (4 inside intake manifold bolts at 23 degrees)
- Uses center mount valve covers
- Complete new casting assembly with new stainless steel valves, hardened exhaust seats, valve springs, rocker arms, and retainers
- Sold individually - 2 required per engine
- Replaces Mercruiser 938-883490 1, 938-883490R1, 938-883490, 938-883490R50, 938-884741R, and 938-884741R50
