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Sierra Marine Parts Catalog: Volvo-Penta

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CYLINDER HEAD ASSEMBLIES
All cylinder heads are new castings and complete assemblies 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.
18-4485
18-4484
CYLINDER HEAD ASSEMBLY
CYLINDER HEAD ASSEMBLY
Fits: 5.7L V-8 GM (1987-95) with press in rocker arm studs with 12 intake manifold
Fits: 5.7L V-8 GM (1969-86) with 12 intake
mounting bolts- (4 inside intake manifold bolts at 23 degrees), center mount valve covers
manifold mounting bolts, perimeter mount valve cover
18-4486
18-4489
CYLINDER HEAD ASSEMBLY
CYLINDER HEAD ASSEMBLY
Fits: 5.7L V-8 GM Vortec (1996-Up) with press in rocker arm studs with 8 intake
Fits: 2.5L/3.0L GM (1968-95) (non MerCruiser LX models) (1968-95)
manifold mounting bolts, composite valve cover
18-4491
18-4495
CYLINDER HEAD ASSEMBLY
CYLINDER HEAD ASSEMBLY
Replaces 4.3L Vortec V-6 (1996-Up) with screw in rocker arm studs (non-adjustable
Replaces: 3854339,3853894
valve train), 8 intake manifold mounting bolts, center mount valve cover. NOTE: not for
Fits: (1980& Up) 5.0L Ford with D-shape 58 cc combustion chamber
use with engines using factory roller rocker arms.
18-4502
CYLINDER HEAD
High Performance
Aluminum cylinder head sold in pairs only. This utilizes a
18-4501
185cc intake runner/62cc exhaust runner and 2.02/1.60
CYLINDER HEAD
stainless valves placed in a 72cc combustion chamber.
849
Fits: 5.0L Vortec
Fits: 5.7, 6.2L GM small block V-8