18-4491 - Cylinder Head Assembly 4.3L

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Sierra Marine

Replaces: MerCruiser 938-827178 1 Replaces 4.3L Vortec V-6 (1996-Up) with screw in rocker arm studs (non-adjustable valve train), 8 intake manifold mounting bolts, center mount valve cover.

NOTE: Not for use with engines using factory roller rocker arms.

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.

Warranty (PDF)
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Sierra Marine Cyl Head Assy 4.3l Gm Vorte is equivalent to parts:

Sierra Marine is the market leader for aftermarket marine engine parts. Sierra products cover every major engine brand. Sierra offers a comprehensive product line and an unsurpassed customer satisfaction warranty covering parts and labor.