Sierra Cylinder Head Assembly 18-4491

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Part Number:18-4491

Sierra Cylinder Head Assembly 18-4491

Sierra Cylinder Head Assembly 18-4491 Replaces MerCruiser 938-827178
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.

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