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Sierra Cylinder Head Assembly For Mercury Marine Engine, Sierra Part #18-4491

Item # 750602
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Ships within 5 - 6 business days

Additional Information:
  • Additional discounts do not apply.


  • Sierra Part #18-4491

  • Cylinder head assembly

  • For Mercury Marine engine

Product Summary 

Sierra cylinder head assembly for Mercury Marine engine. Replaces 4.3L Vortec V6 (1996-up) with screw-in rocker arm studs, 8 intake manifold mounting bolts, center mount valve cover. Note: not for engines using factory roller arms. Sierra Part #18-4491.

OEM Part Number:
938-827178 1