Your Overtons.com Session is About to Expire!
Sierra Part #18-4491
Cylinder head assembly
For Mercury Marine engine
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:
America's #1 Source for RVs and Accessories
Share your pictures
of life on the water.