MerCruiser 4cyl 470 3.7L 190 190hp Rocker Valve Cover 41638A1 41637 1983-89 Crankshaft This is a Marine alternator

This is a Marine alternator & not an automotive one

AQ130A AQ130B AQ130D AQ130C

5L 120hp 4cyl (inline 4)

you might replace the seals while you are down here

Generally Found on Johnson / Evinrude outboards on gearcases 1974-1994 on 9

MerCruiser 4cyl 470 3.7L 190 190hp Rocker Valve Cover 41638A1 41637 1983-89 Crankshaft This is a Marine alternatorItem Details Removed from a 1985 1986 MerCruiser 470 (190hp) S N A681323 Overall Good Condition, original paint Parts Included MerCruiser Cylinder Head Valve Rocker Cover 41638A1 (Stamped 41637) This particular one was only used on 2bbl models as well as the 4bbl models with the 98348 C1 intake manifolds as these had the provision on the top for a stud for the 4BBL carburetors The 488 models had a different valve cover, but could be replaced by this