MerCruiser 4cyl 470 170 170hp 3.7L Rocker Valve Cover 41638A1 41637 1983-1986 Trim Parts This part might possibly have

This part might possibly have superseded to future or previous years (1985 1986 1987 1988 1989 1990 1991 models) or past years as well

Mark 30 Mark 28 mark 30h mark 55 mark 55h Mark 58 Mark 75 mark 75h mark 78 mark 78h Merc 400 450 500 650 700 750 800 850 900 950 1000 1150

13 (once you install the proper #206 XHS hub kit)

Lower Gearcase Driveshaft Found on OMC Stringer Stern Drive V6 & V8 Models 1978-1985 (Mechanical Shift & Hydro-Mechanical Shift Units)

note that these are for V8 models because of the installed opposing water outlets

MerCruiser 4cyl 470 170 170hp 3.7L Rocker Valve Cover 41638A1 41637 1983-1986 Trim Parts This part might possibly haveItem Details Removed from a 1983 1984 MerCruiser "470" (170hp) 3. 7L 4cyl 2BBL (SN 6890474) 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