OMC Cobra Exhaust Y-Tube Pipe 4.3L V6 911891 0911891 Sterndrive 170hp 1986-88 Crankshaft Crankshaft Compatibility by year: (this

Crankshaft Compatibility by year: (this is based on my research and the OMC parts diagrams)

2-Piece Rear Main seal applications (Pre-1990)

What I do know is that it took quite a while to count all of them

This is Off a Mercury Mark 30-1 (serial # 994104) Possibly 1956

OMC Cobra Exhaust Y-Tube Pipe 4.3L V6 911891 0911891 Sterndrive 170hp 1986-88 Crankshaft Crankshaft Compatibility by year: (thisItem Details Found on OMC Cobra Sterndrive applications 1986 1988 4. 3L V6 applications, part no 911891. Great Condition, Original Paint, no flappers are installed in this unit, but they still sell the replacement parts for these. Please inspect pictures closely as yours should look just like this. If you are unsure please feel free to ask. Purchase with confidence! 1986 1987 1988 0985768