Volvo Penta 840808 Starter Motor Assembly AQ125A AQ131 Hitachi S114-237 Boat Emblems You can see this in

You can see this in the pictures

1971-1972 50hp

Mercury 31-17514A2 Bearing Kit  Found on outboards with Connecting Rod Forging 636-8118 or 644-818141 V-135 V6

There was only 2 types of these tubes (Inline engines type (11")  & V-engines type non power steering)

Part # 66004-3

Volvo Penta 840808 Starter Motor Assembly AQ125A AQ131 Hitachi S114-237 Boat Emblems You can see this inItem Details & Compatibility From a AQ125A 4 Cylinder Sterndrive (Later Serial Number Range) Also found on AQ131A AQ131B AQ131C AQ131D & Others (But usually specific to the serial number so make sure to check the diagram) Notable Part Number(s) Volvo Penta 840808 Starter Motor Assembly (Uses The LONGER Bolts as it has the wider threaded mounting flange unlike the earlier starters, but it will replace those as well) Condition Notes Overall Good