MerCruiser 25-45710 25-45711 O-Ring Set Reverse Lock Valve 48165A5 76812A4 Wiring Harness If you need that set

If you need that set

10-23264 Screw

The Part Number for this Drive Shaft Midsection Exhaust Housing Tube is F684660-2 / 819815C / 684660-1(cast)

The leaf plate was found on 1968-1978 Models (55hp

So on the flip-side 43-27891 & 43-27889 were the 14:28 ratio gears found on:

MerCruiser 25-45710 25-45711 O-Ring Set Reverse Lock Valve 48165A5 76812A4 Wiring Harness If you need that setPart Number(s) Included MerCruiser 25 45710 O Ring (The Larger One) MerCruiser 25 45711 O Ring (The Smaller One) General Application Compatibility For MerCruiser Systems using both Prestolite Trim Pumps (Square Reservoir) with a reverse lock system which is the standard configuration found on most MerCruiser applications 1970 1982 Found on both the Reverse lock assemblies that have inter lock switches as well as those that did not Other Details NEW