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Prop Shaft
hole to hole measured center to center 2-1/8"
(1970-1981) This is an later model of this distributor because of the mounting for the condenser
This was used on 1984
The Part Number of the Shock Mount upper cover F433946-1
MerCruiser 77319A1 170hp 470 4cyl 3.7L Heat Exchanger 3" Early Style 1976-1982 Mercruiser Propeller Prop ShaftItem Details Removed from a 1976 1978 MerCruiser 470 S N 5064860 Overall Good Condition & tested for leaks We have installed new end seal gaskets on this. Parts Included Heat Exchanger 77319A1 77319 Compatibility For the most part it seems these parts were used from 1976 1982 on 470 models that used a 3" Heat exchanger ****(not the larger 4" model)**** 1976 1977 1978 1979 1980 1981 1982 Alpha One 470 4 cyl 165hp 170hp 180hp 190hp 3. 7L 3. 7LX 224CID