MerCruiser 470 485 170hp 3.7L Heat Exchanger Cooling Hoses Set 32-77331 32-76326
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- Removed from a 1976-1978 MerCruiser 470 4cyl 170hp S/N 4773394 (w/ 3" diameter heat exchanger) (MCM)
- MerCruiser made researching this section extremely confusing, so if something doesn't seem right here, please let me know..
- Some of the hoses had the part numbers stamped on them and others I've had to deduce which part it likely is.
- Most of the parts here are for Serial numbers 4487701 & Up and generally these parts were used up until 1982
- Freshwater Used Parts
- Hoses are in decent condition, great idea to have a spare set or use as a replacement.
- All appropriate hose clamps included as pictured
Cooling Hoses Included (6 total) - The only missing one is the short little one that goes from the voltage regulator to the heat exchanger
- -32-77245 Heat Exchanger to Thermostat Housing (21-3/4")
- -32-76327 Intake manifold to heat exchanger (MCM)
32-47642 Voltage regulator to drive (long hose)NOT INCLUDED
- -32-77332 Heat Exchanger to exhaust elbow
- -32-76326 Intake Manifold to water pump Hose
- -32-41497 Heat Exchanger to Voltage Regulator
- ...and what appears to be 32-77331 or maybe an early version of 32-99729 for 3" heat exchangers. This is basically the other hose coming off of the heat exchanger that is not clearly documented in the online parts diagrams.
1976 1977 1978 1979 1980 1981 1982 MerCruiser Alpha One 4cyl 470 485 170hp 2 BBL.