MerCruiser 470 485 170hp 3.7L Heat Exchanger Cooling Hoses Set 32-77331 32-76326 Cooling System & Hoses If your curious on what

If your curious on what kit to use

but make sure your connector looks exactly like this one as they used the fuel connector casting black block for multiple fuel line configurations)

5L 120hp / 3

939 CUP dimension (standard-diameter of bearing cup / diameter of seat where cup sits)

MerCruiser 470 485 170hp 3.7L Heat Exchanger Cooling Hoses Set 32-77331 32-76326 Cooling System & Hoses If your curious on whatItem Details 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