MerCruiser 470 488 165hp 170hp 3.7L 4cyl Oil Pump Pickup Tube 32-72877A1 1976-89 Distributor Ignition Parts the best practice is to

the best practice is to just match your existing casting numbers

Item Description Mercury Part Number 31-24515 Torrington Roller Bearing GB-1416 Propeller and Driveshaft Possibly used with Mark  40

Decent condition

For Mercury Prestolite Trim Pumps (Square Reservoir) which is the standard trim pump found on most MerCruiser applications 1970-1982

Made of brass

MerCruiser 470 488 165hp 170hp 3.7L 4cyl Oil Pump Pickup Tube 32-72877A1 1976-89 Distributor Ignition Parts the best practice is toItem Details Removed from a 1976 1978 MerCruiser 470 S N 5064860 Overall Good Condition Parts Included Oil Pick Up Tube Assembly 32 72877A1 Compatibility For the most part it seems these parts were used from 1976 1989 on pretty much all of the 470 models. 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Alpha One 470 4 cyl 165hp 170hp 180hp 190hp 3. 7L 3. 7LX 224CID 488 485 Sterndrive