MerCruiser 47488A1 47488 Raw Water Pump Inboard GM 198 898 228 305 350 1975-1982 New Parts Was used on Mercury larger

Was used on Mercury larger outboard

Head Bearing oil assembly: 378526

yours should look just like these ones

1976 1977 1978 1979 1980 1981 1982 3

23-29670 is made of solid brass and different than the one here

MerCruiser 47488A1 47488 Raw Water Pump Inboard GM 198 898 228 305 350 1975-1982 New Parts Was used on Mercury largerPart Number(s) Included MerCruiser 47488 47488A1 Raw Water Pump Bracket General Application Compatibility This would have been found on a handful of GM V8 SBC INBOARD MerCruiser models using the 73823A7 or 72774A11 Water pumps 1975 1982 198 MIE (2 BBL.) GM 305 V 8 1977 4762210 THRU 6218461 898 (2 BBL.) GM 305 V 8 1977 1982 4762210 THRU 6218461 228 (4 BBL.) GM 305 V 8 1979 1982 5170009 THRU 6218461 228 MIE (4 BBL.) GM 305 V 8 1979 1980 5170009 THRU