MerCruiser Freshwater Closed Cooling Kit Heat Exchanger Mount Bracket 74632A1 80hp this should be 1626-2040A1 as

this should be 1626-2040A1 as it looks like 1626-2040A3 was for the "Standard" length model

Yamaha Part Number: 68D-G5300-00-4D

1L 165hp 250CID

115hp: 1982-1984

MerCruiser Freshwater Closed Cooling Kit Heat Exchanger Mount Bracket 74632A1 80hp this should be 1626-2040A1 asItem Details MerCruiser Mounting Bracket Set Pair for Freshwater Closed Cooling Heat Exchanger (Port Left & Starboard Right) Original Paint Foam Pads should probably be replaced, but pretty much any 3M sticky foam product should work for this. Part Numbers Included 74633A1 74633 (Port) Mounting Bracket 74632A1 74632 (Starboard) Mounting Bracket Compatibility MerCruiser Chevy GM 305 5. 0L 228hp 898 V8 1981 1983 Using a closed cooling kit (74643A1)