MerCruiser 99438A1 4" 470 Heat Exchanger 170hp 4cyl 3.7L 488 165hp 1983-1989 Wiring Harness Washer 306561 / 0306561

Washer 306561 / 0306561

34489 / 39332 / 39332A1

Item Details MerCruiser Propeller Shaft 44-66060 / 44-824110 used in all MerCruiser R / MR/ Pre-Alpha Gen 1 Alpha 1 lower units 1970-1990 (some parts here were used a broader number of years)

There are arrows cast on the sides to tell direction

Long Bolts: 3734594

MerCruiser 99438A1 4" 470 Heat Exchanger 170hp 4cyl 3.7L 488 165hp 1983-1989 Wiring Harness Washer 306561 / 0306561Item Details Freshwater used part Overall good condition, original paint. This part has been tested for leaks and has new gaskets on both ends The Part number for The 4" heat exchanger is 99438A1 Found on all "470" models 1976 1989 Using a 4" heat exchanger, You can upgrade the earlier a 3" heat exchanger (found on the pre 1983 models) to a 4" if you swap the mounting bracket, and some of the hoses. 470 (2 BBL.) MERCURY 224 I L4 1976 1979 470 (2 BBL.)