MerCruiser MCM Alpha One Exhaust Elbow Tube 72082A2 72082 J-Tube 470 3.7L 4cyl Harmonic Balancer Mounts to the transom or

Mounts to the transom or floor

Yamaha 90508-29M12-00 Torsion Spring

Upper Unit Gearcase Gear Set Pair part number is

Some of the other parts in this assembly might have been used subsequent years

but from the manual it looks like there were 4 different ones

MerCruiser MCM Alpha One Exhaust Elbow Tube 72082A2 72082 J-Tube 470 3.7L 4cyl Harmonic Balancer Mounts to the transom orItem Details MerCruiser 3. 7L 470 MCM Exhaust Elbow Assembly 72082A2 72082 Generally found on 1976 1982 Models Freshwater Used Part Flapper water shutter IS NOT INSTALLED IN THIS (REPLACEMENT PART NUMBER IS 45586) Overall good condition Original Paint Purchase With Confidence! MCM 470 165hp 170hp 3. 7L 4 cylinder 1976 1977 1978 1979 1980 1981 1982