MerCruiser 1623-815822A47 Alpha One Gen II 2 Lower Unit Counter Rotation Gearcase 3.0L 4.3L 5.0L 5.7L Cooling System & Hoses Being a Chevy GM Block

Being a Chevy GM Block many of these parts will work with others: Mercruiser

Part #'s Included Armature Plate: 580283 584810 E184B 580360

Bolts Screws and Parts

378578 0378578 Driveshaft Bearing (Found on various 33hp & 40hp outboards 1962-1973)

MerCruiser 1623-815822A47 Alpha One Gen II 2 Lower Unit Counter Rotation Gearcase 3.0L 4.3L 5.0L 5.7L Cooling System & Hoses Being a Chevy GM BlockItem Details This is a counter rotating unit. Usually only found on boats with twin engines. Impeller Has been replaced. Compatible with all upper alpha one gen II 2 Units used 1991 & Up Regardless of engine (140hp 3. 0L 4. 3L V6 5. 0L 305 5. 7L 350 V8 etc) Part#s: 1623 815822A7 1623 815822A33 1623 815822A47 1623 815822 C4 Shifts and functions as it should. All shafts are pretty clean and not rusted up. It has been pressure tested Gear oil will be