Complete replacement upper unit for GEN II 1.81.

Replace Mercruiser Alpha One GEN II  ratio 1.81/1.84.

Replace Mercruiser OE#: 861063A 8.

Replace  Alpha One GEN II sterndrive built from 1991-today.

Can be installed on the following sterndrive:
Mercruiser Sterndrive V6  175hp.
Mercruiser Sterndrive 3.7L & LX 165,170,180 & 190hp.
Mercruiser Sterndrive V6 4.3L 155,160,175,185 & 205hp.                                                                                                     

Mercruiser Sterndrive V6 4.3LX 175,180 & 200hp.

Sterndrive Engineering Autorized Dealer