SE106 1.81 Complete (Replaces Mercruiser's Alpha One) 

Replaces most Mercruiser Sterndrives 165-205 HP and up from 1976-1990.
Typically used on V6 engines and the large 3.7L Mercruiser inline 4 cylinder engine.
Comes with a 9-9/16 new style input yoke.
Does not include Complete Install Kit or Anode Kit.
Up to 300 HP (SEI does not warranty applications over 300 HP)
Replaces Mercruiser Sterndrive 470 1983-1989
Replaces Mercruiser Sterndrive 485 1983-1989
Replaces Mercruiser Sterndrive 4.3L V6 262 C.I. 1983-1990
Replaces Mercruiser Sterndrive 3.8L V6 229 C.I. 1983-1984
Replaces Mercruiser Sterndrive R/MR/Alpha One 1983-1990
Typical Mercruiser Sterndrive engine liter applications from 1983-1990 include 3.7L inline 4, 4.3L V6
Typical Mercruiser Sterndrive engine cubic inch applications from 1983-1990 include 224, 262 CI
Typical Mercruiser Sterndrive engine horsepower applications include 165,170, 175, 180, 185,190 and 205