SEI Marine SE106 MerCruiser Alpha One Gen 1 Lower Unit.
Sterndrive Engineering SE106 lower unit
Works for all gear ratios
Amazing 3 year No Fault warranty!
Call with questions: 856-432-6014
Replaces R, MR, Alpha One lowers from approx. 1972-1990
Has 13 Spline Driveshaft
The tooth count is 13-21
Up to 300 HP.
