Alpha One I & II Gen Drive Shafts

Replaces: 1547-9412A23

Ratio: 1.98/1.94 (20/24)

Engine: 4 Cylinders Inline

Replaces: 

Serial no. 6225577 & up

Replaces: 1623-8951A26, 1623-8951A33

# OD469859-OK999999, 1991-1997

Replaces: 1547-815930A7

Serial nr. OD469859 and up

Replaces: 1623-815822A7, 1623-815822A33, 1623-815822A47

Replaces:

Mercruiser: 1547-9412A20, 5-5010147CP, 547-9412A20, 547-9412R20, 8265A15, 9412A30, 9412A35; Sierra: 18-2450

Engine: up 300 HP - most V8

Ratio: 1.47 (20/22)

Replaces: Mercruiser: 74639, 74639A2, 74639B1, 74639Q02; Bombardier: 0508696, 0775542

Replaces: Mercruiser: 26-32511A1, 27-94996A3, 27-94996Q2, 27-94996T2, 64818A3, 94996A2, 94996A20, 94996BK2, 94996Q2; OMC/Johnson/Evinrude: 0508537, 0508539, 0508557, 0508577, 0775545 

Alpha One Gen OD469859-OK999999 (1991 - 97)

Replaces: Mercruiser: 12-815952, 815952

Engines: ALPHA ONE GEN II (1991+)