MERCRUISER
Drive System
UPPER UNIT
UPPER UNIT
GEAR REPAIR KIT
GEAR REPAIR KIT
Replaces: 43-803103T1
Replaces: 43-803104T1
For: Gen II (1998 & Up)(S/N OL100040 & Up)
For: Gen II (1998 & Up)(S/N OL100040 & Up)
1.47:1 Ratio
1.62:1 and 2.00:1 Ratio
UPPER UNIT
UPPER UNIT
GEAR REPAIR KIT
GEAR REPAIR KIT
Replaces: 43-803106T1
Replaces: 43-803105T1
For: Gen II (1998 & Up)(S/N OL100040 & Up)
For: Gen II (1998 & Up)(S/N OL100040 & Up)
1.94:1 and 2.40:1 Ratio
1.81:1 Ratio
UPPER UNIT GEAR SET
Replaces: 43-18410A2,
43-18411A2
Mercruiser #31-32573A1
(1.5:1 Ratio)
(Drive Gear = 22 teeth Driven Gear = 20 teeth)
UPPER UNIT GEAR SET
For most V-8 Drives and Gen II (S/N K999999 & BELOW)
Replaces: 43-45814A5
Stern Drive Model
Beg. S/N End. S/N
Stern Drive Model
Beg. S/N End. S/N
(1.65:1 Ratio) (Drive Gear = 24 teeth
225
3856268 4200499
888
3106717
& UP
Driven Gear = 24 teeth)
260
4898730 6225576
V8R/MR/AlphaOne
6225577
& UP
For: 6 Cyl. Inline S/N K999999 & BELOW
898/228
4782330 6225576
UPPER UNIT GEAR SET
UPPER UNIT GEAR SET
UPPER UNIT GEAR SET
Replaces: 43-75325A3
Replaces: 43-55778A3
Replaces: 43-853640A2
(1.98:1 Ratio)
(1.84:1 Ratio)
For: Gen II Upper (1998-up), 0L100040-up,
(Drive Gear = 20 teeth Driven Gear = 24 teeth)
(Drive Gear = 17 teeth Driven Gear = 19 teeth)
1.62/2.00:1 Ratios (24-24 Teeth)
For: 120/140 (S/N 2791957 & UP) and Gen II
For: V-6 and 470/485 (4 Cyl. etc.) and Gen II
Used with: 18-2417 Complete Upper Gear Case
(S/N K999999 & BELOW)
(S/N K999999 & BELOW)
UPPER UNIT GEAR SET
UPPER UNIT GEAR SET
Replaces: 43-853642A2
UPPER GEAR KIT
Replaces: 43-853641A2
For: Alpha I (Gen II ) (1998-up), 0L100040-up,
Replaces: 43-853643A2
For: Alpha I (Gen II) (1998-up), 0L100040-up,
1.94:1, 2.40:1 Ratios (20-24 Teeth)
1.81 Ratio Upper Gear Set, 17-19 Teeth
1.47:1 Ratio (20-22 Teeth)
Used with: 18-2411 Drive Shaft Housing Assembly,
For:AlphaIGenII1998-up/0L00040-up
Used with: 18-2416 Complete Upper Gear Case
687
