Mercruiser Outdrive Parts Drawings *How to Videos

T.C. Electronics/Marine Home Page

Mercruiser upper gear set application chart

Cross reference chart for gear ratio, model year and serial numbers for Mercruiser outdrive upper gears

Model
Gear ratio
Year
Serial number
Upper drive gear kit
Upper gear housing service kit
120 / 140
1.98

1970-1982

2791957-6225576
11240
N / A
470 / 485
1.84

1976-1982

4208730-6225575
11230
N / A
165
1.65

1970-1981

2763442 and up
11220
N / A
888
1.50

1971-1977

3106717 and up
11210/11212
N / A
225-S
1.50

1974

3856268-4200499
11210/11212
N / A
898/228
1.50

1977-1982

4782330-6225576
11210/11212
N / A
260
1.50

1978-1982

4898730-6225576
11210/11212
N / A
R/MR/Alpha One
1.98

1983-1990

6225577 and up
11240
11245
R/MR/Alpha One
1.84

1983-1990

6225577 and up
11230
11235
R/MR/Alpha One
1.65

1983-1990

6225577 and up
11220
11225
R/MR/Alpha One
1.50 HD

1983-1990

6225577 and up
11210/11212
11215
Alpha One SS
1.50

1986-1989

OA545004 and Up
11210/11212

 

Alpha One Gen ll
2.40

1991-1997

 OD469859-OK999999

11240
11246
Alpha One Gen ll
1.98/1.94

1991-1997

 OD469859-OK999999

11240
11246
Alpha One Gen ll
1.65/1.62

1991-1997

 OD469859-OK999999

11220
11226
Alpha One Gen ll
1.84/1.81

1991-1997

 OD469859-OK999999

11230
11236
Alpha One Gen ll
1.50/1.47

1991-1997

 OD469859-OK999999

11210/11212
11216
Alpha One Gen ll
2.40/1.94

1998 & up

OL000040 and up

11244
11247
Alpha One Gen ll
1.81
1998 and up

 OL000040 and up

11233
11237
Alpha One Gen ll
2.00/1.62

1998 and up

OL000040 and up

11222
11227
Alpha One Gen ll
1.47

1998 and up

OL000040 and up

11214
11217