Lower Unit Gears

OMC LOWER UNIT GEARS

HP

Year

Model

Forward

& Pinion

Reverse

Gear

Clutch

FWD / Pinion& Reverse

2214

25

1989-95

AR

2905

2906

2736

20-35 HP (long pinion)

1985-Up

-

-

-

2900 (2)

30-35 HP (long pinion)

1984

-

-

-

2900 (2)

35 (Big Foot)

1987

AR, AE, AT

Included

Included

2735

2901 (1)

40

1984-88

Included

Included

2735

2901(1)

40

1989-97

2905

2906

2736

2214

48

1987-88

Included

Included

2735

2901(1)

48

1989-96

2905

2906

2736

2214

50

1979-88

Included

Included

2735

2901(1)

50

1989-97

2905

2906

2736

2214

50 (3 Cyl)

1995-97

2902

2907

2732

55

1979-81

Electric Start

Included

Included

2735

2901(1)

60

1980-85

Electric Start

Included

Included

2735

2901(1)

60

1986-87

2902

2907

2732

60 (3 Cyl) 20"

1986-97

ALL

2902

2907

2732

65 Commercial

1984-97

ALL

2902

2907

2732

70

1975

"E" Model

2902

2907

2732

70

1976-97

20" Model

2902

2907

2732

70

1976, 1986-95

ALL

-

-

2732

75

1975-88

20" Model

2902

2907

2732

85

1978-80,

ALL

2904

2908

2733

2213

1991 -95

88

1987-96

ALL

2904

2908

2733

2213

Except 28"

2904

2908

2733

2213

90

1981-97

Models

9060°

1995-2000

SPI, P1 , VL

2904

2908

2733

2213

100

1979-80,

ALL

2904

2908

2733

2213

1990-94

100 Commercial

1989-90

-

2908

2734

105 JET

1992

ALL

2903

-

-

110

1986-89

ALL

2904

2908

2733

2213

115

1978-84,

ALL

2904

2908

2733

2213

1990-95

115

1978-85

ALL

2904

2908

2733

2213

1990-95

115 60°

1995-2000

SPI, P1 , VL

2904

2908

2733

2213

120

1986-92

ALL

2904

2908

2733

2213

12OTL

1994

2904

2908

2733

2213

125

1992

2904

2908

2733

2213

125 Commercial ESX

1989-90

ALL

2904

2908

2733

2213

140

1978-84,

ALL

2904

2908

2733

2213

1986-87

140 TL

1988-94

2904

2908

2733

2213

140 TX

1988-94

ALL

-

-

2734

150

1979-87

ALL

2903

2909

2734

2211

150

1988-90

ALL

2903

2909

2734

2211

150

1991-97

2903

561

2734

2212

150 Commercial

1993-95

ALL

2903

561

2734

2212

155 Commercial

1989-90

WTP

2903

2909

2734

2211

175

1978

-

2909

2734

175

1979-87

ALL

2903

2909

2734

2211

175

1988-90

2903

2909

2734

2211

(1) Includes Forward, Reverse and Pinion
 (2) Long Pinion, 3 dog clutch

OMC LOWER UNIT GEARS

HP

Year

Model

Forward
& Pinion

Reverse
Gear

Clutch

FWD / Pinion& Reverse

175

1991-97

ALL

2903

561

2734

2212

185

1991-94

185

1984-85

ALL

2903

2909

2734

2211

200

1979-83,

ALL

2903

2909

2734

1986-97

2211

200

1991-97

ALL

2903

2909

2734

200 Commercial

1990-91

ALL

200

1991-97

ALL

2903

561

2734

2212

220

1987

ALL

2903

2909

2734

2211

225

1986-87

ALL

2903

2909

2734

2211

225

1988-90

ALL

2903

2909

2734

2211

225

1991-97

ALL

2903

561

2734

2212

235

1979-85

ALL

2903

2909

2734

2211

DRIVE GEAR SETS

1.6

1983-90

ALL

2904

2908

2734

1.8

1987

ALL

2904

2908

2734

2.0

1988-90

ALL

-

-

2734

2.6

1986

ALL

-

2909

2734

2.5/2.6V-6

1983-85

ALL

-

-

2213

2.7

1987

ALL

2903

2909

2213

2211

3.0

1989-90

ALL

2903

2909

2734

2211

3.0

1988

ALL

-

2909

2734

4.0

1989-90

ALL

-

-

2734

(1) Includes Forward, Reverse and Pinion

Gear Set 2900
1984 30-35 HP
OE:N/A

Gear Set 2901
2 cyl 40-50 HP 84-88
OE: 433570

Forward Gear & Pinion 29052 cyl1989-Up
OE: 397627

Reverse Gear 2906
2 cyl
OE: 332489

Forward Pinion & Reverse
22142 Cyl 1989-UP

Sliding Clutch 2735
3 Dog
2 cyl 40-6OHP 79-88
35HP Big Foot only
OE: 319895

Sliding Clutch 2736
3 Dog
2 cyl 40-5OHP 89-Up
OE: 332491

Forward Gear & Pinion
2902
3 cyl 50-75HP 1975-Up
OE: 397338

Reverse Gear 2907 3cyl OE: 318304

Sliding Clutch 2732 3 Dog 3 cyl 50-70 HP OE:318303

Clutch Dog Spring 2398 2 & 3 Cyl 0E320311

Forward Pinion & Reverse 2213 V4 6 Spline

Forward Gear & Pinion 2904 V4
OE:436746 6 Spline

Reverse Gear 2908 V4
OE: 340490

Sliding Clutch 2733 3 Dog V4 OE:323664

Forward Pinion & Reverse
2211
1979-90 V6
OE:

Forward Pinion & Reverse
2212
91-Up V6
OE:

Washer for
Big Reverse Gear
6565
91-Up V6
OE: 336565

Sliding Clutch 2734
6 Dog V6
Ring on clutch must face
prop end.
OE: 337772

Reverse Gear 2909
1979-90 V6
OE: 910211

Reverse Gear 561
91-Up V6
OE: 336561

Prop Nut & Keeper 2939
OE: 398402

Pinion Nut 31-4730 Fits V4 and V6 OE: 314730

V-4 & V-6 Shim Kit 345
Includes:
.003 18-2229
.004 18-2230
.005 18-2231

Clutch Dog Spring 2787 V4&V6 OE: 324369

Drive shaft Retainer 504 V4&V6OE: 338504

Upper Bearing Cap 
Assembly 9476
V4&V6
OE: 439476

Drive shaft Retainer Pin 538
V4 & V6 OE:311538

 

 

Bearing Carrier 8039 V6 89-95
1.187" Prop Shaft

OE: 438039

Bearing Carrier 363 V6 96-Up
1.250" Prop Shaft OE: 5000363