OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives

Alpha One generation 2 upper gearcase years 1991 - 1997

Last updated on 9/26/2023

  • GLM Aftermarket Alpha 1 Gen 2 upper gearcase exploded view breakdown drawing
  • Compatible with all sterndrive models 1991-1997
  • Gear sets, bearings, drive shaft and U-joints
  • Mercruiser Alpha One Generation 2 OEM numbers for easy cross reference
Upper gearcase 1991 - 1997

Mercruiser Alpha 1 Gen 2 1991 - 1997

Photo

Description / OEM #

Price
(USD)

Price (Canadian)

29000 Driveshaft housing assembly

#1 Driveshaft housing assembly

1547-815930A7

$1105.95

$1459.89

Upper gearcase 1991 - 1997

80420 O-ring

#2 O-ring

25-32546

$4.95

$4.89

Upper gearcase 1991 - 1997

23260 Shim

#3 Shim for GLM Marine bearing number 21510 bearing.
15-45691A1

$8.95

$ 18.89

Upper gearcase 1991 - 1997

23261 Shim

#3 Shim for GLM Marine bearing number 21511 bearing.

 

15-32563A1

$5.95

$ 16.89

21510 Tapered roller bearing assembly

#4 Bearing assembly (O.D. 1-15/16) (1991-95)

 

31-61100A1

$28.95

$ 47.89

ball bearings

21511 Tapered roller bearing assembly

#4 Bearing assembly (O.D. 1-25/32) (1996-thru)

 

31-32575A1

$8.95

$ 15.89

11131 Mercruiser Alpha 1 Gen 2 Drive shaft

#5 Mercruiser Alpha 1 Gen 2 Drive shaft

45-55796-1

$106.95

$ 73.89

11210 Gear set

#6 Gear set (1.50/1.47 Ratio)(20-22)

 

43-18411A2

$444.95

$ 598.89

Gear set

11220 Gear set

#6 Gear set (1.65/1.62 Ratio)(24-24)

 

43-45814A5

$394.95

$ 348.89

Gear set

11230 Gear set

#6 Gear set (1.84/1.81 Ratio)(17-19)

 

43-75325A3

$320.95

$ 438.89

Gear set

11240 Mercruiser Alpha 1 Gen 2 Gear set

#6 Gear set (2.40/1.98/1.94 Ratio)(20-24)

 

43-55778A3

$288.95