Alpha 1 Gen 2 upper gearcase parts drawing 1-22

GLM Marine aftermarket upper gearcase stern drive parts Exploded view item 1 to 22 in outdrive tech drawings

Last updated on 8/12/2023, 1:17:46 AM

  • GLM products are brand new completely compatible and interchangeable with Mercruiser Alpha 1 Generation 2 parts 1991 and up with serial number OD469859 and up
  • GLM has committed to producing high quality and cost effective aftermarket parts for the past two decades

Mercruiser Alpha 1 Gen. 2 upper gearcase parts drawing

Serial numbers OD469859 and up, 1991 to present

P/N 19600
Ratio: 20/22 (1.47)
For 5.OL EFI, 5.7 liter and 350 MAG. OEM 1547-861063Al2

P/N 19700
Ratio: 24/24 (1.62/2.00)
4.3 E.F.I., 4.3 and 5.O liter engines OEM 1547-861063A10

P/N 19800
Ratio: 17/19 (1.81)
4.3 and 4.3 LX OEM 1547-861063A8

P/N 19900
Ratio: 20/24 (1.94/2.40)
For 3.O liter & 3.O LX OEM 1547-861063A6

87501 Alpha 1 Generation 2 seal kit

B
P/N 87501
 Generation 2 seal kit $29.99

39622 Bell housing gasket

C
P/N 39622 
Generation II mounting gasket set $9.95

Alpha 1 generation 2 upper gear case used

D
Gen II used gearcase for 1.84/1.81 ratio 17/19 years 1991 to 1997 upper gearcase with gears, top and yoke shaft 1 year warranty $795.89 Call for availability

28300 Screw

1
P/N 28300
 Top cover screw / 10-98794 $4.95

80420 Alpha 1 Gen 2 O-rings

2
P/N 80420
 O-rings

23260 Alpha 1 Generation 2 Shims

3A
P/N 23260
 Shim for bearing 21510 / 15-45691A1 $9.99

23261 Alpha Generation 2 shim kit

3B
P/N 23261
 Shim set for bearing 21511 / 15-32563A1 $7.99

21510

4A
P/N 21510
 Upper cover bearing assembly O.D. 1-15/16″ 1991-1995 / 31-61100A1 $33.99

21511

4B. P/N 21511 Bearing assembly O.D. 1 -25/32″ 1996-2002 / 31-32575A1 $12.99

11131

5
P/N 11131 Drive shaft / 45-55796-1 $69.99

11210

6A
P/N 11210
 Gear set (20-22) 1.50/1.47 / 43-18410A4 $473.99

11214 V8

6B P/N 11214 Gear set 1.47 ratio 1998 – up OEM 43-853641A2 $330.99

11220

6C
P/N 11220
 Gear set (24-22) 1.65/1.62 ratio 1991 -1997 / 43-45814A5 $275.99

1222 1.62 2.0 ratio 6 cylinder OEM 43-853640A2

6D P/N 11222 Gear set 1.61/2.0 ratio 1998 – up OEM 43-853640A $320.99

11230

6E
P/N 11230
 Gear set 1.84/1.81 ratio (17/19) 1991-1997 / 43-75325A3 $320.95

11233 1.81 ratio V6 470

6F
P/N 11233 
Gear set (17-19) 1.81 ratio 1998 – up / 43-3643A2 $299.99

11240

6G
P/N 11240 Gear set (20-24) 1.98/1.94 ratio 1991-1997 / 43-55778A3 $332.99

11244 Alpha 1 Gen 2 Gear set 1.94 2.4 ratio 4 cylinder

6H
P/N 11244 
Gear set (20-24) 1998 – up / 43-853642A2 $359.95

21540 OMC Bearing 1.65 1.84 1.98 gear ratio

7
P/N 21540
 Roller bearing assembly for the driven gear 1.62, 1.81, 1.94, 2.40 ratio / 31-35990A1 $43.95

21560 Alpha Generation 2 bearing

7B
P/N 21560
 Roller bearing assembly for the driven gear 1.47 ratio / 31-32573A1 $47.99

23270 Driven gear bearing shim

8
P/N 23270
 Shim (5 units) 15-36178A1 $11.99

85011 Oil seal

9
P/N 85011
 Oil seal $8.95

28050

10A
P/N 28050
 U-joint assembly (1991-1997) / 814819A2 $499.99

28070 Universal joint assembly OEM 814819A7

10B
P/N 28070
 U-joint assembly 1998 & up) / 814819A7 $499.99

28080 External lock ring yoke drive shaft assemblies

10C
P/N 28080
 Alpha one gen 2 U-joint assembly with external lock ring 1998 & up OEM 86428A2 $599.99

81180 o-ring

11A
P/N 81180
 O-ring $4.95

82150 Alpha O-rings

11B
P/N 82150
 O-ring

28315 Alpha Generation 2 drive shaft yoke

2A
P/N 28315
 Long yoke assembly / 59830A7 $119.99

28316 Alpha 1 Gen 2 Long yoke assembly

12B
P/N 28316
 Long yoke assembly with external lock ring / OEM 864281A01 $175.95

28030 Alpha Generation 2 u-joint

13
P/N 28030
 U-Joint 1991 thru 1995 / 75832T1 $51.99

28040 External lock ring u joint

13B
P/N 28040
 Alpha one gen 2 and Bravo u-joint with external lock ring year 1998 and up / OEM 865496A01 $122.99

28100 Socket

14
P/N 28100
 Socket for U-joint assembly / 39383-1 $79.99

28110 Mercruiser socket external lock ring

14B
P/N 28110
 Socket with external lock ring for u joint assembly 865503T $59.99

28310 Alpha One yoke shaft

15
P/N 28310
 Yoke 1991-1997 / 46020-1 $79.99

28312 Alpha Generation 2 yoke 1998 up

15B
P/N 28312
 Short yoke 1998 to / 853635 $141.99

28322 Alpha Gen 2 yoke external lock ring OEM-864282T

15C
P/N 28322
 Short yoke 1998 and up with external lock ring / 864282T $122.99

28350 Bearing retainer nut

16
P/N 28350
 Retainer / 816811-1 $26.99

28390 Ring

17
P/N 28390
 Upper gearcase ring / 35983 $13.99

82380 OMC O-ring

18
P/N 82380
 O-ring $4.95

28370 Bearing carrier assembly

19
P/N 28370
 Carrier assembly / 66081A2 $43.99

85030 Alpha Generation 2 oil seal

20 P/N 85030 Oil seal – yoke $14.99

21520

21
P/N 21520
 Roller bearing kit for the drive gear, including spacer. For 1964-1997 models / 31-35988A12 $179.99

23280 Alpha Generation 2 shim kit

22
P/N 23280
 Shim set (6 units) 15-35980A1 $12.99

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