Mercruiser outdrive parts | Alpha one lower unit repairs

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Alpha One Upper Unit Parts Diagram

Gen 2 Mercruiser outdrive gearcase components
#1-20 with exploded view breakdown drawing

  • Compatible with Alpha One Gen 2 (1991 and up) models
  • Mercruiser OEM part number cross reference
  • Gears, bearings and u-joints
  • GLM Aftermarket components

Alpha One Gen 2 drawing parts 1-20

Photo

Description / OEM #

Price
(USD)

Price
(Canadian)

19600 Upper Gear Housing 1547-861063A12

19600 Upper Gear Housing

Item 1
Complete upper gearcase drive shaft assemblies with drive shaft and u-joints. All ratios available for 1991 and up, serial numbers OD469859 and up

1547-861063A6, 1547-861063A12, 1547-861063A10, 1547-861063A8

$1399.00

Engine / Model

$1748.00

Engine / Model

80420-25-32546

80420

Item 2
P/N 80420 O-rings (5)

25-32546

$8.95

$10.95

23260 Shim 15-45691A1

23260 Shim

Item 3A
P/N 23260 Shims (for bearing 21510)

15-45691A1

$8.95

$11.95

23261-15-32563A1

23261

Item 3B
P/N 23261 Shims (for bearing 21511)

15-32563A1

$6.95

$8.95

21510 Top cover 31-61100A1

21510

Item 4A
P/N 21510 Bearing Assembly (O.D. 1-15/16) (1991-95)

31-61100A1

$28.95

$37.95

21511 31-32575A1

21511

Item 4B
P/N 21511 Bearing Assembly (O.D. 1-25/32) (1996-THRU)

31-32575A1

$22.95

$28.95

11131 Drive shaft 45-55796-1
Item 5
P/N 11131 Drive shaft

45-55796-1

$106.95

$140.95

11210 Mercruiser V8 43-18411A2

11210 Mercruiser V8

Item 6A
P/N 11210 Heavy duty gear set with bearing 21560. (1.50 or 1.47 Ratio) (20-22) for V8 models 1971 - 1997, up to serial number 0K999999.

43-18410A4

$444.95

$586.95

11220 Alpha One gear set 43-45814A5

11220 Alpha One gear set

Item 6B
P/N 11220 Gear Set (1.65 or 1.62 Ratio) (24-24) for 6 cylinder and 165 models, 1970 - 1997, up to serial number 0K999999.

43-45814A5

$394.95

$520.95

11230 V6 43-75325A3

11230

Item 6C
P/N 11230 Gear Set (1.84 or 1.81 Ratio) (17-19), 470/485 models and V6 models 1976 - 1997, up to serial number 0K999999.

43-75325A3

$320.95

$423.95

11240-4 cylinder 43-55778A3

11240-4 cylinder 43-55778A3

Item 6D
P/N 11240 Gear Set (1.98 or 1.94 Ratio) (20-24), for 120/140 and 4 cylinder models, 1970 - 1997, up to serial number 0K999999.

43-55778A3

$288.95

$380.95

11214 Gears 43-853641A2

11214 Gears

Item 6E
P/N 11214 Gear Set (1.47 Ratio) with bearing 21560. (20-22), for newer V8 models, 1998 and up, OL000040 - up

43-853641A2

$508.95

$671.95

11244 Gen 2 43-853642A2

11244

Item 6F
P/N 11244 Gear Set (1.94 / 2.40 Ratio) (20-24), for 4 cylinder motors, 1998 and up, OL000040 - up

43-853642A2

$508.95

$671.95

11233

11233

Item 6G
P/N 11233 Gear Set (1.81 Ratio) (17-19), for V6 engines, 1998 and up, OL000040 - up

43-853643A2

$466.95

$615.95

21540 Tapered 31-359900A1

21540

Item 7A
P/N 21540 Roller Bearing (1.65, 1.84, 1.98 Ratio)

31-35990A1

$34.95

$43.95

21560 Alpha One 47-31-32573A1

21560 

Item 7B
P/N 21560 Roller Bearing (1.50 Ratio)

31-32573A1

$40.95

$53.95

23270-15-36178A1

23270

Item 8
P/N 23270 Shims

15-36178A1

$9.95

$12.95

85011-26-66302

85011

Item 9
P/N 85011 Oil seal

26-66302

$9.95

$11.95

 
Item 10A
P/N 28050 U-joint assembly (includes drive shaft, universal joints, socket and short yoke

814819A2

$392.95

$518.95

 
Item 10B
P/N 28070 U-joint assembly (includes short and long yoke with u-joints. For 1998 and up models only, serial numbers OL000040 and up.

25-25439

$499.95

$659.95

81180 25-25439

81180

Item 11A
P/N 81180 O-rings (5)

26-32511

$4.95

$5.95

82150-25-35027

82150

Item 11B
P/N 82150 O-rings (5)

814819A3

$4.95

$5.95

28315 Drive shaft 75832T1

28315 Drive shaft

Item 12
P/N 28315 Drive shaft. New and used available.

814819A3

$103.95

$136.95

28030 U-Joint 805536A2

28030 U-Joint

Item 13
P/N 28030 U-joint

75832T1

$44.95

$58.95

28100 Socket 39383-1

28100 Socket

Item 14
P/N 28100 Socket (universal joints must be installed, sold separately)

39383T

$64.95

$85.95

28310 Yoke 46020-1

28310 Yoke

Item 15A
P/N 28310 Yoke (short), 1965 - 1997, up to serial number 0K999999

46020-1

$60.95

$79.95

28312-853635

28312

Item 15B
P/N 28312 Yoke (short), 1998 and up, S/N 0L100040 and up

853635

$123.95

$163.95

28350 Retainer 816811-2

28350 Retainer

Item 16
P/N 28350 Retainer

816811-1

$22.95

$29.95

28390 Ring 35983

28390 Ring

Item 17
P/N 28390 Ring

35983

$11.95

$15.95

82380-25-70937

82380

Item 18
P/N 82380 O-ring (5 units)

25-70937

$12.95

$15.95

28370 Carrier assembly 66081A2

28370 Carrier assembly

Item 19
P/N 28370 Carrier assembly

25-70937

$38.95

$48.95

85030-26-823894

85030

Item 20
P/N 85030 Oil seal

26-823894

$14.95

$17.95