Mercruiser Alpha One Parts and Repairs

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Mercruiser Alpha One Outdrive Bearing

Tapered, roller and ball bearings for outdrive upper and lower units

  • Include inside and outside race
  • Complete rebuild kits for all models
  • For upper units and lower gearcases
  • Manufactured by Timkins, USA

Lower Unit

 

Price
(USD)

Price
(Canadian)

21570 Roller bearing

21570 Roller bearing

P/N 21570 For upper drive shaft (1970 - 1983 only)

31-53079A1

$23.00

$28.00

21610 Drive shaft 31-42647A1

21610

P/N 21610 For lower drive shaft

31-42647A1

$43.00

$53.00

21590 Mercruiser forward 31-35928T1

21590 Mercruiser forward

P/N 21590 For forward gear, outside. (1967 - 1995, S/N 2062141-0F679999)

31-35928T1

$49.00

$61.00

11420 31-30895T

11420

P/N 11420 For forward gear (inside)

26-816464-1

$12.00

$15.00

21620 Reverse 30-88957T

21620

P/N 21620 For reverse gear (1967 - present)

30-88957T

$32.00

$41.00

11410 Prop shaft 31-30956T

11410

P/N 11410 Prop shaft (all years)

31-30956

$10.00

$12.00

Lower Rebuild Kits

All Kits Include Bearings,
Seals and Shims

Price
(USD)

Price
(Canadian)

25110

25110 Rebuild kit

P/N 25110 Rebuild kit for MC-1 and 1 models, 1972 - 1983

31-803068T1

$184.00

$230.00

25120

25120

P/N 25120 Rebuild kit for Alpha 1 models (1984 - 1990)

31-803090T1

$306.00

$382.00

21530

31-803094T1

P/N 25130 Parts kit for Generation 2 models (1991 - 1995, S/N 0D469859-0F679999)

31-803094T1

$204.00

$255.00

25140 31-803095T1

25140

P/N 25140 Complete kit for Generation 2 models (1996 - 1997, S/N 0F680000-0K999999)

31-803095T1

$217.00

$272.00

25150 31-803096T1

25150

P/N 25150 Lower unit kit for Gen 2 models (1998 and up, S/N 0L100040 and up)

31-803096T1

$212.00

$265.00

Upper Gear Case

 

Price
(USD)

Price
(Canadian)

21510 Top cover 31-61100A1

21510

P/N 21510 For top cover (1971 - 1995) (1-15/16" O.D.)

25-32546

$24.00

$31.00

21511 31-32575A1

21511

P/N 21511 For top cover (1996 and up) (1-25/32" O.D.)

25-32546

$21.00

$26.00

21560 Alpha One 47-31-32573A1

21560 Alpha One

P/N 21560 (1.50 / 1.47 ratio, 1991 and up models)

31-32573A1

$36.00

$45.00

21540 Tapered 31-359900A1

21540

P/N 21540 (1.65, 1.84, 1.98 and 1.50 Ratio)

31-35990A1

$34.00

$42.00

21520 31-35988A12

21520

P/N 21520 Double bearing with spacer. Compatible with all ratios except 1.32, all years up to 1997 (up to serial number 0K999999)

31-35988A2

$99.00

$123.00

21522 31-30894A5

21522

P/N 21522 Same as above. For 1998 and up models only, serial number 0L100040 and up. Compatible with all ratios except 1.32.

31-30894A5

$99.00

$123.00

Gimbal / Bell Housing

 

Price
(USD)

Price
(Canadian)

21905 Gimbal 30-862540A3

21905 Gimbal

P/N 21905 Heavy duty gimbal bearing. Larger area between the shields allow for more grease filling.

30-862540A3, 30-60794A4

$45.00

$56.00