Mercruiser Alpha One Parts and Repairs

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Mercruiser Alpha One Bellows Kits

GLM MC-1, R, MR Outdrive and Alpha One Transom Service Parts
with install video

  • Bell housing kits include all rubber bellows with hose clamps
  • Gimbal bearing and oil seal included
  • Outdrive installation gasket requires gasket sealing compound when installing
  • Adhesive glue is required on rubber to prevent hoses from coming loose (shown below)
  • Information on how to replace your bellows, includes accordion style exhaust (1973 - 1990, serial numbers 3469428 - 0D469858)
  • Install / removal video located at bottom of page

Bell housing Alpha 1 and Gen.2

Bell housing Alpha 1 and Gen.2

Photo

Description
OEM number

Price
(USD)

Price
(Canadian)

21950 Bellows kit 30-803097T1

Bellows Kit

P/N 21950 Mercruiser lower unit transom service kit, includes accordion style exhaust (1973 - 1990, serial numbers 3469428 - 0D469858)

30-803097T1

Parts included:
21905 Gimbal Bearing
85910 Oil seal
39622 Outdrive installation gasket Kit
47110 Water Hose 3/4 inch
47120 Hose 5/8 inch
89050 U-Joint tube
89080 Shift Cable tube
89100 Exhaust tube

$145.95

$192.95

1967-1972

Bellows Kit

P/N 21950-89040, includes P/N 89040 rubber tube for drive shaft / u-joints. (1967 - 1972, serial numbers 2062141-3443920)

30-803097T1

Parts included:
Same as above, except 89040 instead of 89050.

$159.00

$211.95

21951 Mercruiser bell housing parts 30-803098T1

21951 Mercruiser bell housing parts

P/N 21951 Bell housing service kit, includes open ended exhaust tube (not shown in picture). Compatible with MR and Alpha 1, 1983 - 1990, serial numbers 6225577 - 0D469858

30-803098T1

Parts included:
21905 Gimbal bearing
39622 Bell housing gasket kit
47110 3/4 inch water hose
47120 Hose 5/8 inch
89050 Drive shaft tube
89080 Shift cable tube
89150 Exhaust tube
85910 Oil seal

$179.95

$238.95

21960 Alpha One transom 30-803099T1

21960 Alpha One transom

P/N 21960 Alpha 1 Generation 2 bellows, gimbal bearing and gasket kit (1991 and up, serial numbers 0D469859 and up)

30-803099T1

Parts included:
21905 Gimbal housing bearing
39622 Outdrive installation gasket kit
47110 3/4 inch water hose
89050 Drive shaft, shift cable
85910 Oil seal
89181 Sleeve
89180 Exhaust

$169.00

$224.95

Compounds / Tools / Video

 

Price
(USD)

Price
(Canadian)

92-861166Q Adhesive glue

92-861166Q Adhesive glue

P/N 92-86166Q1 Glue / adhesive. Replaces Sierra 18-9031.

$19.00

$23.00

39622 Bell housing gasket 27-94996T2

P/N 39622 Bell housing gasket kit OEM number 27-9499602

Contains
o ring P/N 81180
(2) 25-35027
gasket P/N 39622
(1) 27-94996A2
gasket P/N 31160
(1) 27-35982

   
90360 Bellows expander tool

90360 Bellows expander tool

P/N 90360 Expander tool
Installs the exhaust bellows on the MC-1, R. MR and Alpha 1 outdrive units OEM 91-45497A1

$62.95

$82.95

90110 shift cable tool

90110 shift cable tool

P/N 90110 GLM Marine aftermarket stern drive gimbal housing tool used to remove and install shift cable on Mercruiser outdrive units.OEM #91-12037

   
90200 Hinge Pin Tool 91-78310

90200 Hinge Pin Tool 91-78310

P/N 90200 hinge pin tool 91-98310

Description : Removes and installs hinge pins from bell housing

$17.00

$21.00

Install / removal video by Tech service rep Wayne Coll.

This video was shot as a high school project by daughter Justine Coll about 10 years ago. At this time we did not sell or service Mercruiser outdrives or bell housings, this was our own boat.

My wife purchased the 28 foot twin engine boat at an auction and booked mooring at Ontario Place in Toronto Canada with out even looking at the outdrive or engine.

My job was to fix the boat in 48 hr. so kid can have a air show party.