OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives

MR and Alpha One outdrive bell housing (1970 - 1990)
exploded view drawing

Last updated on 9/19/2023

  • Compatible with Mercruiser and Alpha One models up to 1990
  • Mercruiser component diagram with OEM numbers for cross reference
  • Bellows and service kits
  • Bushing kits and installation gaskets
  • Click here for Alpha 1 Gen 2 (1991 and up) bell housing components

Mercruiser Bell Housing

Mercruiser Bell Housing

Mercruiser bell housing layout

Photo

Description / OEM #

Price
(USD)

Price (Canadian)

Mercruiser Bell Housing

39590

Item 1A
P/N 39590 Outdrive installation gasket kit (1967 – 1982)
 
27-64818T4

$12.99

$15.99

Mercruiser Bell Housing

39622 Bell housing gasket

Item 1B
P/N 39622
 Stern drive installation gasket kit for Alpha one and gen 2 years (1983 – present)

 

27-94996T2

$12.95

$15.89

shift shaft

87561 Shift shaft bushing kit

Item 3
P/N 87561
 Shift shaft bushing kit (serial numbers F094774 & below)

23-805041A2

$43.89

$56.89

gasket

31160 Gasket

Item 4
P/N 31160 Rubber gasket

27-35982

$4.00

$4.00

82200 O-ring

Item 5
P/N 82200
 O rings (5)

25-33504

$9.89

$12.89

21666

21666

Item 6
P/N 21666
 Washer

 

12-35935

$4.00

$4.00

21170

21170

Item 7
P/N 21170
 Lock nuts (5)

 

11-13439-1

$14.89

$19.89

Mercruiser Bell Housing

28410

Item 7B
P/N 28410
 Flange lock nut

11-859135

$4.00

$4.00

89050

89050

Item 8
P/N 89050
 U-joint bellows (includes clamps)

 

60932A4

$41.89

$54.89

Mercruiser Bell Housing

89440 Grounding clip

Item 9
P/N 89440
 Grounding clip (5 units), needed to prevent clamps from rusting

 

54-86049

Mercruiser Bell Housing

01100 Hose clamp

Item 10
P/N 01100
 Hose clamp

 

54-815504372

$6.00

$7.00

47120

47120

Item 11A
P/N 47120
Water hose 5/8 inch I.D.

32-32461

$8.00

$10.00

47110

47110 Water hose

Item 11B
P/N 47110
3/4 inch water hose

32-41725-33

$11.89

$14.89

Mercruiser Bell Housing

01071

Item 12
P/N 01071
Clamp

912627

$4.00

$4.00

Bell Housing Drawing

89100 Exhaust bellows

Item 13

P/N 89100 Exhaust bellow

18654A1

$24.89

$31.89

Mercruiser Bell Housing

89150

Item 13B
P/N 89150
Exhaust tube

78458A1

$44.89

$57.89

Mercruiser Bell Housing

01070

Item 14
P/N 01070
Clamp

54-815504348

$6.89

$8.89

Mercruiser Bell Housing

21420

Item 16
P/N 21420
Shaft assembly

45589A3

$88.89

$115.89

21421 INTERMEDIATE SHIFT SHAFT

21421

Item 16
P/N 21421
 Shift shaft

$59.89

$77.89

21422 washer

21422

Item 18
P/N 21422
Washer

12-32666

Mercruiser Bell Housing

21140 Mercruiser shift arm

Item 19
P/N 21140
Lever assembly

45518A2

$31.89

$40.89

21750

21750 Screw

Item 20
P/N 21750
 Screw

 

10-45590

$4.00

$6.89

cotter pin

22100 Cotter pin

Item 17
P/N 22100
Cotter pins (5 units)

18-32665

$4.00

$6.89

Mercruiser Bell Housing

30040

Item 21
P/N 30040
Washer

12-39116

$4.00

$4.00

Mercruiser Bell Housing

21950 Bellows kit

Item 22
P/N 21950
 Transom parts service kit for Mercruiser outdrives with exhaust bellow (1973 – 1990, serial numbers 3469428 – 0D469858)

30-803097T1

$169.89

$220.89

Mercruiser Bell Housing

21951

Item 23
P/N 21951
Bellows kit includes exhaust tube, fits same years as above

30-803098T1

$231.89

$301.89

21450 Mercruiser Outdrive Part 865436A03

21450 Parts that are included:

21080 Mercruiser slide
21090 Set screw
21140 Shift cable arm
21430 Guide
21433 Set screw
21462 Shift wire wrapping
21463 Insert
21464 Wire
21432 Anchor
21710 Cable
89080 Bellow
21750 Set Screw
21790 Bellow clip
21791 Hose clamp
39622 Gasket kit

$89.95

$118.95

21080 Shift slide

21080 Shift cable slide not included with the shift cable assemblies and kits. 

Customers also purchased:

Price
(USD)

Price (Canadian)

12110 Water pump kit

P/N 12110
lower unit water pump kit
1970 – 1983, serial numbers 2763442-6854392

Parts included:

12312 46-57234T1 Base
12410 46-96148T1 Housing
12510 32435-1 Wear Plate
12820 23-29804T Guide Tube
21330 25-30271 Slinger
31010 27-85608-1 Gasket
31020 27-858524 Gasket
31040 27-856704 Gasket
31170 (2) 12-19183-3 Gasket
81160 25-30613 O-ring
85140 26-45577-1 Seal
89840 47-89984T4 Impeller

$51.89

$66.89

Mercruiser Bell Housing

87500 Mercruiser upper housing gaskets

P/N 87500 Seal kit

1964 – 1990 models

serial numbers
(1684188 – 0D469858)

26-32511A1

$29.89

$39.89

Mercruiser Bell Housing

87501

P/N 87501 Alpha 1 Generation 2

upper gear housing seal / gasket kit

(1991 and up,
S/N 0A54004 – up)

26-88397A1

$32.89

$42.89

58232 GLM exhaust manifold kit 1983-2001

P/N 58232 Complete Mercruiser GM V8 manifold set with 4 inch riser.
Included

P/N 51230 Cast iron manifold assembly
860246Q11 x 2
P/N 51140 07988A2 Elbow – riser (4 inch) x 2
P/N 31100 Gasket 27-33395 x 2
P/N 30240 Gasket 27-863724 x 2
P/N 13991 90 degree hose fitting 22-806926 x 2
P/N 13992 Drain plug 22-806608A02 x 2
P/N 80140 O-ring for plug 25-45253 x 2
P/N 22391 Stud 16-49545 x 8
P/N 21248 Locknut 11-46335 x 8

$972.89 US

$1263.89 CDN

51110 Elbow cast iron 3 inch

P/N 51110 Elbow with mounting gasket – 3 inch 15 degree at hose connection / 98504A3

Model, CID, Year and Serial number for small block GM engines

185 229 V6 1985-1986 6330183-6919655 (4bbl)

185 262 V6 1985-1986 0A331455-0B527954 (2bbl)

205 262 V6 1985-1986 S/N 0A331455-0B527954

200 305 V8 1985-1987 S/N 6899058-0B525981

228 305 V8 1983-1995 S/N 6218462-0F600999

230 305 V8 1985-1987 S/N 6899269-0B525981

898 305 V8 1983-1984 S/N 6218462-68990571

260 350 V8 1983-1987 S/N 6218462-0B773304

260 350 V8 1981-1987 S/N 5907058-0F024999

$147 US

$194 CDN

51110 Elbow cast iron 3 inch

P/N 51110 Elbow with mounting gasket – 3 inch 15 degree at hose connection / 98504A3

Model, CID, Year and Serial number for small block GM engines

185 229 V6 1985-1986 6330183-6919655 (4bbl)

185 262 V6 1985-1986 0A331455-0B527954 (2bbl)

205 262 V6 1985-1986 S/N 0A331455-0B527954

200 305 V8 1985-1987 S/N 6899058-0B525981

228 305 V8 1983-1995 S/N 6218462-0F600999

230 305 V8 1985-1987 S/N 6899269-0B525981

898 305 V8 1983-1984 S/N 6218462-68990571

260 350 V8 1983-1987 S/N 6218462-0B773304

260 350 V8 1981-1987 S/N 5907058-0F024999

$147 US

$194 CDN