• OMC Cobra Lower Unit Parts15 to 29

OMC Cobra sterndrive lower unit drawing with water pump and seal kits

Updated April 12th 2026

• OMC Cobra 4 cylinder, V6 and V8 parts diagram
• 2 year manufacturer parts warranty
• Water pump housing, seals

OMC Cobra lower gearcase parts layout

OMC Cobra sterndrive lower unit 15 to 29

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Description

Price (USD)

Price (Canada)

27760 Water passage housing

15
27760

Water passage housing

located in lower unit.

$116.95 us 

$ 47.89cdn 

22404 T Cobra upper drive shaft

16
22404

Upper Drive shaft

$180.95 us

$ 279.89 cdn

21180 lock nuts

17
21180

Nuts ( 5 units )

$7.00 us

$4.89 cdn

21490 Washer for water passage

18 

Washer

Included in seal kit 

33970 Water passage gasket

19
33970

Gasket

Included in seal kit 

$4.00 us

$4.89cdn

81280 o ring 3 required

20
81280

O-ring

Included in seal kit

87656 OMC outdrive lower unit seal kit

20-B
87656

Lower unit gearcase seal kit

V6 4.3L or V8 5.0L, 5.7L, 5.8 liter 

$89.99 us

$123.99 cdn

87655 OMC lower gearcase seal kit 4 cylinder 2.3 liter

20-C
87655

Lower gearcase seal kit

for 2.3 liter, 3.0L 4 cylinder (1986-1989)

$49.99 us

$69.99 cdn

22362 Screw

21
22362

Screw

$4.99 us

$4.89 cdn

27770 T Bearing housing

22
27770

Bearing housing

$93.95 us

$ 142.89 cdn

81380 O ring

23
81380

O-ring (In seal kit)

23510 M outdrive Shims

24
23510

Shim .003″ – .005″

$5.00 us

$6.00 cdn

21645 T Thrust washer

25
21645

Thrust washer

$9.95 us

$ 6.89 cdn

16330 t thrust bearing

26
16330

Thrust bearing

$29.95 us

$ 49.89 cdn

12962 T Plug

27
12962

Plug

$5.00 us

$ 5.89 cdn

22406 T Lower drive shaft omc parts

28
22406

Lower drive shaft

$351.95 us

$ 256.89 cdn

11190 Pinion Nut

29
11190

Nut

$5.00 us

$5.89 cdn

Parts 30 - 45

46 - 59

60 - 82