OMC 800/Cobra parts *Outdrive drawings *How to videos

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OMC Cobra parts 1 to 24 upper gearcase layout

Upper gearcase exploded view parts drawing years
1986 to 1992

  • Exploded drawing shows internal parts and their relationship with the stern drive unit.
  • Detailed step by step OMC stern drive illustrations will aid making repairs to your outdrive.
  • If help is required, contact our service tech for help with your OMC stern drive repair at (416) 751-7326. Please have horsepower and year of stern drive boat ready when calling.
  • You can print 3 or 4 pages to have your own upper gearcase parts list.

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Cobra upper gear case layout

Cobra upper gear case layout

rebuilt
rebuilt

New upper gear housing assembly $1795.29
Please see our Cobra complete upper gear case page for a complete selection of upper gear housing assemblies.

29930R upper
29930R upper

Used upper unit $1195.09 with trade in please see our used upper gearcase page

Rebuilt upper gear housing assembly with new
Yoke water pump shaft, gears and bearings $1495.29 with trade in please see our rebuilt upper gearcase page

OMC assembly 21-16
OMC assembly 21-16

Click here for details on our complete rebuild sets

P/N 22-522-2 Complete 21/16 upper gear set or 5.7 liter marine engine 1986 to 1993. $1199.15

P/N 22-532-2 Complete 21/17 set for 5.0 litre Chevy marine engine 1986 to 1993 $1249.15

P/N 22-562-2 Before 1988 complete 21/18 upper for 5.0 liter V8 Ford or 3.0 litre 4-cylinder small hub lower unit marine engine years 1986 and up $1299.15

P/N 22-542-2 4.3 Liter V6 (21/19) upper years 1986 to 1993 $1199.15

87654 seal kit
87654 seal kit
P/N 87654 Seal kit / 987603, 986364 $35.09

Included
81180 O-Ring
86530 Oil seal
82380 O-Ring
34771 Gasket
82430 O-Ring
81280 O-Ring
86610 Oil seal
34730 Gasket
33910 Gasket
81100 O-Ring

29900 Used OEM 984518
29900 Used OEM 984518
Item 1

P/N 29900 New empty upper Cobra gear housing $709.29

P/N 29900 Upper gearcase assembly / 984518 (Used) $369.95

22520 ratio 21-16
22520 ratio 21-16
22560
22560
22540 Aftermarket gears V6 ratio 21-19
22540 Aftermarket gears V6 ratio 21-19
Item 2

P/N 22520 Gear set 21:16 ratio for V8 / 983825 $699.15

P/N 22560 21:18 gear ratio V8 / 983826 $699.15

P/N 22540 Gears 21:19 ratio V6 / 984012 $699.15

P/N 22544 Gear set 21/17 ratio V8 5.0 liter, 305 Chevy 5.8 liter and 351 E.F.I. Ford 7.5 liter 460 V8 / 983635 $699.15

21540 Bearing
21540 Bearing
Item 3

P/N 21540
Timken roller bearing / 983891 $34.09

21541
21541
Item 4

P/N 21541 Bearing / 983892 $41.09

28460 Pinion nut
28460 Pinion nut
Item 5

P/N 28460 Pinion nut / 911753 $29.09

28318 Drive Shaft Parts
28318 Drive Shaft Parts
Item 6

P/N 28325
Drive shaft U joint and water pump shaft assembly / 983880 $413.09

28315 Yoke
28315 Yoke
Item 8

P/N 28315 Yoke drive shaft / 912212 $100.09

28030 U joint
28030 U joint
Item 9

P/N 28030 u joint heavy duty / 915717 $40.00

28100 Socket
28100 Socket
Item 10

P/N 28100 Socket / 3852565 $42.09

28320 Water Pump Shaft
28320 Water Pump Shaft
Item 11

P/N 28320 Yoke & water pump impeller shaft / 984264 $245.09

86520
86520
Item 12

P/N 86520 Oil seal / 911685

 
Item 13

P/N 82380 O ring / 911686

21542
21542
Item 14

P/N 21542 Timken roller bearing / 983877 $65.09

22525 Centering cone OEM 912029
22525 Centering cone OEM 912029
Item 15

P/N 22525 Centering cone / 912029 $28.09

28470 nut
28470 nut
Item 16

P/N 28470 U joint nut / 911937 $17.09

21543
21543
Item 17

P/N 21543 Roller bearing / 983878 $41.09

 
Item 18

P/N 34771 Gasket / 911698

 
Item 19

P/N 82430 O ring / 911700

12092 Aftermarket water pump
12092 Aftermarket water pump
Items 22 to 30

P/N 12092
Water pump kit $49.15

Included
Wear plate, 89950 Impeller, 12391 pump, 86630 seal and pump housing including the 34770 Gasket.

89950 Impeller
89950 Impeller
Item 24

P/N 89950 Impeller OEM-983895 $13.09
(Included water pump kit P/N 12092)Click here for our Cobra impeller removal & installation video

 
Item 25

P/N 12391 Water pump liner / 911844 included water pump set.

39630 Outdrive Installation
39630 Outdrive Installation

Item 27

P/N 39630 Outdrive gasket installation kit OEM-508105 $9.15

Exploded view parts drawing 27 to 53