OMC Parts / OMC Cobra Stern Drive Tech Drawings

OMC Cobra parts lower gearcase with stern drive drawing

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GLM aftermarket OMC Cobra parts for
4-1/4 inch hub located in lower unit gearcase
Stern drive drawing and video for years 1986 thru 1995

  • OMC Cobra parts drawing shows internal 4-1/4 inch hub components and their location in the large gearcase.
  • In 1991 some unit have the redesigned stronger propellor shaft of 1-1/4 inch diameter. This shaft (GLM # 22417) requires a thrust washer (GLM # 21651) between shaft shoulder and the reverse gear. Bearing carrier (GLM #11408) was allso changed with 2 hold down tabs and two 5/16 NC bolts. This type bearing carrier will only work on 1991 and newer housings with notches for hold down tabs.
  • At time of printing we have only used OMC bearing carriers with four 1/4 inch N.F. bolts that requires retainer plate and two internal retainer rings.
  • Contact our service tech for help with troubleshooting your OMC outdrive or ordering parts (416) 751-7326

Click Here for OMC Cobra Parts (lower gearcase)
W OMC Cobra lower gearcase 1985 1995.jpg
Click on Outdrive to Order OMC Cobra Parts on line

Photo
Item #
OMC parts description
1986 - 1993 Lower unit rebuid kits
T-TC101-omc-rebuild-kit.jpg
 

# COB-RB Complete lower unit rebuild kits

V6 / V8 with or without propeller shafts (1986 - 1993) 

 $730.29 - $1048.29
 

1991 thru 1993
T-28800 Cobra lower unit gearcase.jpg
28800 Cobra lower unit gearcase
 

# 28800 Empty Lower unit gearcase (1991 thru 93 style replacement) OEM # 439972 $949.89

Case includes propeller bearing carrier with bearing for 1-1/4" prop shaft


 

T 28820 cobra lower unit.jpg
28820 full lower gearcase
 

#28820 Complete lower unit large gear housing assembly with heavy duty gears $1849.09 *plus trade in*

For more information, see our complete lower page


No trade in, please add core charge to shopping cart in addition to the below pricing for lower units. Core charge will be refunded after we recieve your unit. Core charge $360.00

T-87656-Lower-seal-kit.jpg
# 87656 Seal kit
B

# 87656 Seal kit OEM # 439967 for larger bearing carrier hub of 4-1/4 inch inside diameter gearcase. Years 1986 thru 1993 with (V6 - 4.3L and 3.8L) or (V8 - 5.0L, 5.7L, 5.8L) and (3L - 4 cylinder: large hub) 1990 thru 1993 marine engines $51.09

T 39630 Gasket kit OEM 508105.jpg
# 39630 Gasket kit
C

# 39630 Outdrive seal kit OEM # 439967  $6.09

T-21610-M-Drive-shaft-bearing.jpg
# 21610 Drive shaft bearing
# 2

# 21610 Pinion bearing
OEM# 387817 $32.09

T-21885-screen.jpg
# 21885 Screen
# 3

# 21885 Screen
OEM# 337778 $10.09

T-22363-Screw.jpg
# 22363 Screw
# 4

#22363 Screw
OEM# 337061 $4.09

T 21679 Washer.jpg
21679 Washer
# 5

N/A

T-27720A-Detente.jpg
# 27720 Detent
# 6

# 27720 Detent
OEM # 915954 $55.09

T-27750-cover-seal.jpg
# 27750 Cover & seal assy.
# 7

# 27750 Cover & seal assy.
OEM # 986838 $36.09

T 22375 Screw.jpg
22375 Screw
# 10

# 22375 Screw $4.09
OEM # 304027

T-86620-Water-tube-seal.jpg
# 86620 Water tube
# 12

# 86620 Seal $4.09
OEM # 911705

T-12960-Copper-water-pump-tube.jpg
# 12960 Tube
# 13

# 12960 Tube $23.09
OEM# 911706

T-12961-guide.jpg
# 12961 Guide
# 14

# 12961 Guide $4.09
OEM# 911715

T-27760-Water-Passage-Housing-Cobra.jpg
# 27760 Water passage hsg.
# 15

# 27760 Water passage hsg. $67.09
OEM# 915720

T 22404 upper drive shaft.jpg
22404 upper drive shaft
# 16

# 22404 Upper drive shaft  $164.09
OEM# 911709

T-21180-lock-nuts.jpg
# 21180 Locknuts
# 17

# 21180 Nut (5 units) $5.09
OEM# 121731

 
# 18

# 21673 washer (5 units) N/A
OEM # 305981

T 33970 gasket.jpg
33970 gasket
# 19

# 33970 Gasket water passage $4.09
OEM # 915719

T 22362 bolt.jpg
# 22362 bolt
# 21

# 22362 Screw $4.09
OEM# 121731

T-27770-Bearing-housing.jpg
# 27770 Bearing hsg.
# 22

# 27770 Bearing hsg. $83.09
OEM# 984462

T-23590-Shims.jpg
# 23590 Shim .003
# 24

# 23590 Shim .003 $4.09
OEM# 323362

T-23580-Shims.jpg
# 23580 Shim .004
# 24

# 23580 Shim .004 $4.09
OEM# 323361

T-23510-Shims.jpg
# 23510 Shim .005
# 24

# 23510 Shim .005 $4.09
OEM# 314745

T-21645-Trust-washer.jpg
# 21645 Thrust washer
# 25

# 21645 Thrust washer $7.09
OEM # 327656

T-16330-Trust-bearing.jpg
# 16330 Thrust bearing
# 26

# 16330 Thrust bearing $25.09
OEM# 387656

T-12962-plug.jpg
# 12962 Plug
# 27

# 12962 Plug $4.09
OEM# 911710

T-22406-Lower-drive-shaft-aftermarket-omc-parts.jpg
# 22406 Lower drive shaft
# 28

# 22406 Lower drive shaft $212.09
OEM# 911693

T 11190 pinion shaft nut.jpg
# 11190 pinion shaft nut
# 29

# 11190 Nut $4.89
OEM# 314730

     
T-22623-Forward-pinion-gear-14-26-ratio.jpg
# 22623 P/Forward gear set
# 30

# 22623 P/Forward gear set $291.09

OEM# 987670

OMC-part-number-0987670.JPG
OMC part number 0987670
# 30a

OEM P/N 987670 Original OMC Cobra part pinion gear, nut and forward gear set $479.09

   

     
T-22624-Reverse-OEM-336561-910994.jpg
# 22624 Reverse gear
# 31

# 22624 Reverse gear (1986-1993) $199.09 OEM# 915273

T-12774-Anode.jpg
# 12774 Anode
# 32

# 12774 Anode $20.09
OEM# 3853818

 
# 32

# 018-61020 Magnesium anode (fresh water use) $29.09
OEM# N/A

T-12773-Anode.jpg
# 12773 Anode 4 cyl.
# 32

# 12773 Anode 4 cyl. $21.09
OEM# 983494

T-22365-T-Bolt.jpg
# 22365 Screw
# 33

# 22365 Screw 7/16 x 3 1/2-14 $13.09
OEM# 914535

T 21674 Washer.jpg
21674 Washer
# 34

# 21674 Washer $4.09
OEM# 330265

T-22366-T-Screw.jpg
# 22366 Screw
# 35

# 22366 Screw $4.09
OEM# 328096

T-22367-T-Bolt.jpg
# 22367 Screw
# 36

# 22367 Screw 3/8 x 3 1/2-16 $10.09
OEM# 330263

T 12776 Anode.jpg
# 12776 Anode
# 37

# 12776 Anode $9.09
OEM# 436745

T 22368 Bolt.jpg
22368 Bolt
# 38

# 22368 Screw $4.09
OEM# 313715

T 22369 Screw.jpg
22369 Screw
# 39

# 22369 Screw N/A
OEM# 912127

 
# 40

# 21761 Lockwasher N/A
OEM# 328701

W-21731-Mercruiser-oil-plug-drain-screw-washer.jpg
# 21731 Draining screw
# 41

# 21731 Draining screw $5.09
OEM# 318544

T-22371-T-bolt.jpg
# 22371 Screw
# 43

# 22371 Screw 3/8 x 1 3/4-16 $5.09
OEM# 331999

T-22185-Propeller-nut-kit.jpg
# 22185 Prop nut & keeper
# 44

# 22185 Prop nut & keeper $6.09
OEM# 398042

T-22142-cotter-pin.jpg
# 22142 Cotter pin
# 45

# 22142 Cotter pin (5 units) $4.09
OEM# 306394

T 27700 bearing housing with bearing.jpg
27700 bearing housing with bearing
# 46A

# 27700 Housing & bearing assy. $168.09
OEM# 389455

T 28481 Shaft bearing housing kit.jpg
28481 Shaft bearing housing kit
# 46b

# 28481 Shaft/detent/ball/cradle and bearing housing kit. $226.09 OEM # N/A

T-22910-Lower-OEM-389039.jpg
# 22910 Bearing
# 47

# 22910 Bearing $55.09
OEM# 389039

T-21138-Pin.jpg
# 21138 Pin
# 48

# 21138 Pin $4.09
OEM# 331880

T-21137-pin.jpg
# 21137 Pin
# 49

# 21137 Pin $4.09
OEM# 328825

T-22491-detent-ball.jpg
# 22491 Detent ball
# 50

# 22491 Detent ball $4.09
OEM# 160084

T-11055-Spring-OMC-Cobra-part.jpg
# 11055 Spring
# 51

# 11055 Spring $4.09
OEM# 915995

T-27730-Cradle.jpg
# 27730 Cradle
# 52

# 27730 Cradle $11.09
OEM# 982422

T-27710-shaft.jpg
# 27710 Shaft
# 53

# 27710 Shaft $61.09
OEM# 322941

T-27740-lever.jpg
# 27740 Lever
# 54

# 27740 Lever $27.89
OEM# 322938

T-21646-Thrust-washer.jpg
# 21646 Thrust washer
# 55

# 21646 Thrust washer $31.09
OEM# 327669

T-16340-Thrust-bearing.jpg
# 16340 Thrust bearing
# 56

# 16340 Thrust bearing $39.09
OEM# 389042

T-22625-Clutch-dog.jpg
# 22625 Clutch dog
# 57

# 22625 Clutch dog $95.09
OEM# 914716

T-21135-Cross-pin.jpg
# 21135 Cross pin
# 58

# 21135 Cross pin $4.09
OEM# 313448

T-11052-Spring.jpg
# 11052 Spring
# 59

# 11052 Spring $4.09
OEM# 324369

T-22414-OMC-Cobra-prop-shaft.jpg
# 22414 Prop shaft 1986-1990
# 60

# 22414 Prop shaft 1-3/16 inch 1986 thru 1990 $264.09
OEM # 395209
 

T-22417-prop-shaft.jpg
# 22417 Prop shaft 1991-1993
# 60

# 22417 Prop shaft 1-1/4 1991-1993 $265.09
OEM# 435022

T-21651-thrust-washer.jpg
# 21651 Thrust washer
# 61

# 21651 Thrust washer $12.09
OEM# 336565

T-16300-Thrust-bearing.jpg
#16300 Thrust bearing
# 62

# 16300 Thrust bearing $5.09
OEM# 382408

T-21642-Thrust-washer.jpg
# 21642 Thrust washer
# 63

# 21642 Thrust washer $11.09
OEM# 314731

T-11406-bearing-carrier.jpg
#11406 Bearing carrier
# 65

# 11406 Bearing carrier WITH TABS (1991-1993)

For use with 1-3/16" prop shaft $214.09
OEM# 438039

T 11408 Bearing carrier.jpg
#11408 Bearing carrier
# 65

# 11408 1-1/4 inch inside diameter bearing carrier 1991-1993 $209.09
OEM # 5000363

For use with # 22417 1-1/4 propeller shaft 

T-22870-Bearing.jpg
#22870 Bearing
# 66

# 22870 Bearing $16.09
OEM# 382407

T-11410-Roller-bearing-OEM-31-30956.jpg
#11410 Bearing 1986-1990
# 67

# 11410 Bearing 1986 thru 1990 $9.09
OEM # 387247

For 1-3/16 inch diameter prop shafts

T-22950-Bearing.jpg
#22950 Bearing
# 67

# 22950 Bearing 1991-1993 $20.09
OEM # 434467

use for 1-1/4 inch prop shafts 

T 85130 lower oil seal.JPG
#85130 lower oil seal
# 68A

# 85130 Oil seal 1986 - 1990 $7.09
OEM # 320862

T 86810 Oil seal.jpg
#86810 Oil seal
# 68B

# 86810 Oil seal 1991 - 1993 $10.09
OEM # 334950

T-12737-Anode.jpg
#12737 Anode
# 69

# 12737 Anode $12.09
OEM# 431708

T-22320-T-screws.jpg
#22320 Screw (5 units)
# 70

# 22320 Screw (5 units) $6.09
OEM# 908158

T-27850-tab.jpg
#27850 Retaining tab
# 71

# 27850 Retaining tab $20.09
OEM# 333957

T-22373-T-bolts.jpg
#22373 Screw 5/16 x 7/8-18
# 72

# 22373 Screw 5/16 x 7/8-18 $4.09
OEM# 341541

T-22221-Propeller-thrust-washer.jpg
#22221 Prop thrust washer
# 73

# 22221 Prop thrust washer $25.09
OEM# 126870

T-22190-Spacer.jpg
#22190 Prop spacer
# 74

# 22190 Prop spacer $11.09 OEM# 320570

T-21033-Shift-rod.jpg
#21033 Shift rod
# 75

# 21033 Shift rod   $52.09
OEM# 914736
 

T 21245 omc shifter nut.jpg
21245 omc shifter nut
# 76

# 21245 Nut $8.09
OEM# 914743

T 26440 Rod end.jpg
26440 Rod end
# 77

# 26440 Rod end $47.09
OEM# 914723

T 22388 Screw.jpg
# 78

# 22388 Screw $4.09
OEM# 308825

T-21032-Shift-rod-assembly.jpg
#21032 Shift rod assy.
# 79

# 21032 Shift rod assy. $75.09
OEM# 986658

T 22471 Stud.jpg
22471 Stud
# 80

# 22471 Stud $8.09
OEM# 911713

T 22472 stud.jpg
22472 stud
# 81

# 22472 Stud $8.09
OEM# 911714

T OMC Cobra propeller.jpg
OMC Cobra propeller
# D

# 741597 Propeller 14-1/4"diameter x 19 pitch (does not include hub kit) $119.09

See our aluminum propeller for a complete list of propellers and hub kits

T-OMC-800-Cobra-hub.jpg
22472 stud
# E

# 101 OMC prop hub $39.09
Fits 1-3/16" prop shaft (OMC Cobra V6 / V8 and 3.0L 1986 - 1990) 

 # 100 OMC prop hub $39.09
Fits 1-1/4" prop shaft (OMC Cobra V6 / V8 and 1991 - 1993)