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Cobra 3-3/4" lower unit OMC parts drawing

3-3/4 inch propeller hub years 1986 to 1990. Lower gearcase stern drive parts drawing 1 to 31

  • Exploded drawing shows internal 3-3/4 inch prop hub parts and their relationship with other smaller gearcase stern drive parts.
  • Contact our service tech for help with troubleshooting your OMC Cobra outdrive parts.

OMC Cobra lower gearcase 1985-1995

OMC Cobra lower gearcase 1985-1995

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OMC parts description

87655 OMC Gearcase seal kit
87655 OMC Gearcase seal kit
P/N 87655 Seal kit for 4 cylinder Cobra lower unit gearcases with smaller propeller hub of 3-3/4 inch inside diameter years 1986 to 1989 with 3 Litre and 1987 to 1990 with 2.3 litre OEM 985612 $49.89

22880 Roller bearing
22880 Roller bearing

Item 2
P/N 22880 Drive shaft roller Torrington for 4 cylinder Cobra lower unit gearcases with smaller propeller hub of 3-3/4 inch inside diameter years 1986 to 1989 with 3 Litre and 1987 to 1990 with 2.3 litre OEM-384195 $23.89

21885 screen
Item 3
P/N 21885
Screen OEM 337778 $16.95

22363 Screw
22363 Screw
Item 4
P/N 22363 Screw OEM 337061 $4.95

21679 Washer
21679 Washer
Item 5
P/N 21679 Washer $4.95

27720 detent
27720 detent
Item 6
P/N 27720 Detent OEM 915954 $61.89

27750 cover seal
27750 cover seal
Item 7
P/N 27750 Cover seal assy.OEM 986838 $47.89

22375 Screw
22375 Screw
Item 10
P/N 22375
Screw OEM 304027 $4.95

86620 Water tube seal
86620 Water tube seal
Item 12
P/N 86620 Seal OEM 911705 $5.89

12960 OMC water pump tube

12960 Water pump tube

Item 13
P/N 12960 Tube OEM 911706 $31.89

12961 guide
12961 guide
Item 14
P/N 12961 Guide OEM 911715 $6.89

27760 Water Passage Housing
Item 15
P/N 27760 Water passage housing. OEM 915720 $116.95

 
Item 16
P/N 22404 Upper drive shaft OEM 911709 $199.89

21180 lock nuts
21180 lock nuts
Item 17
P/N 21180 Nuts, 5 units. OEM 121731 $14.89

22362 bolt
22362 bolt
Item 21
P/N 22362 Screw OEM 121731 $4.95

27770 Bearing housing
27770 Bearing housing
Item 22
P/N 27770 Bearing hsg. OEM 984462 $109.89

23590 Shims
23590 Shims
Item 24
P/N 23590 Shim .003 OEM 323362 $9.99

23580 OMC shim
23580 OMC shim
Item 24
P/N 23580 Shim .004 OEM 323361 $10.89

23510 OMC shim
23510 OMC shim
Item 24
P/N 23510 Shim .005 OEM 314745 $10.89

21645 thrust washer
21645 Thrust washer
Item 25
P/N 21645 Thrust washer OEM 327656 $14.89

16330
16330
Item 26
P/N 16330 Thrust bearing OEM 387656 $38.99

12962 plug
12962 plug
Item 27
P/N 12962 Plug OEM 911710 $4.95

11190 Pinion nut
11190 Pinion nut
Item 29
P/N 11190 Nut OEM 314730 $6.89

22630 OMC Cobra 400 gears and clutch set
22630 OMC Cobra 400 gears and clutch set
Item 30
P/N 22630 Pinion, clutch, forward and reverse gears for 4 cylinder Cobra lower unit gear cases with smaller propeller hub of 3-3/4 inch inside diameter years 1986 to 1989 with 3 Litre and 1987 to 1990 with 2.3 litre $499.89

22631
22631
Item 30B
P/N 22631 Pinion and forward gears for 4 cylinder Cobra lower unit gear cases with smaller propeller hub of 3-3/4 inch inside diameter years 1986 to 1989 with 3 Litre and 1987 to 1990 with 2.3 litre $508.95

22632 Reverse gear
22632 Reverse gear
Item 31
P/N 22632 Reverse gear for 4 cylinder Cobra lower unit gear cases with smaller propeller hub of 3-3/4 inch inside diameter years 1986 to 1989 with 3 Litre and 1987 to 1990 with 2.3 litre OEM 345992 $139.95

12774 Anode
12774 Anode
Item 32
P/N 12774 Anode OEM 3853818 $34.89

 
Item 31
P/N 018-61020 Magnesium anode $29.09