OMC parts 800 / Cobra outdrive drawings * How to videos

T.C. Electronics/Marine (416) 751-7326 Home Page

OMC Cobra parts drawing *V6-V8 Lower unit 1-22

Co-Manufacturer & distributor for GLM aftermarket parts
4-1/4 inch OMC stern drive drawing and video

  • GLM Marine aftermarket lower gear case drawing shows internal 4-1/4 inch hub components and their location.
  • In 1991 some unit have the redesigned with a stronger propeller shaft 1-1/4 inch in diameter. This shaft GLM Marine part number 22417 requires a thrust washer between the shaft shoulder and the reverse gear. The bearing carrier was also changed with 2 hold down tabs and two 5/16 inch bolts. This type of bearing carrier will only work for years 1991 and newer housings with notches for hold down tabs.
  • At time of printing we have only used original OMC bearing carriers years 1986 to 1990 with four 1/4 inch N.F. bolts pattern that requires retainer plate and two internal retainer rings.
  • Contact our order desk or service tech for help with any rebuild or OMC parts kit (416) 751-7326.

OMC Cobra lower gear case drawing years 1986-1995

OMC Cobra lower gear case drawing years 1986-1995

If purchasing any pinion gear or drive shaft we will shim item including shims at no charge.
You be required to cover cost of shipping.

If you require this service please contact order desk to place order or send in both items with copy of the bill.
Service includes sand blasting and polishing pinion and shaft tapper areas.

Please click here for New or rebuilt stern drives. We do have a suggested item list for repairs.

Items 1 - 22

Component description

 
P/N Cobra Complete lower unit rebuild kits
V6 / V8 with or without propeller shafts years 1986 to 1993 $730.29 or $1048.29
28820 Cobra lower unit
28820 Cobra lower unit
Item 1
P/N 28800 Empty lower unit gear-case years 1991 to 1993 style replacement.
Case includes bearing carrier that is for a 1-1/4 inch prop shaft OEM-439972 $949.89

P/N 28820 New lower unit large gear housing assembly with heavy duty gears $2359.15 *plus trade in. No trade in, please add core charge to shopping cart in addition to the pricing for lower unit. Core charge of $360.00 will be refunded after we receive your unit.

P/N 28820R Click here for fully REMANUFACTURED lower units with original OEM 1-3/16" propeller shaft and OMC brand OEM gears $1595.00 *plus trade in. No trade in, please add core charge to shopping cart in addition to the pricing for lower unit. Core charge of $360.00 will be refunded after we receive your unit.

87656 seal kit
87656 seal kit

P/N 87656 Seal kit for larger bearing carrier hub of 4-1/4 inch inside diameter lower unit. Years 1986 to 1993 with V6-4.3 and 3.8 liter, V8-5.0, 5.7 or 5.8 liter and 3 liter 4 cylinders with large hub years 1990 to 1993 $52.95

Click here for a list of items included in kit

39630 Gasket kit
39630 Gasket kit
P/N 39630 Outdrive gasket kit OEM 439967 $9.95

21610
21610
Item 2
P/N 21610 Pinion bearing OEM-387817 $35.95

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

22363 Screw
22363 Screw
Item 4
P/N 22363 Screw OEM-337061 $4.09

21679 Washer
21679 Washer
Item 5
P/N 21679 washers $3.95

27720
27720
Item 6
P/N 27720 Detent OEM-915954 $55.09

27750 cover seal
27750 cover seal
Item 7
P/N 27750 Cover and seal assembly OEM-986838 and 914925 $39.95

22375 Screw
22375 Screw
Item 10
P/N 22375 Screw OEM-304027 $3.95

86620
86620
Item 12
P/N 86620
Seal OEM-911705l $3.95

12960 Copper tube
12960 Copper tube
Item 13
P/N 12960 Tube OEM-911706 $25.95

12961 guide
12961 guide
Item 14
P/N 12961
Guide OEM-911715 $4.95

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

22404 upper drive shaft
22404 upper drive shaft
Item 16
P/N 22404
Upper drive shaft OEM-911709 $179.95

21180 lock nuts
21180 lock nuts
Item 17
P/N 21180
Nut (5 units) OEM-121731 $5.09

 
Item 18
P/N 21673
washer (5 units) OEM-305981
33970 gasket
33970 gasket
Item 19
P/N 33970 Gasket
water passage OEM-915719 $3.96

22362 bolt
22362 bolt
Item 21
P/N 22362
Screw OEM-121731 $3.95

# 27770 Bearing Housing
# 27770 Bearing Housing
Item 22
P/N 27770
Bearing housing OEM-984462 $91.95

 
TC101 OMC rebuild kit
TC101 OMC rebuild kit