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

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

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 $999.99 or $1249.95
SEI SE109 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 $1199.95 P/N SE109 New aftermarket lower unit large gear housing assembly with 3 year warranty. Compatible with 1986-1992 OMC Cobra V6 and V8 models (non King Cobra models). Includes shipping within the US, and updated thrust washer for propeller. This unit comes installed with a heavier duty 1-1/4" prop shaft. $1449.89. No trade in required. P/N 28820R Click here for fully remanufactured lower units 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 $460.00 will be refunded after we receive your unit.
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 $67.89 Click on seal kit for a list of items included in kit
39630 Gasket kit	P/N 39630 Outdrive gasket kit OEM 439967 $9.95
21610 OMC Pinion bearing	Item 2 P/N 21610 Pinion bearing OEM-387817 $43.99
21885 Screen	Item 3 P/N 21885 Screen OEM-337778 $16.95
22363 Screw	Item 4 P/N 22363 Screw OEM-337061 $4.95
21679 Washer	Item 5 P/N 21679 washers $4.95
27720	Item 6 P/N 27720 Detent OEM-915954 $61.89
27750 cover seal	Item 7 P/N 27750 Cover and seal assembly OEM-986838 and 914925 $47.89
22375 Screw	Item 10 P/N 22375 Screw OEM-304027 $4.95
86620	Item 12 P/N 86620 Seal OEM-911705l $4.95
12960 Copper tube	Item 13 P/N 12960 Tube OEM-911706 $31.89
12961 guide	Item 14 P/N 12961 Guide OEM-911715 $6.89
27760 OMC Water passage housing	Item 15 P/N 27760 Water passage housing OEM-915720 $99.99
22404 upper drive shaft	Item 16 P/N 22404 Upper drive shaft OEM-911709 $199.89
21180 lock nuts	Item 17 P/N 21180 Nut (5 units) OEM-121731 $14.89
	Item 18 P/N 21673 washer (5 units) OEM-305981
33970 gasket	Item 19 P/N 33970 Gasket water passage OEM-915719 $5.95
22362 bolt	Item 21 P/N 22362 Screw OEM-121731 $4.95
# 27770 Bearing Housing	Item 22 P/N 27770 Bearing housing OEM-984462 $109.89
	OMC Cobra rebuild kit years 1986-1987-1988-1989-1990