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Rebuild component pictures	OMC Cobra parts included in kit GLM P/N and OEM numbers
lower unit parts kit	Click here for kit information and pricing
21610 installation 21610 pinion bearing	2 GLM P/N 21610 Drive shaft pinion gear bearing OEM 387817 should be installed with wording readable. The words read this side up. Bearing outside-case must have packing grease removed. Bearing has .003 tapper lead to help when installing. When installing, if bearing has no resistance or lose when pushed into gearcase location, bearing must be removed and cleaned. Then 680 loctite must be applied to outside of bearing case before installing again.
87656 Lower unit seal kit oem 439967	P/N 87656 OMC Cobra 4-1/4 inch large hub lower unit seal kit OEM 387817 kit contains the following items that may require the addition of compounds before the installation process. Oil seals require 680 loctite coating on outside diameter of the stainless steel surface area. Gaskets and o-rings requires Johnson outboard gasket sealing compound. The bearing carrier o-ring groove needs sealing compound coating before installing o-ring, then compound applied to outside on o-ring. Wiper seal requires gasket compound on outside and any type of wheel bearing grease placed on the inside area. Lower tube guide seal requires coating of gasket compound. Upper tube guide and one end copper tube should be installed in upper gear-case with 680 loctite. This should be applied 2 hr or more before placing upper-lower gear-cases together. The other end of copper tube should be grease so unit can slide into plastic receiver guide listed as number 14 on drawing. Note: Mix can of OMC Evinrude Johnson gasket sealing compound well before using and place on gasket 24 hr before and again just before installing parts
27720 Detente OEM 915954	6 P/N 27720 Detent is a shifter bearing assembly upgrade made by OMC in 1991. Upgrade as listed below OEM 915954 Will allow shifter rod assembly to find centre of forward and reverse location. The old version had 1/8 inch or more play when moving shifter rod in neutral location. This now allows the installer to measure base to top of rod end receiver. This neutral or centre reading should be 7-.156 inches or 8 turns. Upgrade has built in tapper lead on both side of detent. This allows shifter rod to go into forward and reverse gear with about 7 to 10 lbs. Old detent shifter rod was about 15 to 20 lbs to move rod. Modification now places less pressure on shift cable. Less wear on clutch dog and forward gears as shift cable sides in and out of gear easier. Shift cable life expectancy with modification will last longer with 10 lbs less pressure on metal cable when changing gears.
12961 guide	14 P/N 12961 Guide Inside area of guide side should be greased. Bottom area should have gasket sealing compound to hold guide in place during assembly
27770 bearing housing 984462	22 GLM P/N 27770 Bearing housing assembly OEM 984462 Shim drive shaft and pinion bearing Grease inside bearing and place the three o-ring in the groves then add OMC gasket sealing compound on o-rings Place smaller 2 inch o-ring on smaller grove and add sealing compound
23510 shims 314745	24 GLM P/N 23590 2 units of shim .003 OEM 323362 GLM P/N 23580 2 units of Shim .004 OEM 323361 GLM P/N 23510 2 units of Shim .005 OEM 314745 Please see shimming video or send parts required in for our tech to shim for you.
16330 thrust bearing 387656	26 P/N 16330 Thrust bearing OEM 387656 Required for shiming drive shaft and pinion gear
OMC part number 0987670 22623 gear set 987670	30 OEM P/N 987670 Original OMC Cobra parts pinion gear, nut and forward gear set included in kit for V8 Chevy / Ford motors. GLM Marine P/N 22623 Forward / pinion set included in rebuild kit for 4.3L V6 Chevy motor.
21731 drain screw 318544	41 GLM P/N 21731 Magnetic draining screw with seal OEM 318544 two drain plugs are included in this kit.
22910 bearing 389039	47 GLM P/N 22910 Forward gear bearing for lower unit gear-case OEM 389039 Clean outside of case with lacquer thinnerInstall so you can read writing on bearing after instillation Retaining grease is required to keep pins in-place during installation Add oil to free up bearing after forward gear-prop shaft is installed.
21646 Thrust washer	55 GLM P/N 21646 Forward gear thrust washer OEM 327669
16340 thrust bearing	56 GLM P/N 16340 Forward gear-retainer thrust bearing OEM 389042
11052 clutch dog spring 324369	59 GLM P/N 11052 Clutch dog spring OEM 324369
22414 prop shaft 395209	60 GLM P/N 22414 Prop shaft OEM 395209 1-3/16 inch years 1986 thru 1990 GLM P/N 22417 Prop shaft OEM 5004765 1-1/4 inch years 1991 thru 1993
16300 thrust bearing	62 GLM P/N 16300 Thrust bearing OEM 382408
21642 thrust	63 GLM P/N 21642 Thrust washer OEM 314731
11410 drive shaft bearing	67 GLM P/N 11410 Prop shaft-bearing carrier bearing OEM 387247. Years 1986-1987-1988-1989 and 1990 out-drives with 1-3/16 inch drive shaft. Install so you can read writing on bearing after instillation.
22870 bearing	86 GLM P/N 22870 Bearing carrier reverse gear bearing OEM 382407 Install so you can read writing on bearing after instillation

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