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OMC parts drawing *Cobra *Mercruiser *Alpha SEI outdrives
Johnson/Evinrude & Mercury outboard motors lower units
Mercruiser/Alpha
1/Generation 2 outdrive drawings
OMC Cobra stern drive, Electric shift & 400/800 OMC parts
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Search by part number or description here
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Click item listed below for exploded view parts drawing
OMC Cobra parts / Outdrive years 1986 to 1993 |
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Cobra upper gearcase
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Lower unit exploded view
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Transom | shifter parts
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400/800 outdrive parts 1978 to 1985 |
Upper gearcase components 1978-1985 |
Lower unit parts drawing
Select 3.375 or 4.250 inch hub size
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Stringer electric shift upper lower unit years 1972 to 1977 |
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Gearcase seal kit
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Stringer electric shift
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Gear head assembly
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Mercruiser outdrive parts years 1970 to 1983
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Mercruiser lower gearcase
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SEI-106 V8 350-305 Chevy motor
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SEI lower unit
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Mercruiser Alpha One outdrive 1984 to 1990 |
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upper gearcase
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Mercruiser Alpha 1 lower unit
parts drawing
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SEI-106 Mercruiser Alpha 1 upper gear case
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SEI 106 Aftermarket lower unit
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Mercruiser Alpha 1 Gen 2 outdrive components 1991 & up |
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Alpha One Gen 2 Upper Unit
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SEI 116 sterndrive replacement
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SEI 116 Mercruiser Alpha One Gen 2 |
V6-V8 Mercruiser exhaust manifold-riser applications
*Engine bellows applications
4.3 to 5.7 liter
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Mercruiser exhaust manifold
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Riser screws & gasket
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Mariner / Mercury outboard parts
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Mercury outboard parts
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Seal kit 35-70 hp.
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gear set
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Gear and bearing puller
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Evinrude/Johnson water pump and seal kits
New lower unit
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Gear sets
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Johnson seal kits
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Johnson/Evinrude outboard parts 9.9 & 15 hp 1974-2006
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(2 Cylinder)
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(2 Cylinder)
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In-line fuel filter.375 hose |
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What,s New - SEI Marine products including aftermarket Mercruiser Alpha One and generation 2 outdrive boats
- Have a new aftermarket OMC Cobra and OMC
400/800 parts for lower unit gear case
- Upper - lower units gear-case are OEM outdrive replacement for both Mercury
and Johnson / Evinrude
- We carry all inboard-outboard upper gear case gear ratios for Outboard Marine Corporation 4
cylinder, 6 cylinder and V8 engines up to 300 horse power
- Upper unit can come with and without the 9 9/16” long
yoke on the upper drive shaft.
- Our complete drive shipped in two pieces and will require an installation kit the includes
nut kit, mounting gasket and mounting bolts. Other accessories like anodes and shift cables need to be ordered separate
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New Mercruiser Repair Tools - Mercruiser repair tools including P/N Keen 75057 3" Scotch-Brite polishing wheel. Used for the inside upper gearcase bearing area on Alpha
1 and Alpha One Gen 2 outdrives. Scotch-Brite area must be cleaned with lacquer thinner to remove small particles and allows
bearing, yoke and gear assembly to side in to upper gearcase. Note polishing and cleaning wheel will require the use of any
1/4 " or larger electric drill and should be use at highest rpm setting.
- Piston ring installer is used to line
up a bearing during bearing and yoke installation
- 3/16 inch retainer wrench that's painted black. Spanner nut wrench
and bearing retainer wrench installs and removes drive shaft bearing retainer on MC-1 / R / MR / Alpha 1 / Alpha 1 Gen 2,
Blackhawk, and Bravo OEM: 91-17256
- Universal puller plate. Pulls gears and bearings OEM: 91-37241
- Seloc manuals
for Alpha one or generation 2
- Complete rebuild package for 1.50 / 1.47 gear ratio for V8 models 20 / 22 tooth count for years 1974 to 1990 serial numbers (3856268-0D469858)
Parts included:
11210 Gear set
87500 Seal kit
39590 Mounting gasket
21560 Bearing, 21520 Bearing and
21510 Bearing
23260 Shims, 23270 Shims and 23280 Shim set
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Sterndrive Repair - 400/800 Series upper gearcase OMC repair including sandblasting, ball gear bearing shims, driven gear bearing shims and plastic ball gear retainer shim kit
- Boat
repair price listed on rebuild and re-manufactured gear cases with quick shop turn around times. Any questions please contact
order desk for details
- Gear cases are painted with two coats zinc chromate primer and two coat of epoxy white paint
or color match metallic paint.
- All gear ratios available for 400/800 and Stringer model upper units for years 1970
to 1985
- Pricing includes left or right handed worm gear with half moon steering gear installed with the top cap
- Includes
all labor, welding bearings, seals, replacement ball gear, water pump assembly kit parts
- Note - additional OMC parts may be required
if necessary. Please see parts breakdown page for additional part pricing
- OMC Cobra sterndrive repairs and OMC parts
- We have common new and used boat parts in stock for electric shift lower units years 1968 to 1977
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GLM Marine Products - Serving both the United States and Canada, Boat parts.ca
offers a full range of parts including used outdrives and electric shift units
- Outdrives for the Cobra, Stringer and 400, 800 OMC sterndrive units
Electric Shift Outdrive parts - We specialize in 400-800 Electric shift repairs and parts, Cobra and Mercruiser upper gear case and lower unit repairs / rebuilds and carry a full line of used parts
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also carry a full line of GLM Marine aftermarket Mercruiser / Alpha 1 outdrive units. Johnson, Evinrude, Yamaha and Mercury
outboard parts
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