Mercruiser outdrive parts *SEI lower unit *Alpha 1 repairs

Mercruiser exploded view parts drawing click here
Part lookup by OEM number or description

Click Mercruiser parts image below for
GLM Marine exploded view diagram

Lower gearcase	Upper gearcase technical drawings
Gimbal housing drawings	Mercruiser bell housing layout
Trim cylinder and hoses 1983 to 1990	Trim cylinder parts repair kit
Lower Units	Upper gearcases

Transom Kits	GLM Marine or Sierra Alpha one seal kits	Water pump kits
Exploded View Parts Drawings	Shift Cables	11215 Mercruiser V8 upper gearcase service kit
Bellows	Mercury marine bearings	Gears
Exhaust manifold kit	V8 350 Exhaust manifold	Upper gearcase service tools
Outdrive tools	Drive shafts	Trim Cylinder Hoses
Outdrive shift cable and parts	Repair Costs	Water separating fuel filter kit
24980 Fuel filter kit	Anode Kits
Alpha 1 or Generation 2 for 4bbl and 2bbl carburetor kit	21731 Drain plug	Inline fuel filter
Mercury Marine outboard water pump	Gimbal bearing	90065 Prop wrench kit
Engine carburetor kit	Mercruiser engine coupler	Mercruiser engine rebuild kits

What,s New

SEI Marine products including aftermarket Mercruiser Alpha One and generation 2 outdrive boats
Have a new aftermarket OMC Cobra and 800 lower unit gear case
Seloc manuals for Mercury marine inboard outboard sterndrive, Johnson/Evinrude and Mercury marine outboard motors
Upper - lower units gear-case are OEM outdrive boat replacement for both Mercury Marine and OMC Johnson/Evinrude
We carry all inboard-outboard upper gear case gear ratios for 4 cylinder, 6 cylinder and V8 boat engine 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 sterndrives anodes and shift cables need to be ordered separate. Mercury marine outboard manuals.

New Repair Tools

Mercruiser marine 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 Generation 2 outdrives. Scotch-Brite area sterndrive 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 on the sterndrive bearing area at highest rpm setting.
Piston ring installer is used to line up a bearing during bearing and yoke installation
3/16 inch retainer wrench thats 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 generation 2, Blackhawk, and Bravo OEM: 91-17256
Mercruiser sterndrive universal puller plate. Pulls gears and bearings OEM: 91-37241
Seloc manuals for Alpha one or generation 2 at this time we do not carry the original mercury outboard or Alpha sterndrive manuals, how ever they can access the 1 year down loaded online.

Complete rebuild Mercruiser sterndrive package for 1.50 / 1.47 gear ratio for V8 350 mag engines models 20 / 22 tooth count for years 1974 to 1990 engine serial number (3856268-0D469858)
Sterndrive parts included:

GLM Marine part number 11210 Gear set
GLM part number 87500 Oil seal kit
GLM part number 39590 Mounting gasket and o-ring parts
GLM part number 21560 Bearing, 21520 Bearing and 21510 Bearing
GLM part number 23260 Shim kit, 23270 Shim kit and 23280 Shim kit set

Shipping

Our standard shipping rate is for FedEx 2 day express to the United States and Central Canada for 5 lbs or less. Overnight express, and ground shipping is also available. We also ship to all of Europe, the UK, Australia and New Zealand.

Mercruiser Parts

We stock new and used Mercruiser outdrive parts. Alpha 1 or generation 2 (all years) components. There is an on line schematic to locate gear sets, water pumps and upper-lower gearcase bearings. Exploded view drawings show seal kit parts included, engine gasket sets and Alpha 1 or generation 2 exhaust manifold kits and more. Mercury marine outboard manuals.
Repairs

We offers repairs to upper gear housing units and lower unit gear case units. New Sterndrive We carry new replacement stern drive units, complete with a 2 year warranty. No core charge required.

Manifold & Elbow Assembly Note

Make sure all gasket surfaces are clean, free of grease and install the new engine water hose fittings in manifolds. Tighten securely and position opening towards front of engine, facing slightly outboard (approx. 10-15 degrees).
Install the new exhaust manifolds with the new gaskets. Torque the screws to 33 ft.lbs. (45Nm) for cast iron manifolds (see Fig. 2).
Install the starboard water hose and tighten hose clamp securely.
Route the port water hose beneath the engines power steering pump and install on hose fitting. Tighten hose clamp securely (see Fig. 3).
Ensure the water shutters are in good condition and installed in the lower Y-pipe.
Install plugs in new exhaust elbows tighten securely and apply sealant to the threads of the elbow to manifold screws.
Install the elbows to the manifolds using the new gaskets and screws (see Fig. 4). Torque the screws to 33 ft.lbs. (45Nm) for cast iron elbows.
Connect the engine side intermediate elbows to the elbows with the tubes and clamps included in the kit. Tighten clamps securely.

GLM aftermarket V8 manifolds

Separating exhaust Gas Pulses All V8 engines have a firing order that fires two cylinders within 90 degrees of each other on the same bank of cylinders.
With a firing order of 1-8-4-3-6-5-7-2, we have #8 and #4 firing on the starboard side of the engine within 90 degrees of crankshaft rotation.
On the port side, we have #5 and #7 firing within 90 degrees of crankshaft rotation of each other.
Of course, this also means that the gases for these cylinders immediately discharge into the manifold one after the other.
At this point, when the two cylinders fill the manifold in immediate succession, the manifold becomes overwhelmed with gases, creating excessive back pressure.
In fact, excessive back-pressure from an over whelmed exhaust system will not only keep spent gases from leaving the cylinder head exhaust port, but in certain ports,gases from adjacent cylinders may find their way back in.
The solution is to isolate each gas pulse for as long as possible in the exhaust manifold.
There are aftermarket manifold manufacturers that go to great lengths to isolate each exhaust pulse the full length of the manifold, and there are some that barely address the problem at all.
Choosing a high performance manifold that isolates each runner is the key to building horsepower with the exhaust system.

Shipping Locations

Monrovia, California 91016 USA.
Toronto, Ontario M1R 5G2 Canada

Authorized GLM dealer

Technical Support by video

Technical support available from Wayne at our Toronto, Canada location
Search on Google for YouTube videos by Wayne Coll or T.C.Electronics/Marine
there is about 72 boat repair video in total as of 2019 there is no charge to view

Sample of sterndrive videos

Mercruiser Outdrive Bellow & Shift Cable Repairs 647,893 views
Water pump removal and repair video 320,210 views
How do I remove my Alpha 1 gen 2 lower unit 76,349 views

Payment Methods

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