Alpha One & Gen 2 Outdrive Parts *Drawings *Videos

GLM Marine aftermarket Mercruiser parts

Last updated on 8/12/2023, 1:17:46 AM

Mercruiser Alpha One and Gen II tech support
Exploded view diagrams Click here
Printer friendly help pages
Search by part number or description here

Click image below for Mercruiser alpha parts


Seal Kits

Bellows Kits

Water Pumps

Alpha one generation II lower parts drawing


Shift Cable


Complete Seal and Bearing Kits

Mercruiser Alpha One Gen II upper gearcase parts drawing

U Joints / Yokes


bearing carrier

Prop shaft

Alpha 1 & Gen 2 bell housing parts layout

Drive shaft

Gimbal Bearing

Anode trim tab

Trim Connectors

Alpha One or gen 2 gimbal housing parts

Used Alpha One parts

Engine coupler

Lower unit pinion / forward gear

Mercruiser exhaust manifold

Complete lower gear set

SEI Mercruiser Alpha One gen 2 outdrive

SEI Alpha 1 gen 2 upper

Engine gasket kit

Engine Components

Alpha lower unit rebuild kit

11236 Upper service kit 17-19 gear ratio Gen. 2

Alpha One lower unit complete

Trim cylinders and hoses

Mercury Parts

Alpha One upper gearcase parts drawing

Mercruiser Alpha One lower unit parts

Gearcase Repairs

Tech support includes repair cost for Mercruiser Alpha One and Generation 2 outdrives.


Tech support includes repair tools. Illustrations to identify outdrive components with technical support by phone.


48 hour service when required on outdrive units.

Special deal of the summer

Complete outdrive units now available from SEI aftermarket parts.

  • Mercruiser R Mr
  • Alpha One gen I
  • Alpha One gen II

Aluminum propeller all sizes

I Need Help Page

To identify parts page was added to help simplify locating drawings. Exploded view pages have illustrations and photos of each component.

Pages take time to download due to large detailed diagrams with 40 to 60 photos.

Sterndrive Tools

We stock tools for removal of components such as bearing carriers. Bearing retainers and special wrenches for outdrives.

Web pages listed dedicated to
  1. Alpha One years 1984 to 1990
  2. Alpha One Gen II years 1991 and up

Need more R MR sterndrive information or photos, please see the I need help drawings page.

Web site pages are designed for the factory certified technician, the boat mechanic or just boating enthusiasts performing their own repair work.

Drawings are divided into eight sections: upper gearcase, lower gearcase, Alpha One Gen II upper gearcase, lower gearcase, transom components, hydraulic hoses and the

Bell housing components.

  1. trim cylinder parts
  2. trim cylinders

GLM products are high quality cost effective aftermarket parts for sterndrive.


Tech support drawings illustrations

  • 65 repair video on YouTube
  • Help to identify Mercruiser and Alpha 1 or Generation 2
    and identify your Mercury and Yamaha lower units.

What’s New ?

Seloc repair manuals for Chrysler, Force, Yamaha, Mariner, Mercury and Johnson outboards. Volvo penta, OMC stern drive books.

Sea water pumps GM V6 / V8 Engine thunderbolt IV and V distributors.

Delco ignition module-sensor assembly.

Repair tools

Coming Soon

Yamaha water pump kits and components with inboard / outboard engines.

Johnson pump OEM to GLM conversion table.

Click on GLM Catalog to see picture-listing.

Used Mercruiser Parts

We stock used stern drive components. We also stock used stern drives for the boating enthusiasts who wants to keep repair costs down.

GLM Products Inc Catalog

GLM Catalog

Includes Crusader, Chris craft, Yamaha, OMC, Volvo, and Alpha One stern drive components with illustrations.

The online catalog is comprised of PDF files. In order to view them, you need Acrobat Reader.
You can download Acrobat Reader free from Adobe.

Once the catalog is opened on your screen, you can view pages by GLM number or print them.

Web Pricing

All web pricing in US funds