OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives

Mercruiser Alpha One Gen 2 outdrive parts *SEI outdrive

GLM aftermarket Mercruiser Alpha One generation 2 outdrive
Replacement parts *Sterndrive repairs *Rebuild costs

Last updated on 9/20/2023

Part lookup by OEM number or description on home page
Click image below for exploded view diagram

Transom Kits

Water pump kits

Seal Kits

Exhaust Manifold

Mercruiser generation 2 upper gearcase 1998 up


Trim tab anode

Engine water circulation pump

Propeller nut

Mercruiser Alpha One Gen 2 upper 1991-1997

Water separating fuel filter kits

Mercruiser thermostat kit

Bearing Carrier

Lower Unit

Mercruiser Alpha 1 Gen 2 lower unit

Top cover assembly

Engine coupler

Drive Shafts


Alpha 1 generation 2 bell housing layout


U-joints and yokes


Shift Cables

Trim cylinder bushing kits

Carburetor repair kits


Engine overhaul gasket set

Upper gearcase replacement or repair cost

Alpha 1 generation 2 Gimbal housing

Mercruiser Alpha 1 Gen 2


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


We stock new and used Mercruiser outdrive parts. Alpha 1 or gen 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 gen 2 exhaust manifold kits and more.


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.

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

Shipping Locations

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

Tech Support

Technical support available from our Toronto, Canada location.

Payment Methods

Visa, Master-card.

Pay-Pal, International money order, bank transfer.