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Upper Gear Sets

Click here to determine your outdrive gear ratio

These upper rebuild kits come from GLM Marine.

They includes all of the necessary gears, bearings, shims and seals to rebuild the upper gear housing on all #1 Pre-Alpha, Alpha One and Generation II drives but we will need to know the size of your engine and year of your drive so we can send you the correct seals, gears and bearings.

The gears are manufactured by GLM Marine. Some of the bearings come from Timken and some come from the Koyo Bearing Company located in Japan.

Click below for tools req.

Manuals
Shimming tools.
Upper spanner wrench.
Preload checking extension.

These kits weigh 11 pounds.

Please include your engine size, year of drive & drive serial # when ordering gear sets

Older Style Upper Gears

This 1.98r upper gear set is not available from any aftermarket company. They have to come directly from MerCruiser.

Notice that there are splines inside of the vertical gear. The post ( shown below ) which fits in here has a nut on the top of the post which fits into the top cover.

The 1.98 set shown here is MerCruiser p/n 43-36219A1. It has 20 teeth on the horizontal gear and 24 teeth on the vertical gear.

Notice that there are splines inside of the vertical gear. This post fits in here and has a nut on the top of the post which fits into the top cover.

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Precision Services, Inc.
Shelby Township, Michigan 48316

Monday - Friday 9:00AM - 5:00PM EST

Last modified: May 09, 2008