Mercruiser Alpha 1 tools *Outdrive repair video

GLM Marine aftermarket repair tools for Mercruiser, MR, Alpha One and Generation 2 outdrives use with both
upper - lower gearcase, and bell housing

Last updated on 12/08/2023, 01:17:46

  • race seal driver
  • carrier
  • Prop shaft adaptor
  • Retainer wrench
  • Pinion nut adaptor
  • Driven and drive gear shimming
  • Pinion gear shimming
  • Bearing installation
  • Lower unit oil pump
  • Puller rod
  • Drive and adaptor
  • Shift shaft bushing
  • Shift cable bushing
  • Prop wrench kits
  • Engine alignment
  • See our MerCruiser repair tools page
  • Exploded view Mercruiser parts drawings
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90095 Alpha 1

90095 Alpha 1 bearing carrier puller

GLM after-market parts prop and carrier puller.

Used for the old and new style carriers and most prop.
Maximum capacity is 5 tons.


P/N 90095 carrier puller $104.99

90050 Engine alignment tool

Engine alignment
P/N 90050 Engine alignment $139.99

6312 outdrive race seal driver

Bearing race and seal driver set, makes it easier to insert race and seals without damaging race and surrounding housing.
This set includes 9 drivers to fit most standard units and comes in a molded storage case.


YF 6312 Outdrive seal driver $79.89

90190 carrier retainer wrench

GLM retainer wrench, removes and installs retainer nuts on the lower unit. 91-61069T


P/N 90190 Carrier retainer wrench $112.99

90230 prop adaptor

Provides a wrench surface to turn the propeller.
P/N 90230 Prop adaptor $45.99

90065 Propeller wrench

Prop wrench. 1-1/16″ with prop nut and 2 tab washers. Also works with Mercury, Mariner. Force V4 & V6. Mercury: 91-82818871 Honda: 89-89206-ZW7-000AH

P/N 90065 Prop wrench kit $23.99

90100 retainer wrench

retainer wrench, installs and removes retainer 91-17256
P/N 90100 retainer wrench $88.99

90210 pinion nut adaptor

Pinion nut adaptor kit Holds pinion nut when removing the pinion gear and drive shaft on the lower unit 91-61067A3

Note above includes P/N 90220 drive shaft adaptor.


P/N 90210 Pinion nut adaptor set $187.99

90180 drive gear shimming tool

Driven gear shimming. Used to measure the upper driven gear clearance 91-60526T
P/N 90180 Driven gear shimming $199.99

90160 pinion gear shimming

Pinion gear shimming. Measures the pinion height 91-56048T


P/N 90160 Pinion gear shimming $255.99

90260 Alpha 1 bearing installation tool

GLM parts pinion installation tool.
Design provides a more precise fit to the pinion (paper cone must be removed) to avoid crooked seating of the bearing that can cause gears to break or make noise.
Outer diameter of top part of the tool is 1.1250″ with a tolerance of +/-0.0010. #91-38628T


P/N 90260 Pinion bearing installation $39.95

lower unit oil pump

Lower unit oil pump for quart bottle, with 4cc pump and 3/8″ – 16 swivel metal fitting.
Flexible hose for hard to reach plugs, and adaptor for all stern drive units.

P/N 401-11245-1 Oil pump $14.99

90280 puller rod

Puller rod. Used with #90260 pinion installation and #90270 driver head to install and remove pinion bearing. 91-31229
P/N 90280 Puller rod $28.95

QM50A 5 minute epoxy

90220 adaptor

Drive shaft adaptor, provides a wrench surface to turn. 91-56775T
P/N 90220 adaptor $39.99

90170 drive gear shimming

Drive gear shimming tool. Measures upper drive gear clearance on MC-1/R/MR/Alpha 1 and Generation 2 upper units. 91-60523
P/N 90170 Drive gear shimming $190.95

90240 retainer wrench

Drive shaft bearing retainer wrench, removes and installs threaded retainer on MR/Alpha 1 and Generation 2 stern drives. OEM 91-43506
P/N 90240 Drive shaft retainer wrench $44.99

90140 Alpha 1 shift shaft bushing tool

Shift shaft bushing removes and installs the bushing in lower gear case. 91-31107T
P/N 90140 Shift bushing $39.99

90200 Alpha 1 hinge pin tool

Hinge pin tool. Used to remove and install hinge pins from stern drives. OEM 91-78310
P/N 90200 Hinge pin $20.99

90295 removal installation

Pinion bearing removal and installation.

This assembly installs and removes the pinion on stern drive units.
Assembly includes: #90260 pinion installation, #90270 driver head, #90280 puller rod and #90290 spacer.


P/N 90295 Pinion bearing assembly $99.99

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Water pump kit 12120 GLM

P/N 12120 Alpha 1 lower unit water impeller kit .Compatible with 1984-1990 models. Includes housing. Replaces Sierra 18-3320. $42.99