Sierra / Mallory

Additional Details:

• For: Alpha One Gen II

Interchanges/Replaces

Mercruiser Stern Drive

• 53-815949

Key Features:

• Presses bearing cone onto Alpha One/Gen II drive shaft housing pinion gear

Interchanges/Replaces

Mercury Marine

• 91-90774

Additional Details:

• For: Mercury 15-25 2 cyl.

Interchanges/Replaces

Mercury Marine

• 27-43337
• 27-433371
• 27-433372
• 27-433373
• 27-433374
• 27-43337A1
• 27-96286

Interchanges/Replaces

GLM

• 30700

Mercury Marine

• 27-60945
• 27-66102
• 27-661021

Additional Details:

• Fits: IA/IB/IC & EZ Shift (1964-1966)

Interchanges/Replaces

Mercruiser Stern Drive

• 27-35996
• 27-35996A1

Additional Details:

• Fits: IA/IB/IC & EZ Shift (1964-1966)

Interchanges/Replaces

Mercruiser Stern Drive

• 27-35996
• 27-35996A1

Interchanges/Replaces

GLM

• 32530

Mercury Marine

• 27-78068
• 27-99177
• 27-991771
• 27-991772

Key Features:

• V-6

Interchanges/Replaces

GLM

• 32510

Mercury Marine

• 27-67074
• 27-88727
• 27-99173
• 27-99173 2
• 27-991731
• 27-991734

List of Containing Parts

Sierra Item #	OE/Competitor #	Quantity	Description	Image	Comments
18-2343	Chrysler/Force/US Marine 12-92721 12-F694186 GLM 32800 Mallory 9-78108 Mercruiser Stern Drive 12-92721 Mercury Marine 12-92721	1	Pinion Nut Washer		N/A
18-3719	Chrysler/Force/US Marine 11-35921 11-826375 11-F694188 GLM 11190 Johnson/Evinrude Outboard 314730 Mallory 9-78103 Mercruiser Stern Drive 11-35921 Mercury Marine 11-35921 11-47411 11-826375 OMC Stern Drive 314730	1	Pinion Nut		N/A

Additional Details:

• O.D.: 1.474" or 37.4mm
• Shaft Size: 1.045" or 26.5mm
• Width: 0.187" or 4.7mm

Interchanges/Replaces

Chrysler/Force/US Marine

• 26-43036

GLM

• 85170

Honda Outboard

• 91254-ZW1-003

Mercury Marine

• 26-43036

Use With:

• 18-1344: Needle Bearing

Interchanges/Replaces

Johnson/Evinrude Outboard

• 439476

Interchanges/Replaces

GLM

• 21649

Johnson/Evinrude Outboard

• 333771

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-52393

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-37311

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-37312

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-36379

Key Features:

• Removes and installs bearings

Additional Details:

• Compatible Outboard Gear Cases: MC-I, R-MR, Alpha One, Alpha One/Gen II, and all Bravo

Interchanges/Replaces

Mercury Marine

• 91-32336

Key Features:

• Installs the small roller bearing in the gimbal housing of MC-I, R-MR & Alpha One drive units

Interchanges/Replaces

Mercury Marine

• 91-33489

Key Features:

• Installs needle bearing in forward gear and removes and installs seals and bearing in gimbal housing

Interchanges/Replaces

Mercury Marine

• 91-33491

Key Features:

• Removes and installs lower swivel pin needle bearing in gimbal ring on drive units

Interchanges/Replaces

Mallory

• 9-45616

Mercury Marine

• 91-33492
• 91-33492T