Bearing Reverse Gear - Mercury / Mariner / Mercruiser / Yamaha 110-300 HP (1999-2001, 2004-2007, 2009-2010, 2012-2014, 2017-2018, 2021) OEM# 31-88957T | WSM 447-308

Bearing Reverse Gear Mercury / Mariner / Mercruiser / Yamaha 110 - 300 Hp OEM# 31-88957T

This WSM bearing reverse gear is a quality aftermarket replacement part designed for Mariner 4 Cyl 4 Stroke 150 and 38 other compatible models.

It replaces selected OEM reference numbers including 31-88957T and is suitable for service, repair and rebuild work.

Key Features

• Quality replacement component for service and rebuild work
• Designed for dependable fitment and durable performance
• Suitable for restoring smooth operation and reducing wear
• Compatible with 41 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 447-308
• Product: Bearing Reverse Gear
• OEM Reference: 31-88957T
• Application: Mariner 4 Cyl 4 Stroke 150 and 38 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 4 Cyl 4 Stroke 150 – All Years
• Mercruiser 6 Cyl 2.5L XS 200 – All Years
• Mercury 6 Cyl 3.125 Bore 2L 150 – 2009-2021
• Mercury 6 Cyl 3.501 Bore 2.5L 135 – 2001-2006
• Mercury 6 Cyl 3.501 Bore 2.5L 200 – 2000-2005
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 150 – 2000
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 175 – 2000-2005
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2000-2010
• Mercury Mercury – 2000-2004
• Mercury 6 Cyl 3.501 Bore 2.5L Jet 140 – 2000-2006
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 115 – 2006-2013
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 135 – 2000-2005
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 150 – 2000
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 175 – 2000-2012
• Mercury 6 Cyl 3.501 Bore 2.5L Pro Max 200 – 2000-2014
• Mercury 6 Cyl 3.501 Bore 2.5L Pro Max 225 – 2001-2014
• Mercury 6 Cyl 3.625 Bore 3L 225 – 1999
• Mercury 6 Cyl 3.625 Bore 3L EFI 200 – 1998-2004
• Mercury 6 Cyl 3.625 Bore 3L EFI 225 – 1999-2001
• Mercury 6 Cyl 3.625 Bore 3L EFI 250 – 2002-2007
• Mercury 6 Cyl 3.625 Bore 3L Pro Max 300 – 1999-2007
• Mercury 6 Cyl 3.625 Bore 3L XB 250 – 1999-2007
• Mercury 6 Cyl 3.6265 Bore 2.5L Pro XS 150 – 1998-2005
• Mercury 6 Cyl 3.6265 Bore 2.5L Pro XS 175 – 2000-2004
• Mercury 6 Cyl 3.6265 Bore 3.2L XS 300 – 2010-2018
• Mercury 6 Cyl 3.6265 Bore 3L Optimax 200 – 2008-2018
• Mercury 6 Cyl 3.6265 Bore 3L Optimax 225 – 2006-2017
• Mercury 6 Cyl 3.6265 Bore 3L Optimax 250 – 2000-2007
• Mercury 6 Cyl 3.6265 Bore 3L Optimax 300 – 2000-2018
• Mercury 6 Cyl 3.6265 Bore 3L Pro XS 225 – 2003-2014
• Mercury 6 Cyl 3.6265 Bore 3L Pro XS 250 – 2015-2018
• Yamaha 6 Cyl 3L Carb Sea Pro 225 – 1999-2007
• Yamaha 6 Cyl 3.544 Bore 76 Degree 200 – 2006-2018
• Yamaha 6 Cyl 3.544 Bore 76 Degree 225 – 1999-2001
• Yamaha 6 Cyl 3.544 Bore 76 Degree 250 – 1998-2005
• Yamaha 6 Cyl 3.660 Bore 3.3L HPDI 200 – 1994-2004
• Yamaha 6 Cyl 3.660 Bore 3.3L HPDI 225 – 1990-2004
• Yamaha 6 Cyl 3.660 Bore 3.3L HPDI 250 – 2005-2010
• 6 Cyl 3.660 Bore 3.3L HPDI 300 – 2003-2009
• 2003-2009
• 2004-2010

Why Buy WSM

WSM is a trusted manufacturer of aftermarket marine and powersports parts, known for dependable quality, strong fitment coverage and workshop-ready replacement components.

You May Also Need

Browse related parts for compatible models:

• O-Ring Crankshaft Chrysler / Force / Mercury / Mariner / Mercruiser / Yamaha 6 - 300 Hp OEM# 25-90011 – 526-13
• O-Ring Oil Pump Mercruiser / Mercury / Mariner 30 - 300 Hp 90-21 OEM# 25-48462 – 526-22
• O-Ring End Cap Mercury / Mariner / Mercruiser 90 - 485 Hp OEM# 25-62700 – 526-19
• Tilt Tube Stainless Steel Mercury / Mariner / Force 65 - 300 Hp OEM# 826125A1 – 986-165

Please use the fitment guide, OEM references and images to confirm this is the correct part before ordering.