Oil Seal Crankshaft - Mercury / Mariner 3.5-60 HP (1981-1983, 1985-1986, 1997, 2000, 2002, 2004-2005, 2007-2008, 2010, 2012-2014) OEM# 26-66301 | WSM 550-33

Oil Seal Crankshaft Mercury / Mariner 3.5 - 60 Hp 70-14 OEM# 26-66301

This WSM oil seal crankshaft is a quality aftermarket replacement part designed for Mariner 1 Cyl 3.5 and 23 other compatible models.

It replaces selected OEM reference numbers including 26-66301 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 26 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 550-33
• Product: Oil Seal Crankshaft
• OEM Reference: 26-66301
• Application: Mariner 1 Cyl 3.5 and 23 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 1 Cyl 3.5 – All Years
• Mercury 1 Cyl 3.6 – 1983-1985
• Mercury 1 Cyl 4.5 – 1980-1982
• Mercury 2 Cyl 2.875 Bore Cross Flow 40 – 1975-1985
• Mercury 2 Cyl 7.5 – 1980-1983
• Mercury 2 Cyl 9.8 – 1970-1986
• Mercury 3 Cyl 2.955 Bore Looper 50 – 1970-1985
• Mercury 3 Cyl 2.955 Bore Looper 60 – 1991-1997
• Mercury 3 Cyl 2.992 Bore 55 – 1991-1997
• Mercury Mercury – 1991-2007
• Mercury 3 Cyl 4 Stroke 30 – 1998-2007
• Mercury 3 Cyl 4 Stroke 35 – 2008-2010
• Mercury 3 Cyl 4 Stroke 40 – 2009-2014
• Mercury 3 Cyl Bigfoot 60 – 2007-2013
• Mercury 3 Cyl Jet 40 – 1997-2004
• Mercury 3 Cyl Jet 45 – 2001-2005
• Mercury 4 Cyl 2.565 Bore Cross Flow 30 – 1991-2000
• Mercury 4 Cyl 2.565 Bore Cross Flow 40 – 1989-1997
• Mercury 4 Cyl 2.565 Bore Cross Flow 45 – 1989-1997
• Mercury 4 Cyl 4 Stroke 50 – 1981
• Mercury 4 Cyl 4 Stroke 60 – 2001-2002
• Mercury 4 Cyl 4 Stroke EFI 40 – 2001-2002
• 4 Cyl 4 Stroke EFI 50 – 2001-2012
• 4 Cyl 4 Stroke EFI 60 – 2002-2008
• 2002-2008
• 2001-2002

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:

• Water Pump Impeller Force / Mercury / Mariner 30 - 75 Hp OEM# 47-19453 – 700-230
• Water Pump Kit Complete Force / Mercury / Mariner / Mercruiser 30 - 300 Hp OEM# 18-3570 – 750-155
• Water Pump Kit Complete Force / Mercury / Mariner 30 - 125 Hp OEM# 43026T9 – 750-156
• Drain Plug Gasket Johnson / Evinrude / Mercury / Mariner / Mercruiser / Force / OMC 5 - 300 Hp OEM# 0307552 – 555-11

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