Gasket Base - Mercury / Mariner 65-125 HP (1990, 1993, 2000, 2005-2006, 2012, 2014-2015) OEM# 27-430073 | WSM 510-29

Gasket Base Mercury / Mariner 65 - 125 Hp OEM# 27-430073

This WSM gasket base is a quality aftermarket replacement part designed for Mariner 3 Cyl 3.375 Bore Looper 70 and 18 other compatible models.

It replaces selected OEM reference numbers including 27-430073, 27-430075 and is suitable for service, repair and rebuild work.

Key Features

• Quality replacement gasket designed for dependable sealing performance
• Ideal for service, repair and engine rebuild work
• Manufactured for fit, durability and reliable installation
• Compatible with 20 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 510-29
• Product: Gasket Base
• OEM Reference: 27-430073, 27-430075
• Application: Mariner 3 Cyl 3.375 Bore Looper 70 and 18 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 3 Cyl 3.375 Bore Looper 70 – All Years
• Mercury 3 Cyl 3.375 Bore Looper 75 – 1987-1990
• Mercury 3 Cyl 3.375 Bore Looper 80 – 1987-1993
• Mercury 3 Cyl 3.375 Bore Looper 90 – 1987-1990
• Mercury 3 Cyl 3.500 Bore Looper 75 – 1987-1993
• Mercury 3 Cyl 3.500 Bore Looper 90 – 1994-2006
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 115 – 1994-2006
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 125 – 2004-2014
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 75 – 2006-2012
• Mercury Mercury – 2004-2014
• Mercury 3 Cyl 3.6255 Bore 1.5L Optimax 90 – 2006-2014
• Mercury 3 Cyl 3.6255 Bore Pro XS 115 – 2004-2014
• Mercury 3 Cyl 65 – 2010-2015
• Mercury 4 Cyl 3.375 Bore Looper 100 – 1994-2005
• Mercury 4 Cyl 3.375 Bore Looper 115 – 1985-1993
• Mercury 4 Cyl 3.500 Bore Looper 100 – 1989-1993
• Mercury 4 Cyl 3.500 Bore Looper 115 – 1994-2000
• 4 Cyl 3.500 Bore Looper 125 – 1994-2006
• 4 Cyl Jet 80 – 1994-2006
• 1994-2005

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 End Cap Mercury / Mariner 65 - 250 Hp OEM# 2406 – 526-14
• Lower Rod Bearing Mercury / Mariner 65 - 125 / 200 - 300 Hp OEM# 31-43012A04 – 010-151
• Gasket Water Pump Force / Mercury / Mariner / Mercruiser 40 - 300 Hp OEM# 27-817277 – 447-329
• Gasket Carburetor Mercury / Mariner 30 - 125 Hp OEM# 27-15172 – 516-17

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