Gasket Thermostat - Mercury / Mariner 40-60 HP 3 Cyl (1995, 2000, 2004-2005, 2007) OEM# 27-8128671 | WSM 540-26

Gasket Thermostat Mercury / Mariner 40 - 60 Hp 3 Cyl 91-07 OEM# 27-8128671

This WSM gasket thermostat is a quality aftermarket replacement part designed for Mariner 3 Cyl 2.955 Bore Looper 50 and 7 other compatible models.

It replaces selected OEM reference numbers including 27-8128671 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 9 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 540-26
• Product: Gasket Thermostat
• OEM Reference: 27-8128671
• Application: Mariner 3 Cyl 2.955 Bore Looper 50 and 7 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 3 Cyl 2.955 Bore Looper 50 – All Years
• Mercury 3 Cyl 2.955 Bore Looper 60 – 1991-1995
• Mercury 3 Cyl 2.992 Bore 55 – 1991-1995
• Mercury 3 Cyl 2.992 Bore 60 – 1999-2007
• Mercury 3 Cyl Bigfoot 60 – 1999-2007
• Mercury 3 Cyl Jet 40 – 1999-2004
• Mercury 3 Cyl Jet 45 – 2001-2005
• Mercury – 1991-1995
• 1999-2000

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
• Fuel Pump Mercury / Mariner 30 - 300 Hp 83-04 OEM# 14360A14 – 600-090-05
• Rectifier Mercury / Mariner 30 - 210 Hp OEM# 815279A – 365-5279
• Piston Clips Johnson / Evinrude / Mercury / Mariner 25 - 240 Hp OEM# 0317831 – 400-19

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