Gasket Exhaust Plate - Mercury / Mariner 105-200 HP (1991, 1995, 1998-1999, 2012-2014, 2018) OEM# 27-19050 | WSM 521-31

Gasket Exhaust Plate Mercury / Mariner 105 - 200 Hp OEM# 27-19050

This WSM gasket exhaust plate is a quality aftermarket replacement part designed for Mariner 6 Cyl 3.125 Bore 2L 135 and 18 other compatible models.

It replaces selected OEM reference numbers including 27-19050, 27-190503 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: 521-31
• Product: Gasket Exhaust Plate
• OEM Reference: 27-19050, 27-190503
• Application: Mariner 6 Cyl 3.125 Bore 2L 135 and 18 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 6 Cyl 3.125 Bore 2L 135 – All Years
• Mercury 6 Cyl 3.125 Bore 2L 150 – 1991-1999
• Mercury 6 Cyl 3.375 Chrome Bore 2.4L 175 – 1991-1999
• Mercury 6 Cyl 3.375 Steel Bore 2.4L XR-4 150 – 1991-1999
• Mercury 6 Cyl 3.375 Steel Bore 2.4L XR-4 175 – 1991
• Mercury 6 Cyl 3.501 Bore 2.5L 200 – 1991
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 150 – 1991-1999
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 175 – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1991-1999
• Mercury Mercury – 1991-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Jet 110 – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Jet 140 – 2006-2013
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 135 – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 150 – 1998-2012
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 175 – 1998-2014
• Mercury 6 Cyl 3.501 Bore 2.5L XR6 150 – 2004-2014
• Mercury 6 Cyl 3.501 Bore 2.5L XRI 200 – 1992-1998
• 6 Cyl 3.6265 Bore 3L Pro XS 150 – 1992-1995
• 6 Cyl 3.6265 Bore 3L Pro XS 175 – 2010-2018
• 2008-2018

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.

About the Mercury 135-200 HP Outboard Engines

Mercury and Mariner 135-200 HP outboard engines are widely used across recreational and performance boating applications. These engines have long-standing aftermarket support, making quality replacement gaskets, ignition, fuel and powerhead parts important for service and rebuild work.

You May Also Need

Browse related parts for compatible models:

• Propeller Shaft Mercury / Mariner 105 - 225 Hp OEM# 44-94148 – 449-122
• O-Ring End Cap Mercury / Mariner / Mercruiser 90 - 485 Hp OEM# 25-62700 – 526-19
• Gasket Divider Plate Mercury / Mariner 110 - 240 Hp OEM# 27-190506 – 521-32
• O-Ring End Cap Mercury / Mariner / Mercruiser 70 - 240 Hp OEM# 25-54029 – 526-18

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