Gasket Head Cover - Mercury / Mariner 135-200 HP 6 Cyl (1981-1982, 1988) OEM# 27-96278 | WSM 505-37

Gasket Head Cover Mercury / Mariner 135 - 200 Hp 6 Cyl 78-88 OEM# 27-96278

This WSM gasket head cover is a quality aftermarket replacement part designed for Mariner 6 Cyl 3.125 Bore 2L 135 and 8 other compatible models.

It replaces selected OEM reference numbers including 27-96278 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: 505-37
• Product: Gasket Head Cover
• OEM Reference: 27-96278
• Application: Mariner 6 Cyl 3.125 Bore 2L 135 and 8 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 – 1986-1988
• Mercury 6 Cyl 3.125 Bore 2L 175 – 1978-1988
• Mercury 6 Cyl 3.125 Bore 2L XR2 150 – 1976-1981
• Mercury 6 Cyl 3.375 Bore 2.4L 175 – 1986-1988
• Mercury 6 Cyl 3.375 Bore 2.4L 200 – 1981-1982
• Mercury 6 Cyl 3.375 Chrome Bore 2.4L 175 – 1978-1982
• Mercury 6 Cyl 3.375 Chrome Bore 2.4L 200 – 1983-1988
• Mercury – 1982-1988

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 Oil Pump Mercury / Mariner 105 - 300 Hp OEM# 25-11379 – 526-21
• Gasket Divider Plate Mercury / Mariner 135 - 200 Hp OEM# 27-904841 – 521-30
• Gasket Choke Plate Mercury / Mariner 135 - 200 Hp 76-91 OEM# 27-672741 – 516-23

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