Gasket Megaphone - Mercury / Mariner 105-225 HP (1988, 1990, 1992, 1998-1999, 2004, 2006) OEM# 27-78246 | WSM 540-29

Gasket Megaphone Mercury / Mariner 105 - 225 Hp 78-99 OEM# 27-78246

This WSM gasket megaphone 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 27-78246 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: 540-29
• Product: Gasket Megaphone
• OEM Reference: 27-78246
• 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 – 1989-1999
• Mercury 6 Cyl 3.125 Bore 2L XR2 150 – 1978-1998
• Mercury 6 Cyl 3.375 Chrome Bore 2.4L 175 – 1986-1988
• Mercury 6 Cyl 3.375 Chrome Bore 2.4L 200 – 1989-1999
• Mercury 6 Cyl 3.375 Steel Bore 2.4L XR-4 150 – 1989-1990
• Mercury 6 Cyl 3.375 Steel Bore 2.4L XR-4 175 – 1989-1990
• Mercury 6 Cyl 3.501 Bore 2.5L 200 – 1991-1992
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 150 – 1991-1999
• Mercury Mercury – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1989-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Jet 105 – 1989-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Jet 140 – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 135 – 1992-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Optimax 150 – 1998-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Pro Max 150 – 1998-1999
• Mercury 6 Cyl 3.501 Bore 2.5L Pro Max 200 – 1994-1998
• 6 Cyl 3.501 Bore 2.5L Pro Max 225 – 1994-2006
• 6 Cyl 3.501 Bore 2.5L XR6 150 – 1994-2004
• 1992-1998

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 / Mercruiser 90 - 485 Hp OEM# 25-62700 – 526-19
• Propeller Shaft Mercury / Mariner 105 - 225 Hp OEM# 44-94148 – 449-122
• O-Ring End Cap Mercury / Mariner / Mercruiser 70 - 240 Hp OEM# 25-54029 – 526-18
• Gasket Relief Valve Mercury / Mariner 105 - 240 Hp 76-06 OEM# 27-78690 – 540-28

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