Washer Poppet Valve - Mercury 40-200 HP (1989-2006) OEM# 12-76451 | WSM 785-100-05

Washer Poppet Valve: Mercury 40 - 200 Hp OEM# 12-76451

This WSM washer poppet valve is a quality aftermarket replacement part designed for Mercury 6 Cyl 3.501 Bore 2.5L EFI 200.

It replaces selected OEM reference numbers including 12-76451, 64879, 76451 and is suitable for service, repair and rebuild work.

Key Features

• Quality aftermarket replacement part from WSM
• Engineered for dependable fit, function and service life
• Designed for marine and powersports repair and maintenance
• Compatible with 18 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 785-100-05
• Product: Washer Poppet Valve
• OEM Reference: 12-76451, 64879, 76451
• Application: Mercury 6 Cyl 3.501 Bore 2.5L EFI 200

Product Fitment

This part is suitable for the following models:

• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1989
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1990
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1991
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1992
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1993
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1994
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1995
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1996
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1997
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1998
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 1999
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2000
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2001
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2002
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2003
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2004
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2005
• Mercury 6 Cyl 3.501 Bore 2.5L EFI 200 – 2006

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:

• Water Pump Service Kit Mercury / Mariner / Mercruiser 65 - 300 Hp OEM# 12290 – 725-157
• Thermostat Mercury 7.5 - 250 Hp 72-06 OEM# 62981 – 775-25
• Thermostat Kit Mercury 2.0 - 3.0 Liter V6 OEM# 75692Q2 – 775-25-2K
• Spring Poppet Valve Mercury OEM# 24-64878 – 785-100-03

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