Water Pump Service Kit - Mariner / Yamaha 55 / 60 HP (1980-1991) OEM# 18-3425 | WSM 725-417

Water Pump Service Kit Mariner / Yamaha 55 / 60 Hp OEM# 18-3425

This WSM water pump service kit is a quality aftermarket replacement part designed for Mariner 2 Cyl 3.228 Bore 55 and 2 other compatible models.

It replaces selected OEM reference numbers including 18-3425, 663-W0078-00-00, 663-W0078-A0-00, 84188M, 84188T 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 13 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 725-417
• Product: Water Pump Service Kit
• OEM Reference: 18-3425, 663-W0078-00-00, 663-W0078-A0-00, 84188M, 84188T
• Application: Mariner 2 Cyl 3.228 Bore 55 and 2 other compatible models

Product Fitment

This part is suitable for the following models:

• Mariner 2 Cyl 3.228 Bore 55 – 1984
• Mariner 2 Cyl 3.228 Bore 55 – 1985
• Mariner 2 Cyl 3.228 Bore 55 – 1986
• Mariner 2 Cyl 3.228 Bore 55 – 1987
• Mariner 2 Cyl 3.228 Bore 55 – 1988
• Mariner 2 Cyl 3.228 Bore 55 – 1989
• Mariner 2 Cyl 3.228 Bore 60 – 1980
• Mariner 2 Cyl 3.228 Bore 60 – 1981
• Mariner 2 Cyl 3.228 Bore 60 – 1982
• Mariner 2 Cyl 3.228 Bore 60 – 1983
• Yamaha 2 Cyl 3.228 Bore 55 – 1989
• Yamaha 2 Cyl 3.228 Bore 55 – 1990
• Yamaha 2 Cyl 3.228 Bore 55 – 1991

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:

• Connecting Rod Mariner / Yamaha 48 - 90 Hp OEM# 629-6830M – 800-300
• Rectifier Mercury / Mariner / Yamaha 8 - 70 Hp OEM# 664-81970-60-00 – 365-1930
• Gasket Fuel Pump Mariner / Yamaha 25 - 300 Hp 85-15 OEM# 27-80757M – 541-26
• Crankcase Check Valve Mariner / Yamaha 4 - 300 Hp OEM# 21-80727M – 601-300

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