6D8-WS443-00 Yamaha Housing Water Pump | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Lower Water Pump Housing Set - Part Number: 6D8-WS443-00

A genuine Yamaha lower water-pump base and seal-housing set for selected 60HP to 100HP outboards.

The assembly fits beneath the impeller and wear plate, supporting the driveshaft seals while forming the lower portion of the water-pump chamber.

⚙️ Key Features

• Genuine Yamaha OEM lower water-pump housing set
• Correct Yamaha part number 6D8-WS443-00
• Includes the lower pump base and installed sealing components
• Used on selected two-stroke and four-stroke gearcases

🚤 Compatibility

Commonly used on

• Yamaha mid-range two-stroke and four-stroke lower-unit water pumps

Typically suits

• Engine models:
• Yamaha 60F two-stroke - approximately 2004-2018
• Yamaha E60H two-stroke
• Yamaha 70B two-stroke - approximately 2004-2018
• Yamaha 75A and 75C two-stroke
• Yamaha 80A two-stroke - approximately 1985-1996
• Yamaha 85A two-stroke - approximately 1995-1997
• Yamaha 90A two-stroke - approximately 1985-2018
• Yamaha F80A and F80B four-stroke - approximately 2001-2009
• Yamaha F100A, F100C and F100D four-stroke - approximately 2000-2009
• HP Range: 60HP - 100HP
• Engine Type: Yamaha two-stroke and four-stroke outboard
• Year Range: Approximately 1985 - 2018, dependent on gearcase design

🔌 Function

The housing forms the lower water-pump base and supports the driveshaft oil seals. It separates the cooling-water pump chamber from the lubricated gearcase.

⚠️ Common Signs of Failure

• Gear oil appears beneath the water-pump base
• Lower-unit lubricant becomes milky
• Engine overheats because the pump base is distorted
• Seal bore is corroded or damaged
• Gearcase fails pressure or vacuum testing

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 6D8-WS443-00 → Supersedes 6D8-44341-00-94
• 6D8-44341-00-94 → Supersedes / replaces 688-44341-01-94
• 688-44341-01-94 → Related to 688-44341-00-94
• 688-44341-00-94 earlier Yamaha lower pump-housing reference

OEM / Related Numbers

• 6D8-WS443-00
• 6D8-WS443-00-00
• 6D8WS4430000
• 6D8-44341-00-94
• 6D8-44341-01
• 688-44341-01-94
• 688-44341-00-94
• 688-44341-01 related lower pump base

Aftermarket / Verified Equivalents

• Recmar: REC688-44341-01
• Direct replacement: 6D8-44341 / 688-44341 lower housing set
• Aftermarket housing and seal set: 6D8-WS443-00

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging