Yamaha - Water Pump Housing - Cooling System Component - 6J8-44311-00-00

Overview

The Yamaha Water Pump Housing | 6J8-44311-00-00 is one of those parts that keeps your cooling system working right without much attention—until it wears out. When the housing gets scored or warped, you’ll start seeing weak water flow or overheating issues pretty quickly. It holds the impeller in place and directs water through the engine, so everything depends on it staying in good shape. If you’re rebuilding the pump, this is one of those parts you don’t want to overlook.

Key Features

• Controlled Water Flow Channeling – Directs cooling water through the engine to maintain proper operating temperature.

• OEM Fit Precision – Built to Yamaha specifications for proper alignment and secure installation.

• Impeller Support Structure – Holds the impeller correctly for efficient and consistent water movement.

• Corrosion-Resistant Construction – Designed to handle harsh marine environments and long-term use.

Engine & Boat Compatibility

• 25 Present
• 30 Present
• 40 Present
• 50 Present
• P50 1994 and Older

FAQs

Q1: What are signs the water pump housing is worn out?
A: Weak water flow, overheating, or visible scoring inside the housing are common signs.

Q2: Can a damaged housing affect the impeller?
A: Yes, it can cause uneven wear and reduce the impeller’s ability to move water properly.

Q3: Should this be replaced during water pump service?
A: If there’s any wear or damage, it’s a smart move to replace it along with the impeller.

Q4: Is installation difficult?
A: It’s straightforward if you’re already servicing the lower unit, just ensure proper alignment.

Q5: Does saltwater use shorten its lifespan?
A: Yes, corrosion and debris can wear it down over time, so regular inspection helps.

• Engine Application
  • 25 - Present
  • 30 - Present
  • 40 - Present
  • 50 - Present
  • P50 - 1994 and Older