Yamaha - Water Seal Rubber - Cooling System Component - 6L2-44368-00-00

Overview

Seals in the cooling system don’t get much attention, but when one goes bad, you’ll know it fast. Loss of water pressure or inconsistent cooling can come down to something as simple as this rubber seal. I’ve seen perfectly good pump setups underperform just because the seal wasn’t holding. Replacing it is a small step that keeps the whole cooling system working the way it should.

Key Features

• Maintains Cooling System Seal – Helps keep water flow properly contained within the pump system.
• Prevents Water Loss – Reduces leaks that can affect cooling performance and pressure.
• Flexible Rubber Construction – Designed to maintain sealing under constant movement and pressure.
• Factory-Spec Fitment – Matches Yamaha components for proper installation and alignment.
• Essential Pump Component – Commonly replaced during water pump service or rebuild.

Engine & Boat Compatibility

Designed for Yamaha outboard engines with compatible water pump and cooling systems. Commonly used across small to mid-range outboards on skiffs, fishing boats, and utility vessels. Always confirm part number compatibility before installation.

FAQ

Q: What are signs this water seal needs replacing?
A: Weak water flow, leaks, or inconsistent cooling performance are common indicators.

Q: Can a worn seal cause overheating?
A: Yes, if water isn’t contained properly, it can reduce cooling efficiency.

Q: Should I replace this during a water pump service?
A: Yes, it’s a good idea to replace seals anytime you service the pump.

Q: Is installation difficult?
A: It’s straightforward, just make sure it’s seated properly and not damaged during install.

Q: Does saltwater affect this part?
A: Over time, yes—regular inspection helps prevent failure.

• Supersessions
  6L2-44368-01-00, 6L2-44368-01-00