Yamaha Gasket, Water Pump - Cooling System Seal - 679-44316-A0-00

Overview

This is one of those small parts that can cause big problems if it’s not right. The water pump gasket seals the housing so water pressure stays where it should, and if it’s worn or damaged, you’ll lose efficiency fast. I’ve seen fresh impellers not perform just because of a bad gasket letting water leak past. When it’s sealed properly, the cooling system holds pressure and does its job.

Key Features

• Water Pump Sealing – Creates a tight seal to maintain proper water pressure.
• Genuine Yamaha Fitment – Designed to match factory pump housing surfaces precisely.
• Supports Cooling Efficiency – Prevents leaks that can reduce water flow performance.
• Reliable Seal Integrity – Helps maintain consistent operation under load.
• Durable Gasket Material – Built to withstand water exposure and heat cycles.

Engine & Boat Compatibility

Compatible with select Yamaha outboards using this water pump gasket. Verify fitment based on your specific engine model.

FAQ

Q: What happens if this gasket fails?
A: Water can leak, reducing pressure and causing poor cooling performance.

Q: Should this be replaced during water pump service?
A: Yes, it’s best practice to replace it anytime the pump is serviced.

Q: Can a bad gasket cause overheating?
A: Yes, loss of pressure can reduce cooling efficiency and lead to higher temps.

Q: Is installation difficult?
A: No, but surfaces need to be clean and aligned properly for a good seal.

Q: Does saltwater use affect this gasket?
A: Over time, exposure can wear it down, especially if not replaced regularly.

• Supersessions
  679-44316-00-00