Yamaha - Water Tube - Cooling System Component - 6S1-44361-12-00

Overview

Cooling issues don’t take long to show up when something in the water path isn’t right. I’ve worked on motors where a small restriction in a tube caused temps to creep up faster than expected. When this piece is clean and flowing properly, the engine stays cool and runs like it should all day. It’s a simple part, but it’s one you rely on every time you’re out on the water.

Key Features

• Direct Cooling Flow Path – Channels water efficiently through the engine to regulate temperature.
• OEM Fit and Alignment – Matches factory routing for proper installation and flow direction.
• Corrosion-Resistant Build – Designed to handle constant exposure to fresh and saltwater environments.
• Supports Stable Engine Temps – Helps prevent overheating during extended operation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines with internal water cooling systems. Commonly used across a range of Yamaha outboards where consistent water circulation is critical for engine temperature control.

FAQ

Q: What are signs this water tube needs replacing?
A: Overheating, reduced water output, or visible corrosion are common signs.

Q: Can a restricted tube affect performance?
A: Yes, poor cooling can cause the engine to lose efficiency or go into protection mode.

Q: How does saltwater impact this part?
A: Salt buildup and corrosion can reduce flow over time if not flushed regularly.

Q: Should I check other cooling components during replacement?
A: Yes, it’s smart to inspect the water pump and passages for proper flow.

Q: Any installation tips?
A: Make sure it’s properly seated and aligned to avoid leaks or restricted water flow.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

• Supersessions
  69J-44361-10-00, 6S1-44361-11-00