Yamaha Tube, Water - Cooling System Component - 67F-44361-10-00

Overview

This is one of those parts that quietly keeps your Yamaha from overheating without you ever thinking about it. The water tube carries cooling water from the lower unit up into the engine, and if it’s off even slightly, you’ll start seeing issues. I’ve run into engines overheating just because this tube was misaligned or starting to corrode. When it’s in good shape and seated right, water flow stays consistent and everything runs like it should.

Key Features

• Direct Water Transfer – Moves cooling water from the lower unit to the engine efficiently.
• Genuine Yamaha Fitment – Designed to match factory routing and connection points precisely.
• Supports Engine Cooling – Helps maintain steady water flow for proper temperature control.
• Alignment Stability – Ensures correct positioning within the cooling system.
• Durable Marine Construction – Built to handle water exposure, vibration, and heat cycles.

Engine & Boat Compatibility

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

FAQ

Q: What happens if the water tube is damaged or misaligned?
A: It can restrict water flow and lead to overheating or poor cooling performance.

Q: Can this affect water pressure from the telltale?
A: Yes, improper flow or blockage can reduce visible water output.

Q: Is this part replaced during water pump service?
A: It’s usually inspected and replaced if there’s wear, corrosion, or alignment issues.

Q: Is installation difficult?
A: It requires careful alignment during reassembly but is manageable with experience.

Q: Does saltwater use affect this part?
A: Over time, corrosion and buildup can impact performance if not maintained.