Yamaha Heat Exchanger Assy - Cooling System Component - 67C-12440-00-00

Overview

On engines that rely on a heat exchanger setup, this is a critical piece for keeping temperatures under control. It transfers heat away from the engine using coolant and raw water, and when it starts to clog or fail, you’ll notice rising temps pretty quickly. I’ve worked on setups where everything else checked out, but the exchanger was the bottleneck. When it’s clean and functioning right, the engine holds steady temps even under load.

Key Features

• Heat Transfer Function – Removes engine heat by transferring it through the cooling system.
• Genuine Yamaha Fitment – Designed to match factory cooling system specifications precisely.
• Supports Stable Engine Temps – Helps maintain consistent operating temperatures under load.
• Efficient Cooling Design – Allows proper flow of coolant and water for optimal performance.
• Durable Marine Construction – Built to handle corrosion, heat, and constant water exposure.

Engine & Boat Compatibility

Compatible with select Yamaha outboards using this heat exchanger assembly. Verify fitment based on your specific engine model.

FAQ

Q: What are signs of a failing heat exchanger?
A: Rising engine temperatures, overheating, or reduced cooling efficiency.

Q: Can this get clogged over time?
A: Yes, debris, salt, and buildup can restrict flow and reduce performance.

Q: Does this part require regular maintenance?
A: It should be inspected and cleaned periodically, especially in saltwater use.

Q: Is this different from a standard cooling system?
A: Yes, it uses a heat exchange process instead of direct raw water cooling.

Q: Is installation difficult?
A: It can require some effort depending on access and hose connections.