Yamaha - Cartridge Insert - Cooling System Component - 6R3-44322-42-00

Overview

This is one of those parts that keeps water moving where it needs to go, even though you never really see it working. I’ve come across cooling issues that ended up being tied back to worn or clogged inserts like this. When it’s in good shape, water flows clean and the engine stays at the right temp without any surprises. It’s a small piece, but it plays a big role in keeping things running right.

Key Features

• Directed Water Flow Control – Helps guide cooling water through the system efficiently.
• OEM Fit and Integration – Designed to match factory components for proper seating and performance.
• Corrosion-Resistant Construction – Built to handle constant exposure to water in marine environments.
• Supports Cooling System Efficiency – Helps maintain stable engine temperatures during operation.

Engine & Boat Compatibility

Designed for Yamaha outboard engines utilizing internal water cooling systems. Commonly used across a range of Yamaha outboards where proper water flow management is critical for temperature control.

FAQ

Q: What are signs this insert needs replacing?
A: Overheating issues, reduced water flow, or visible buildup and wear.

Q: Can this affect overall engine cooling?
A: Yes, restricted or misdirected flow can lead to higher engine temperatures.

Q: How does saltwater impact this part?
A: Salt buildup and corrosion can affect performance 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 free of debris before reassembly.

• Supersessions
  6R3-44322-41-00