Yamaha - Insert Cartridge - Cooling System Component - 670-44322-01-00

Overview

This is one of those cooling system pieces that quietly does its job until something’s off. The insert cartridge helps guide water through the system, and when it starts wearing down or getting clogged, you’ll usually see it in higher temps or weak water flow. I’ve run into plenty of cases where swapping this out brought the cooling system right back to normal. It’s a simple part, but it plays a big role in keeping your engine protected.

Key Features

• Directed Water Flow – Helps control and guide cooling water through the system efficiently.
• Heat-Resistant Design – Built to handle continuous exposure to engine heat and pressure.
• Durable Construction – Holds up against debris, wear, and long-term marine use.
• Precision Fitment – Matches Yamaha specifications for proper alignment and installation.
• Cooling System Support – Helps maintain stable engine temperatures during operation.

Engine & Boat Compatibility

• Designed for Yamaha outboard engines with cartridge-style cooling systems
• Compatible with a range of small to mid-range horsepower models
• Suitable for both freshwater and saltwater applications
• Commonly used during cooling system service and maintenance

FAQ

Q: What are the signs this insert cartridge needs replacing?
A: Rising engine temperatures, weak water flow, or an inconsistent tell-tale stream are common signs.

Q: Can debris affect this part?
A: Yes, sand, salt, and debris can cause wear or restrict water flow over time.

Q: Should I replace this during routine maintenance?
A: It’s a good idea to inspect it regularly and replace it if there’s any wear or blockage.

Q: Is installation difficult?
A: It’s usually straightforward if you’re already working on the cooling system components.

Q: Does saltwater use require more frequent checks?
A: Yes, saltwater can accelerate buildup and wear, so more frequent inspection is recommended.