Yamaha - Zinc Cylinder Head Anode - Corrosion Protection Component - 6AW-11325-00-00

Big Yamaha offshore motors spend their lives in harsh environments, and corrosion protection is a big part of keeping them running for the long haul. The Yamaha 6AW-11325-00-00 Zinc Cylinder Head Anode is designed to sacrifice itself so more critical engine components do not corrode. Inside the cooling passages, it quietly protects the aluminum parts that are constantly exposed to water.

It is one of those maintenance parts experienced Yamaha techs check regularly, especially on boats that live in saltwater. When the zinc starts to wear down, it means it is doing its job. Replacing it during routine service helps keep the cooling system protected and prevents corrosion from working its way into the engine.

Key Features

• Internal Corrosion Protection – Protects aluminum cooling passages by sacrificing itself to electrolysis.
• Genuine Yamaha Fitment – Manufactured to Yamaha specifications for correct installation and performance.
• Marine Grade Zinc Material – Built from zinc designed specifically for corrosion protection in marine environments.
• Routine Maintenance Item – Commonly inspected and replaced during cooling system service.

Engine & Boat Compatibility

F300 - 2007-2009
F350 - 2007-2011
FL350 - 2010
LF300 - 2007-2009
LF350 - 2007-2011

Frequently Asked Questions

Q: How do I know when the anode needs to be replaced?
A: If the zinc is heavily worn, pitted, or reduced in size, it should be replaced to maintain proper corrosion protection.

Q: Why do Yamaha engines use internal zinc anodes?
A: Internal anodes protect aluminum engine parts inside the cooling system from corrosion caused by electrolysis.

Q: Do saltwater engines need these replaced more often?
A: Yes. Engines used in saltwater typically see faster anode wear and should be checked regularly.

Q: Can I run the engine without replacing a worn anode?
A: It is not recommended because once the zinc is gone, corrosion can start affecting engine components.

Q: Is installation complicated?
A: Installation is generally straightforward, but the anode should always be installed cleanly and tightened correctly.

• Engine Application
  • F300 - 2007-2009
  • F350 - 2007-2011
  • FL350 - 2010
  • LF300 - 2007-2009
  • LF350 - 2007-2011