Yamaha – Anode Grommet | Corrosion Protection | 66M-11328-00-00

Overview

The Yamaha 66M-11328-00-00 Anode Grommet is a small but essential component used to properly secure and insulate the engine’s sacrificial anode. This rubber grommet ensures the anode mounts correctly within the engine block while maintaining proper contact points needed for corrosion protection. In marine environments, sacrificial anodes protect internal engine components from galvanic corrosion caused by saltwater and electrolysis. Replacing worn or hardened grommets helps maintain correct anode positioning and ensures the corrosion protection system works effectively.

Key Features

• Anode Mounting Support – Holds the sacrificial anode securely in place inside the engine.

• Maintains Corrosion Protection System – Helps ensure proper electrical contact needed for the anode to function correctly.

• OEM Yamaha Fitment – Manufactured to precise Yamaha specifications for reliable installation.

• Durable Marine-Grade Rubber – Built to withstand heat, moisture, and marine engine conditions.

Engine & Boat Compatibility

• F15 - 1998-2006
• F25 - 1998-2016
• F30 - 2001-2016
• F40 - 2000-2016
• F50 - 1999-2016
• F60 - 2002-2016
• F70 - 2010-2016
• F9.9 - 2005-2006
• LZ150 / LZ200 / LZ250 / LZ300 - 2000-2012
• T25 - 2001-2016
• T50 - 1999-2016
• T60 - 2003-2016
• T9.9 - 2005-2006
• VX200 / VX225 / VX250 - 2004-2005
• VZ150 / VZ175 / VZ200 / VZ225 / VZ250 / VZ300 - 2000-2012
• Z150 / Z175 / Z200 / Z250 / Z300 - 2000-2012

FAQ

Q: What does an anode grommet do in a Yamaha outboard?
A: It secures and positions the sacrificial anode while helping maintain the correct electrical contact for corrosion protection.

Q: Why is the anode important for an outboard engine?
A: The sacrificial anode corrodes first, protecting critical engine components from saltwater corrosion and electrolysis damage.

Q: When should the grommet be replaced?
A: It should be replaced if it becomes cracked, brittle, or deformed during anode service.

Q: Can a worn grommet affect corrosion protection?
A: Yes. Improper mounting can prevent the anode from functioning effectively.

Q: Is this part typically replaced during routine maintenance?
A: It is commonly inspected during anode replacement and replaced if wear is visible.

• Supersessions
  66M-11328-01-00, 66M-11328-01-00