Yamaha - Internal Crankcase Anode Kit - F90, F115 Corrosion Protection

Overview

On the F90 and F115 models, internal anodes are doing quiet work every time the engine is in the water. They’re there to absorb corrosion before it reaches critical internal components. If you’re running in saltwater, they wear down faster than most people expect, and once they’re gone, the engine becomes the next target. Replacing them along with the grommets is simple maintenance that helps keep your motor protected and running strong over time.

Key Features

• Internal Corrosion Protection – Sacrificial anodes help prevent electrolysis from damaging internal engine components.

• Complete Kit with Grommets – Includes both anodes and matching grommets for proper installation and sealing.

• Designed for Multiple Configurations – Built for Yamaha F90 and F115 XA, LA, and JA models.

• Preventative Maintenance Essential – Helps extend engine life by protecting internal metal surfaces.

Engine & Boat Compatibility

• F90
• F115

FAQ

Q: How often should I replace these internal anodes?
A: Typically once per season, or more often if the engine is used in saltwater regularly.

Q: What happens if I don’t replace them?
A: Corrosion can begin attacking internal engine components once the anodes are worn out.

Q: Are the grommets important to replace too?
A: Yes, they ensure proper sealing and secure installation of the anodes.

Q: How do I know if the anodes are worn?
A: If they’re heavily corroded or significantly reduced in size, it’s time to replace them.

Q: Is this a difficult job?
A: It’s usually straightforward with basic tools, depending on engine access.

• Engine Application
  • F90 XA
  • F115 XA