Yamaha - Internal Crankcase Anode Kit - F350 UCB, XCB, NCB Corrosion Protection

Overview

On the F350, internal anodes are doing quiet work every time the engine is in the water. They’re there to absorb corrosion before it reaches the internal metal surfaces you really don’t want damaged. On larger offshore motors like this, staying ahead of internal corrosion matters, especially if the boat lives in saltwater. Replacing the anodes and grommets as a set is simple preventative maintenance that helps protect the engine and keep it in good shape for the long haul.

Key Features

• Internal Corrosion Protection – Sacrificial anodes help shield internal engine components from electrolysis and corrosion.

• Complete Kit with Grommets – Includes matching grommets for proper fit, sealing, and secure installation.

• Built for F350 Models – Designed for Yamaha F350 UCB, XCB, and NCB applications.

• Preventative Maintenance Essential – Helps extend engine life by protecting critical internal surfaces over time.

Engine & Boat Compatibility

• F350 UCB

FAQ

Q: How often should I replace these internal anodes?
A: It depends on use, but many boaters inspect them every season and replace them when they show heavy corrosion.

Q: Why should I replace the grommets too?
A: Fresh grommets help ensure the anodes seat properly and seal the way they should.

Q: What happens if these anodes are worn out?
A: Once they’re spent, corrosion can start attacking internal engine components instead.

Q: Is this more important in saltwater?
A: Yes, saltwater usually eats through anodes faster, so regular inspection matters even more.

Q: Is this something I can do myself?
A: In many cases yes, as long as you have access and follow the correct service procedure for the engine.

• Engine Application
  • F350