Marine-grade aftermarket internal cylinder / engine block sacrificial anode for selected Yamaha 20 HP and 25 HP 4-stroke outboards.

Suitable for selected F20D, F25D and FT25F engines using Yamaha part number 6BL-11325-00.

Installed internally to help protect the engine block and cooling water passages against galvanic corrosion.

Available in Zinc or Aluminium.

Choose Your Anode Material

Traditional sacrificial anode material, particularly suitable for saltwater use.

Marine-grade sacrificial anode suitable for saltwater and brackish water applications.

Fitment

Please check the exact model and serial number, as Yamaha uses several different internal anodes on 20 HP and 25 HP engines.

OEM part numbers are used for identification purposes only.

1 × Internal Block Anode

Material supplied according to selected variant:

This anode does not fit every Yamaha 20 HP or 25 HP outboard.

Yamaha uses different internal anodes depending on the exact model and production year.

Before ordering, please check:

If the part looks the same as yours, this does not always mean it is the correct part for your outboard.

If unsure, send us your engine model and serial number and we can help confirm compatibility.

Please confirm compatibility with your exact engine model, year and serial number before purchase.