COMPLETE ENGINE ANODE YANMAR 119574-44150

Function and technical context

Sacrificial anodes are the central element of cathodic protection in marine engines, acting as an electrochemical barrier against galvanic corrosion that affects the metallic components of the engine unit submerged or in contact with salt or brackish water. This complete anode for Yanmar engines with reference 119574-44150 is installed directly on the engine block, protecting the most vulnerable areas of the internal cooling circuit - liners, cylinder head and water passages - from oxidizing preferably instead of the structural metals of the engine. The absence or advanced deterioration of this component exposes the engine to accelerated corrosion that can lead to pitting in the block, clogging of cooling ducts and, in severe cases, irreparable damage to the internal cast or aluminum parts.

When to replace this part?

The clearest sign that the anode needs to be replaced is the loss of more than 50% of its mass: when the anode appears clearly reduced, fragmented or with a very irregular surface after visual inspection, it has ceased to offer effective protection. The complete engine anodes must be checked at least once per nautical season and replaced whenever the level of wear exceeds half of its volume, regardless of the number of hours sailed, since its consumption depends directly on the water conditions and the galvanic activity of the environment. Replacing the anode preventively at each stranding or annual tune-up is the most recommended practice to avoid costly repairs to the engine block or cooling circuit.

Equivalent manufacturer part numbers