Mercury Outboard Anodes

When a Mercury outboard anode is missing, or almost wasted away, whatever metal component, or components, it was installed to protect will surely dissolve sooner than later. PartsVu offers a wide assortment of Mercury outboard anodes and Mercruiser outboard anodes and anode kits to protect your Mercury or Mercruiser engine and help you to maintain optimal performance for years to come.

A boat outboard anode purpose is to protect areas of the boat from corrosion. Galvanic corrosion occurs when two dissimilar metals are immersed in a conductive solution and are electrically connected. We recommend replacing anodes when they are half eroded or dissolved, which is typically once a year. Outboard Anodes are typically made of zinc, which is an extremely effective base metal far less resistant to galvanic and electrolytic corrosion than most other metals. The Outboard Anodes act as sacrificial metal because they give off their electrons and corrode before the other metals in the motor can be affected. Boat Outboard Anodes (also referred to as boat zincs) protect the metal parts of your boat from galvanic corrosion, which occurs when any two dissimilar metals are physically or electrically connected and immersed in water (such as the shaft, rudder, outboard, stern drive or propeller).

Boat Outboard Anodes are an essential part of the boat maintenance cycle as they protect underwater metals from galvanic corrosion. Also known as sacrificial Outboard Anodes, boat Outboard Anodes generally come in three metals - aluminium, magnesium and zinc. Essentially, fresh water is a much less conductive environment than salt water, therefore magnesium anodes are your best choice as they are much more active (less noble) than zinc or aluminum anodes.

The result is increased efficiency thus superior protection for your underwater metal components. Sacrificial anodes are used to protect metal structures from corroding. Sacrificial anodes work by oxidizing more quickly than the metal it is protecting, being consumed completely before the other metal reacts with the electrolytes. Since fresh water is much less conductive than salt water, magnesium Outboard Anodes are the best choice because they're more active (less noble) than zinc or aluminum so they will protect your outboard engine parts more effectively. Since your boat will often be on the water, having a zinc anode is necessary to keep your boat's engine and propeller lasting a long time. The aluminum Outboard Anodes would last between 130 and 150 days. The outer body of the ship (mainly hull) is continuously in contact with water, making it extremely vulnerable to corrosion.

It is for this reason sacrificial anodes are used to protect the parent material. Your boat will typically have at least two metals built within it, but zinc is a third metal added for it to be intentionally sacrificed. Your engine's sacrificial Outboard Anodes (or zincs, as they are often called) are designed to protect the motor's other submerged metals from galvanic corrosion. Zincs should be replaced when about half of the Outboard Anodes has been lost to corrosion. Ideally we want that to occur not more frequently than annually. The longevity of a sacrificial zinc Outboard Anodes is a function of its weight. When a zinc lasts less than a year, you need one with more weight.