OMC engines are built to last. However, OMC is not immune from the reactions that metals have while in water. When metal is exposed to freshwater or saltwater, the metals begin to break down due to electrolysis. This will cause the metals to eventually corrode, making the part useless. When corrosion happens to a boat motor, it can be extremely expensive to repair and can temporarily keep you off the water. There is a solution to preventing corrosion. The solution is by using anodes to protect the metal. Sacrificial anodes break down so the metals on your engine will not. At iboats, you can find anodes for every type of OMC engine part that is susceptible to corrosion at a great price.