8M0116589 Transom and Gearcase Aluminum Anode Kit - Mercury, 350HP

8M0116589 Transom and Gearcase Aluminum Anode Kit - Mercury, 350HP

Aluminum anode kit 8M0116589 is for use on Mercury Verado 350hp L6 outboards (serial No. 1B7 16557 and above). The kit includes all anodes and attaching hardware for the transom bracket and gearcase of the engine. These aluminum anodes are for fresh water or salt water use. The anodes are important in the prevention of corrosion of aluminum or stainless steel engine parts. Inspect anodes periodically for best protection and replace when seeing signs of corrosion or pitting. Never paint an anode. See your owner's manual or service manual for specific applications and replacement instructions.
For select Mercury Verado 350 hp L6 Verado outboards.
This aluminum anode kit is for fresh or saltwater use.
Kit includes anodes and hardware to replace all anodes on the transom bracket and gearcase.

The anodes serve to help prevent corrosion of aluminum or stainless steel engine parts.
Easy to install with hardware included with the anode and common tools.

Fits: L6 Verado 350HP (5.44 Torpedo Gearcase)

Additional Information

Fit the correct anode material for the waters in which your vessel operates

As a general rule, owners should fit anodes appropriate for the environment in which they most frequently berth, and the infomation below serves as a useful guide:

• Saltwater vessels should use Traditional (Zinc) Anodes
• Brackish water Vessels should use Premium (Aluminum) Anodes
• Fresh water vessels should use Fresh (Magnesium) Anodes

Some boats will alternate between salt and fresh water. Others are docked in marinas or behind tidal barriers. The water there is contained and likely to be brackish or nearly fresh. To avoid corrosion, boat owners must be aware of the consequences this may have on their vessels.  Boat owners can then install the proper cathodic protection system.

Not all anodes are appropriate for every application. For example, after a period of time in fresh water, the surface of a zinc or aluminum anode will become covered with an off-white crust of oxide, essentially sealing the anode and preventing it from functioning even when restored to saltwater. Zinc anodes have a similar difficulty even in brackish circumstances, however aluminum will continue to perform well in river estuaries and other brackish water areas indefinitely. Because the anode is passive, the next most anodic component in the anode bonding system will begin to sacrifice itself, which might be disastrous.

As a result, it is critical to inspect zinc and aluminum anodes after any trips into fresh water. If necessary, clean or replace the anodes. Martyr recommends that if a vessel is in fresh water for more than two weeks, an alternative anode system suitable for fresh water situations be used.

Magnesium anodes have a much higher driving voltage than zinc or aluminum, making them ideal for use in fresh water. Magnesium anodes will become very active in salt water, where they will likely last only a few months. Protected surfaces can accumulate an off-white calcareous deposit that is difficult to remove.

Magnesium anodes are not intended for prolonged use in salt water, and if you plan to leave your boat in salt water for more than seven days (fourteen days in any given year), you should consider replacing the anodes.