CMP Shaft Anode Aluminum

The CMP Shaft Anode in aluminum is a limited clearance shaft collar anode (sacrificial zinc-style anode) that gives boats cathodic protection against galvanic corrosion. It is sold under the Martyr Anodes name by CMP Group. It bolts around a propeller shaft and corrodes in place of your boat's underwater metal parts, so those parts last longer.

Key Features:

• Aluminum alloy construction suits salt and brackish water, and is also used in fresh water.
• Limited clearance, collar-style design fits where space along the shaft is tight.
• Interlocking halves line up easily around the shaft.
• Full shaft contact around the whole circumference of the shaft.
• Extra alloy around the fasteners helps the anode last longer in service.
• Stainless steel hardware with a bolt-retaining washer helps keep the screws from dropping off during installation.
• Pressure die-cast and made to strict quality standards.

These anodes protect pleasure craft shafts and the underwater metals around them. Inspect them regularly and replace them once they have mostly corroded away. Several sizes are available, so you can match the anode to your shaft.