Customers use this 40mm Martyr Shaft Anode over other brands because of the unique design features. A Martyr Shaft Anode features additional magnesium material around the fasteners extending the usable life of the anodes. Don't sacrifice your boat, just your Martyr Shaft Anode! This metric shaft anode features 2 screws ensuring a secure fit. Each screw has a red plastic retaining washer to make sure it will not fall out during installation. The interlocking halves fit snug, forming great metal to metal contact for the best protection. 

Anode Dimensions:
Height - 78mm (3")
OD - 69mm (2.74")
ID - 40mm (1.58")

Slotted Hardware Included

Martyr Part Number CMX40M