Martyr Anodes Zinc Clamp Shaft Anode

The Martyr Anodes Zinc Clamp Shaft Anode is a sacrificial zinc shaft anode (also called a shaft zinc or clamp-on shaft anode). It protects submerged metal parts on your boat, such as propeller shafts, from galvanic corrosion. When dissimilar metals sit in seawater, the zinc corrodes first, so the shaft and other underwater metals last longer.

Key Features:

• Internal steel clamp insert: holds the anode tight against the shaft and keeps full contact for the life of the anode.
• Stainless steel hardware: includes lock washers.
• Bolt retaining washers: keep the bolts from falling out, so you can install the anode underwater.
• Slotted head hardware: comes with a lock washer and a bolt retaining washer.
• High-purity zinc: Martyr describes its zinc as 99.995% pure and made to U.S. Military Specifications.
• Zinc for salt water: Martyr recommends zinc for salt-water use. Aluminum suits salt and brackish water, and magnesium suits fresh water.

Martyr Anodes is a well-known marine corrosion protection brand. This clamp-style shaft anode gives you a secure, simple way to protect your drivetrain.