Description

The 64157 is a 3-3/4″ zinc rudder anode designed to protect rudders and associated underwater hardware from galvanic corrosion. This two-piece (clam-shell) style anode clamps securely around the rudder blade or mounting area, providing consistent protection in harsh marine environments.

Manufactured from marine-grade zinc, it is the preferred choice for saltwater applications, helping prevent corrosion damage to rudders, shafts, and nearby metal components.

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Key Features

• 3-3/4″ rudder anode size
• Two-piece clamp-on (donut/oval) design
• Marine-grade zinc construction
• Protects rudder and surrounding hardware
• Secure mounting with stainless hardware
• Ideal for saltwater use

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Application / Compatibility

Designed for:

• Rudder protection on inboard vessels
• Sailboats and shaft-driven boats
• Boats with exposed rudder hardware

Common on:

• Inboard cruisers
• Sailboats
• Commercial vessels

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Serial Number / Fitment Notice

Always confirm:

• Rudder thickness and profile
• Anode diameter (3-3/4″)
• Clearance for installation

Proper fitment ensures secure clamping and effective corrosion protection.

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When This Part Needs Replacement

• Anode is 50% or more consumed
• Loose fit or movement
• Uneven corrosion or pitting
• Routine haul-out inspection

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Installation Notes

• Install on clean rudder surface
• Tighten evenly across both halves
• Ensure firm contact for proper bonding
• Do not paint the anode
• Recheck tightness after initial use

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Alternate / Cross-Reference Part Numbers

• Part #: 64157
• Aluminum equivalent available for brackish water
• Magnesium version available for freshwater

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Parts Desk Insight

Rudder anodes are often overlooked but critical—especially on boats that sit in the water full-time. If your shaft anodes are wearing quickly, adding or upgrading rudder protection can help balance the system.

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Shipping

Shipping: Ships same or next day for fast Canada wide shipping.