Tecnoseal X8AL Shaft Anode - Aluminum - 1-3/4" Shaft Diameter

The Tecnoseal X8AL Shaft Anode is a critical cathodic protection component designed for marine and freshwater propulsion systems where corrosion control is essential. Built specifically for shafts with a 1-3/4" diameter, this aluminum anode sacrifices itself electrochemically to prevent rust and galvanic corrosion on your vessel's drive shaft, strut, and associated hardware. Marine operators, boat owners, and service technicians rely on shaft anodes to extend the operational life of expensive drivetrain components and avoid costly downtime.

Constructed from high-purity aluminum alloy, the Tecnoseal X8AL features a 3.20" outer diameter and 3.06" height, with a precision-drilled 1.75" inner bore and four mounting holes for secure fastening to your shaft. The aluminum composition is optimized to corrode preferentially—before steel, bronze, or stainless fasteners—creating a galvanic barrier that protects the underlying metal from saltwater and brackish environments. At 1.1 lbs, this anode is sized to provide adequate sacrificial mass for typical single-propeller installations while remaining light enough for easy installation and removal during routine maintenance or replacement cycles.

This anode is ideal for inboard engines, jet drives, and outboard installations where shaft corrosion poses a significant maintenance risk. Tecnoseal's X8AL design is compatible with standard shaft diameters and marine coupling assemblies found on recreational and commercial vessels operating in salt, brackish, and freshwater conditions. For best results, inspect the anode annually and replace when it has consumed approximately 50% of its mass; a corroded anode signals that it is actively protecting your shaft and should be renewed to maintain continuous protection.