Tecnoseal X5MG Shaft Anode - Magnesium - 1-1/4" Shaft Diameter

The Tecnoseal X5MG Shaft Anode in magnesium is a corrosion-fighting component designed to protect boat shafts and metal fittings from galvanic corrosion in saltwater and brackish environments. Built for marine propulsion systems, this shaft anode sacrifices itself electrochemically to shield more valuable steel and bronze components from rust and deterioration. Whether you operate a commercial fishing vessel, recreational powerboat, or any watercraft with through-shaft propulsion, a properly sized shaft anode is essential maintenance that extends equipment life and prevents costly failures.

Magnesium anodes offer superior driving voltage compared to zinc alternatives, making them ideal for fresh water and low-conductivity environments where zinc performance diminishes. The Tecnoseal X5MG features a 1-1/4" inner diameter sized to fit standard shaft diameters, with an outer diameter of 2.27" and height of 2.52" for balanced current distribution and extended service life. The two mounting holes enable secure fastening to your shaft assembly, while the compact 0.28 lb magnesium construction ensures minimal hydrodynamic drag. As the anode corrodes preferentially, it continuously regenerates protection—a passive, maintenance-free safeguard against pitting and structural compromise.

Marine technicians and boat owners rely on shaft anodes to prevent expensive shaft replacement and bearing damage caused by corrosion. Installation is straightforward: slide the anode over the shaft, align the mounting holes, and secure with fasteners—no special tools required. The X5MG is compatible with any propulsion shaft measuring 1-1/4" in diameter and works effectively in saltwater, brackish, and low-conductivity freshwater applications. For optimal protection, inspect and replace your shaft anode annually or when it shows 50% consumption, ensuring your drivetrain stays corrosion-free season after season.