Tecnoseal X1MG Shaft Anode - Magnesium - 3/4" Shaft Diameter

The Tecnoseal X1MG Shaft Anode is a magnesium sacrificial protection component engineered for marine propulsion systems and saltwater applications. Designed to fit 3/4" shaft diameters, this anode prevents galvanic corrosion on metal shafts immersed in conductive saltwater environments. Shaft anodes are essential for boat owners, marine engineers, and anyone operating equipment with exposed metal shafts in marine settings, as they corrode preferentially to the primary shaft material, extending its service life significantly.

Magnesium is the most active sacrificial material available for marine anode applications, making it ideal for saltwater environments where galvanic corrosion rates are highest. The X1MG anode measures 2.14" in outer diameter with a 2.02" height, providing substantial surface area for electrochemical protection. Two mounting holes ensure secure installation on shaft brackets or bearing housings, and the 0.75" inner diameter accommodates standard shaft sizes precisely. At only 0.26 lbs, the compact magnesium construction delivers reliable protection without adding significant weight to rotating assemblies.

This shaft anode is ideal for inboard/outboard motors, trolling motor shafts, through-hull fittings, and any marine propulsion system operating in saltwater or brackish water. Installation requires mounting the anode directly onto the shaft with the two-hole pattern, ensuring full electrical contact. Regular inspection is recommended, as magnesium anodes deplete over time and require periodic replacement depending on water salinity and equipment usage. The Tecnoseal X1MG delivers dependable cathodic protection, helping prevent costly shaft replacement and corrosion damage in demanding marine conditions.