Tecnoseal X14 Shaft Anode - Zinc - 3-1/4" Shaft Diameter

The Tecnoseal X14 Shaft Anode in zinc is a marine-grade cathodic protection system engineered to safeguard boat shafts, struts, and through-hull metallic components from galvanic corrosion. Designed for 3-1/4" shaft diameters, this anode is essential for any vessel operator seeking to extend the service life of critical propulsion and steering hardware. Zinc anodes work by sacrificially corroding in place of more valuable steel and bronze components, making them a cost-effective preventive maintenance solution for saltwater and brackish environments.

This shaft anode features a precisely machined zinc construction with a 5.118" outer diameter and 3.25" inner bore, allowing secure installation on standard shaft sizes without requiring modification. The four-hole mounting pattern (4 holes) ensures balanced, vibration-free attachment and reliable electrical contact to the shaft. Standing 3.75" in height and weighing 9.1 lbs, the X14 delivers substantial galvanic protection while maintaining hydrodynamic efficiency. Tecnoseal's zinc formulation is optimized for seawater applications, offering predictable corrosion rates and consistent performance across varying water temperatures and salinity levels.

This anode is ideal for cruising sailboats, power vessels, and commercial fishing operations where shaft protection is critical to vessel longevity. Installation requires simple bolting to the shaft through the four mounting holes—no special tools or marine contractor expertise needed. Routine inspection and replacement every 2–4 years (depending on water conditions and vessel usage) will maintain optimal corrosion protection. Compatible with standard marine shaft sizes, the Tecnoseal X14 integrates seamlessly into existing through-hull systems and pairs reliably with bonding systems on fiberglass, wood, and steel hulls.