Tecnoseal X7 Shaft Anode - Zinc - 1-1/2" Shaft Diameter

The Tecnoseal X7 Shaft Anode in zinc is a proven corrosion-control component designed to protect metal shafts and underwater metallic structures from galvanic corrosion. Engineered for marine and freshwater applications, this shaft anode sacrifices itself electrochemically to shield more valuable shaft materials—such as stainless steel or aluminum—from rust and deterioration. Owners of boats, outboard motors, and water-cooled engine systems rely on zinc shaft anodes to extend equipment lifespan and reduce costly maintenance downtime.

This X7 model accommodates a 1-1/2" (1.50") shaft diameter with an outer diameter of 2.58" and a height of 2.62", making it compatible with standard marine propulsion shafts and through-hull penetrations. The zinc construction is highly reactive in saltwater and brackish environments, ensuring rapid and consistent electrochemical protection compared to other anode metals. The integrated four-hole design allows secure fastening and precise alignment on the shaft, while the compact 1.4 lbs weight minimizes hydrodynamic drag and installation burden. Zinc anodes are cost-effective and widely preferred for their reliability across temperature ranges and varied water conditions.

This anode is ideal for recreational boaters, commercial marine operators, and anyone maintaining inboard or outboard propulsion systems in saltwater, brackish, or freshwater environments. It is particularly suited for installations where shaft-to-hull potential differences create corrosion risk. Routine inspection and replacement every 2–3 years (depending on water chemistry and usage) ensures continuous protection. For proper installation, the anode should be slipped onto the shaft, aligned with the four mounting holes, and fastened securely to maintain electrical contact and prevent galvanic corrosion of underlying materials.