Tecnoseal X7 1-1/2 in Zinc Propeller Shaft Anode

The Tecnoseal X7 zinc shaft anode is built around a 1-1/2 in shaft opening and uses a larger body than the X3 model. It measures 2.58 in across the outside, stands 2.62 in high, and weighs 1.37 lb. Four fastener holes are incorporated into the clamp-style body, giving this version additional fastening points around the larger shaft diameter.

Installing a shaft anode directly on clean, bare metal allows the sacrificial zinc to maintain electrical contact with the shaft and nearby underwater running gear. The X7's broader dimensions make clearance around the cutless bearing, strut, and propeller an important part of the installation check. Tightening the hardware evenly helps keep the two halves seated securely without placing the anode where it can contact stationary components.

Use the 1-1/2 in shaft dimension as the primary fit reference rather than choosing an anode by outside appearance alone. Compared with smaller shaft anodes, the X7 carries more zinc mass and a four-hole mounting pattern, so it should not be substituted for a different Tecnoseal size without confirming the measurements. Routine inspection during haul-out or underwater service makes it easier to replace a worn anode before protection is compromised. Browse more marine anodes.

• 2.58 in outside diameter accommodates the larger body size
• 2.62 in height provides added zinc mass around the shaft
• 1.37 lb total weight
• Four-hole fastening pattern supports even clamping