Vetus Replacement Bow Thruster Zinc Anode
At least once a year, you should replace the protective zinc anode on the outside of the thrustertailpiece (the bronze gearbox that is located underwater, in the thruster tube). This chunk of zinc is intended to be eaten away by electrolysis, and if it's not there, or is much reduced, your tailpiece, including the inner sections of the thruster prop shaft, will deteriorate if there is straycurrent in the water around your boat, either from your boat, another boat or the marina electrical system.
Model SET0148: designed for Vetus BOW25
Imperial dimensions are approximate. The manufacturer built this product to metric specs.