The Tecnoseal Quick BTQ185 zinc anode kit is the propeller-nut-style replacement intended for Quick bow thrusters with a 185 mm tunnel. The anode takes the place of the propeller nut so sacrificial zinc is located at the rotating hardware and lower thruster assembly. This model is specifically identified as BTQ185, which is important because nearby Quick thruster sizes use different anode fitments.
Tecnoseal specifies this kit for saltwater use and notes that most thrusters require two anodes. Owners servicing both sides of the thruster should therefore verify the required quantity rather than assuming one kit completes the installation. A mounting screw is not included, so installation planning should account for the existing fastener or the correct replacement hardware.
Thruster tunnels are exposed to the same underwater corrosion environment as other submerged running gear, but their anodes can be less visible during casual inspections. Checking the BTQ185 zinc during haul-outs or scheduled thruster maintenance helps catch consumption before the protective material is exhausted. Keep the 185 mm tunnel specification with the service record so future replacements are not confused with the smaller BTQ140 kit. Browse more marine anodes.
- Anode replaces the propeller-nut position at the thruster
- Saltwater service specification comes from the manufacturer
- Two-anode requirements are common on compatible thrusters
- Installation requires a mounting screw that is not included
