Lewmar 589101 Tube F/140TT 140X5X750

The Lewmar 589101 Tube F/140TT is a 750mm fiberglass extension tube engineered for Lewmar TT140 bow thrusters, delivering the precise shaft length marine operators need for clean, efficient thruster installation. Built for serious boatowners and marine technicians who demand OEM-grade compatibility, this tube ensures your thruster system operates at peak performance without compromises. Whether you're upgrading an existing system or completing a new build, this component is essential for proper thruster alignment and functionality.

Constructed from marine-grade fiberglass, the Lewmar 589101 tube combines lightweight durability with corrosion resistance—critical traits in saltwater and freshwater environments alike. The 750mm length (approximately 29.5 inches) is precision-engineered to integrate seamlessly with TT140 bow thruster systems, maintaining proper shaft geometry and minimizing stress concentrations that could compromise reliability. Fiberglass construction provides excellent fatigue resistance and requires minimal maintenance, making it the standard choice for demanding marine applications where equipment failure is not an option.

This tube is specifically designed for operators of vessels equipped with Lewmar TT140 bow thrusters seeking proper shaft extension and alignment. Whether managing a recreational cruiser or commercial workboat, correct thruster shaft length directly impacts maneuverability and reduces unnecessary wear on bearings and seals. At 4 lbs, the Lewmar 589101 contributes minimal weight while delivering the structural rigidity required for reliable bow thruster performance season after season.