Shopping security
Navigating tight marinas or handling crosswinds during docking becomes effortless when you equip your vessel with the Lewmar 185TT 4.0 kW Gen2 12V bow thruster. Designed for boats up to around 45 feet, this tunnel thruster delivers 65 kgf of precise thrust, giving you confident control in both forward and reverse directions. Boat owners rave about its whisper-quiet operation and reliability, making it a go-to upgrade for recreational sailors and serious cruisers alike.
What sets this Gen2 model apart is its innovative engineering—no hydraulic reservoirs mean zero leaks or ongoing maintenance hassles. Instead, it relies on a robust electric system with self-resetting thermal protection, ensuring your thruster is always ready when you need it most. Whether you're a weekend warrior or a liveaboard adventurer, this thruster transforms stressful berthing into a smooth routine.
These features aren't just specs; they're real-world advantages honed from decades of Lewmar's marine expertise, ensuring your investment performs season after season.
| Specification | Details |
|---|---|
| Model | 185TT 4.0 Gen2 |
| Hub Material | Stainless Steel |
| Voltage | 12V DC |
| Power Output | 4.0 kW (5.4 HP) |
| Tunnel Diameter | 185 mm |
| Thrust | 65 kgf |
| Weight | 20 kg |
Compact yet powerful, it fits neatly into standard hull designs without compromising structural integrity.
Installation is straightforward for savvy DIYers or pros—route the included 2-meter motor cable, connect to the blue box ICU (Intelligent Control Unit), and you're set. The Gen2's plug-together switches simplify wiring, reducing install time significantly. On the water, expect instantaneous response with no warm-up, perfect for those surprise wind shifts.
Maintenance? Virtually hands-off. The self-resetting thermal cutouts protect against overuse, while the sealed system shrugs off salt spray and submersion. Pair it with Lewmar's control panels for a setup that feels custom-built for your boat.
Everything you need to get thrusting—focus on the horizon, not the toolbox.
Ideal for displacement hulls up to 45 feet (14 meters) with beam widths accommodating a 185 mm tunnel. Perfect for sailboats, motor yachts, and trawlers needing reliable bow control.
Gen2 brings black box electronics for better protection, spline-driven props for durability, and enhanced seals for longevity—no more drive pins or leak-prone reservoirs.
No, its hardened spiral bevel gears ensure ultra-quiet performance, even at full 65 kgf thrust. Many users report it's barely noticeable from the helm.
Compatible with Lewmar joysticks or touch panels. The plug-and-play design makes integration seamless with existing helm stations.
Minimal—fully sealed electric system eliminates hydraulic fluids. Annual visual checks suffice, with thermal protection handling overloads automatically.
Yes, for experienced boat owners. Cut the tunnel, mount the unit, connect cables to the ICU—most complete it in a weekend with basic tools.
Rated at 4.0 kW, it draws high amps briefly for thrust bursts. Ensure your battery bank and alternator can handle peak loads for optimal performance.
Lewmar 185TT Tunnel Thrusters
Model: 590008185TT Tunnel Thrusters
Specifications| Model | 185TT 4.0 |
| Hub | Stainless Steel |
| Voltage | 12V |
| Power (kw) | 4.0 |
| Tunnel size (mm) Tunnel size (mm) | 185 |
| Thrust(kgf) | 65 |
| Weight (kg) | 20 |
Ships within 48 hours · Estimated delivery Jun 22 - Jun 27
US$40
Get nowSign up to your membership to get coupons up to
15%
Get nowOpportunity to enjoy order discount up to 15% off
Top-Converting Item to Boost Your Average Order