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Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster

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SKU: 1000857 - UPC: 00743683033391 - MPN: 590006
$2,219.99 $2,491.57 ( / )

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The TT series of bow thrusters are designed for use with boats up to 30ft in length. They are the perfect solution for those looking for a compact and powerful bow thruster.
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Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster Product Description

Revolutionize Your Boat Maneuvering with Lewmar 185TT Gen2 Bow Thruster

Imagine docking your vessel with pinpoint precision, even in tricky crosswinds or tight slips. The Lewmar 185TT 3.0 kW Gen2 tunnel thruster delivers exactly that—exceptional sideways control powered by a robust 12V system. Designed for boaters who demand reliability without the hassle, this Gen2 model eliminates common pain points like leaks and constant upkeep, letting you focus on the joy of being on the water.

What sets the 185TT apart? Its innovative sealed gearleg means no hydraulic reservoir to fuss with, just plug-and-play simplicity. Boaters rave about the symmetric thrust from its high-performance 5-blade propellers, ensuring consistent power whether pushing port or starboard. Perfect for vessels up to around 40 feet, it punches above its weight with 58 kgf of thrust through a compact 185mm tunnel.

Standout Features That Deliver Real-World Performance

  • Maintenance-Free Design: Sealed system with no reservoir—no leaks, no fluid checks, and years of trouble-free operation. Just rinse after saltwater exposure for longevity.
  • Equal Thrust in Both Directions: Precision-engineered 5-blade propellers provide balanced power, making tight maneuvers feel effortless and predictable.
  • Advanced Protection: Black box electronics safeguard against overloads, while self-resetting thermal cutouts on motors prevent burnout during extended use.
  • Quiet and Efficient: Hardened spiral bevel gears ensure smooth, whisper-quiet operation with maximum torque transfer—no gear whine to spoil your cruise.
  • Spline-Driven Reliability: Propeller connects via splines, ditching fragile drive pins for superior durability in harsh marine environments.
  • Streamlined Flow: Minimalist hub design minimizes drag, optimizing water flow for better efficiency and responsiveness.
  • User-Friendly Controls: Pair with intuitive joystick or touch panel options; plug-together wiring simplifies setup.

These aren't just specs—they're battle-tested by sailors worldwide, from coastal cruisers to weekend warriors. The Gen2 upgrades bring smarter electronics and refined engineering, making it a smart upgrade over older models.

Technical Specs at a Glance

Specification Details
Model 185TT 3.0 kW Gen2
Voltage 12V DC
Power Output 3.0 kW (equivalent to 4HP)
Tunnel Diameter 185 mm
Thrust 58 kgf
Weight 20 kg
Hub Material Stainless Steel

Includes: 185TT 3.0 kW Gen2 thruster unit, 2-meter motor cable, and Blue Box ICU for seamless integration.

Pro Tips for Installation and Optimal Use

Installing a tunnel thruster transforms handling, but getting it right matters. Ensure your hull's tunnel diameter matches the 185mm spec precisely—fiberglass reinforcements around the opening boost strength. Position the thruster amidships for best leverage, ideally 10-15% of waterline length from the bow.

Power-wise, pair with a dedicated 12V battery bank (at least 800-1000 CCA) to avoid straining house batteries. Run heavy-gauge cables (minimum 35mm²) to minimize voltage drop. During setup, the plug-together connections and included ICU make wiring a breeze—no electrician needed for most DIYers.

For maintenance? Virtually zero. A quick freshwater flush post-use keeps seals pristine. Monitor the black box for any alerts, but expect years of service before touching it.

Pro boater insight: In currents over 2 knots, pulse the thruster in short bursts—maximizes battery life while conquering windage.

Why Boaters Choose Lewmar 185TT for Superior Control

In a sea of thrusters, the 185TT Gen2 shines for its balance of power, quietness, and simplicity. Skip the hydraulics drama; embrace electric efficiency that starts instantly, every time. Ideal for sailboats, power yachts, or multihulls needing that extra edge in marinas or locks. If you're tired of bow blowers and prop walks, this is your game-changer.

Frequently Asked Questions

What boats is the Lewmar 185TT 3.0 kW suitable for?

It's ideal for displacement hulls up to 40 feet (12 meters) LOA, providing 58 kgf thrust for confident low-speed maneuvering in typical marina conditions.

Does the Lewmar 185TT require any ongoing maintenance?

No, its sealed gearleg design eliminates reservoirs and leaks. Just periodic freshwater rinsing in saltwater use keeps it running smoothly.

What controls work with this Gen2 bow thruster?

Compatible with joystick or touch panel controls. The easy plug-together switch connections make adding proportional or on/off options straightforward.

How does the Gen2 version improve on previous models?

Gen2 features enhanced black box electronics for better misuse protection, refined thermal safeguards, and spline-driven props for increased reliability.

What battery setup is recommended for the 12V 185TT?

Use a dedicated deep-cycle battery with 800+ CCA, heavy cables (35mm²+), and a battery isolator to ensure peak performance without draining auxiliaries.

Is the thrust equal in both directions?

Yes, the 5-blade propeller design delivers symmetric thrust, offering consistent control whether port or starboard.

What's included in the package?

The kit comes with the 185TT 3.0 kW Gen2 thruster, 2-meter motor cable, and Blue Box ICU for immediate integration.

Lemar 185TT Tunnel Thrusters

Model: 590006
  • No reservoir to install, no leaks and no maintenance
  • High performance 5 blade propellers give equal thrust in both directions
  • High integrity seal
  • Spline driven propeller, no drive pin required
  • Black box electronics prevents misuse and protects motor
  • Hardened and ground spiral bevel gear for maximum efficiency and quiet power transmission
  • Self resetting thermal protection on all motors
  • Choice of Joystick or Touch Panel controls
  • Easy plug together switch connections
  • Minimum silhouette hub for smooth water flow

185TT Tunnel Thrusters

Specifications
Model 185TT 3.0
Hub Stainless Steel
Voltage 12V
Power (kw) 3.0
Tunnel size (mm) 185
Thrust(kgf) 58
Weight (kg) 20

What's in the Box:
  • 185TT 3.0 Kw 4HP Gen 2 Thruster, 2 Meter Motor Cable, and Blue Box ICU


Every Lewmar thruster is designed and manufactured with great attention to detail. High performance, ease of use and reliability are Lewmar's top priorities. In ...

Lewmar 589222 Dual Thruster Control Pad Gen2


Frequently Asked Questions (FAQ) About Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster

Who is the Lewmar?
How to describe Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster?
What is the highlights of Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster?
Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster additional informations?

Who is the Lewmar?

Since 1946, Lewmar has dedicated itself to making spending time on the water as easy and stress-free as possible; designing and manufacturing innovative and reliable products of the highest quality. With a portfolio of hardware, winches, hydraulics, windlasses, anchors, thrusters, steering systems, hatches and portlights to suit every boat from the smallest day fisher to largest mega-yacht, Lewmar can supply a complete solution whatever your project and requirements.

How to describe Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster?

Every Lewmar thruster is designed and manufactured with great attention to detail. High performance, ease of use and reliability are Lewmar's top priorities. In ...
  • No need to install a separate reservoir, no leaks and no maintenance.
  • High performance 5 blade propellers give equal thrust in both directions.
  • High integrity seal for maximum protection.
  • Spline driven propeller, no drive pin required.
  • No reservoir to install, no leaks and no maintenance
  • High performance 5 blade propellers give equal thrust in both directions
  • High integrity seal
  • Spline driven propeller, no drive pin required
  • Black box

What is the highlights of Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster?

  • No need to install a separate reservoir, no leaks and no maintenance.
  • High performance 5 blade propellers give equal thrust in both directions.
  • High integrity seal for maximum protection.
  • Spline driven propeller, no drive pin required.
  • No reservoir to install, no leaks and no maintenance
  • High performance 5 blade propellers give equal thrust in both directions
  • High integrity seal
  • Spline driven propeller, no drive pin required
  • Black box
  • Lemar 185TT Tunnel Thrusters are the best of the best.
  • No need to worry about installing a reservoir, leaks or maintenance.
  • High performance 5 blade propellers give equal thrust in both directions.
  • High integrity seal for maximum safety and reliability.
  • Spline driven propeller, no drive pin required.
  • No reservoir to install, no leaks and no maintenance
  • High performance 5 blade propellers give equal thrust in both directions
  • High integrity seal for maximum safety
  • Spline driven propeller, no drive pin required for easy installation

Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster additional informations?

Shop Now Lewmar Thrusters

Lewmar Thrusters are the world's most powerful tunnel thrusters. The Lewmar 185TT 3.0 Kw 4HP is a high-performance tunnel thruster with no reservoir to install, no leaks, and no maintenance. The high-integrity seal provides spline connection for maximum performance.

Shop Now Lewmar 185TT 3.0 Kw 4HP

Lewmar is the world's leading manufacturer of boat propellers.

Get a quote now The best tunnel thruster

The Lewmar 185TT Tunnel Thrusters are the best tunnel thrusters for boats of all sizes. They are leak-proof and maintenance-free. Plus, they have a high performance 5 blade propellers that give equal thrust in both directions.

See how these Lewmar Thrusters can help your boat Lewmar 185TT 3.0 Kw 4HP

The Lewmar 185TT Tunnel Thrusters are a high performance, high integrity seal, and spline designed for easy installation.

Learn more Lewmar Tunnel Thrusters

Lewmar is the world leader in marine propellers, and their 185TT Tunnel Thrusters are no exception. These high-performance propellers are made for boats of all sizes and are perfect for any boat owner.

Blow through your competitors

Lewmar's 185TT tunnel thrusters are perfect for any application. They're designed to provide equal thrust in both directions with 5 blade propellers and high integrity seals. With no reservoir to install, no leaks and no maintenance, these thrusters will blow your competitors away!

The only thing you'll have to worry about is how to spend all your free time

You'll never have to worry about leaks, maintenance, or a reservoir again! These Lewmar 185TT Tunnel Thrusters are easy to install and provide high performance. With 5 blade propellers that give equal thrust in both directions, you'll be able to go in any

The best tunnel thruster in the world

You want the best tunnel thruster in the world, don't you? The Lewmar 185TT is an excellent choice for you! This powerful tunnel thruster is made with high integrity seals and high performance propellers. It's easy to install and doesn't leak. What are you waiting for? Get your Lew

A new way to thrust

Lewmar's 185TT 3.0 Kw 4HP Tunnel Thrusters are the new way to thrust. No reservoir to install, no leaks and no maintenance, and high performance 5 blade propellers give equal thrust in both directions. High integrity seal and spline also make these the perfect choice for your boat.

The best in the business

Lewmar is the world's leading manufacturer of tunnel thrusters. With no reservoir to install, no leaks, and no maintenance, you can be sure that you are getting the best with a Lewmar. Lewmar's high performance 5 blade propellers give equal thrust in both directions for maximum efficiency. It also features high

The best tunnel thruster on the market

Lewmar is the world's leading manufacturer of tunnel thrusters. Our 185TT model has a high-integrity seal, no leaks, and no maintenance. If you're looking for a reliable tunnel thruster to power your boat, look no further than Lewmar.



Save $271 when you buy the Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster for only $2219 from NVN Marine! Same day free shipping before 3pm.

Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster Technical Specifications

Type: 

Boat Outfitting | Bow Thrusters

Vendor: 

Lewmar

Weight: 

35.51 lb

Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster User Reviews

Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster Shipping & Return

Shipping Weight: 

35.51 lb

Box Sizes: 

1.00 (h) x 1.00 (w) x 1.00 (l)

Cubic Feet: 

1.0

Returnable: 

Yes

USPS First Class: 

Yes

P65: 

Yes

Truck Delivery: 

Yes

For detailed shipping policy please check our Shipping Policy and you can find our Return and Refund Policy here.

Lewmar 185TT 3.0 Kw 4HP Gen2 12v Bow Thruster

$2,219.99 $2,491.57 ( / )

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