Enhance your boat's maneuverability with the Lewmar 14 Stern Thruster Tunnel Kit, designed specifically for seamless integration with 140TT thrusters. This robust tunnel kit provides the essential housing to mount your stern thruster, ensuring precise control during docking and tight marina slips. Boat owners rave about how it transforms handling, especially in crosswinds or currents, making every outing smoother and less stressful.

Precision Engineering for Marine Demands

Crafted from high-grade glass-reinforced plastic (GRP), this tunnel kit stands up to harsh saltwater environments, resisting corrosion and fatigue over years of use. Its 140mm diameter matches perfectly with Lewmar's 140TT series, creating a streamlined propeller tunnel that minimizes drag while maximizing thrust efficiency. Unlike makeshift solutions, this pre-formed kit slots into hulls effortlessly, reducing installation headaches and ensuring hydrodynamic performance.

Ideal for Stern Thruster Upgrades

Stern thrusters shine for larger vessels where bow thrusters alone fall short. Picture reversing confidently into a berth without the usual swing and miss. This kit supports thrusters up to demanding power levels, ideal for yachts from 40 feet and up. Boaters often install it during refits, pairing it with the matching 140TT for a factory-fresh feel.

• Durable GRP Construction: Lightweight yet tough, bonds seamlessly with fiberglass hulls.
• Optimized Flow Design: Smooth interior channels water efficiently to the propeller.
• Easy Hull Integration: Flange design simplifies fairing and sealing.
• Proven Reliability: Trusted by professional skippers worldwide for consistent operation.

Boost Your Boating Confidence

Installing a stern thruster tunnel like this one addresses common pain points: poor low-speed control and propeller wash issues. It delivers lateral thrust right where you need it—at the stern—allowing single-handed docking or effortless tandem berthing. Many owners report fewer gelcoat scrapes and reduced reliance on bow lines, freeing up crew for other tasks. For sailboats, it counters weather helm effectively; for powerboats, it sharpens tight turns.

Practical Tips from Seasoned Installers

Position the tunnel low in the hull for optimal bite, ideally aft of the propeller shaft to avoid interference. Use marine-grade epoxy for bonding, and always reinforce with stringers for vibration dampening. Test-fit before cutting—precision pays off in thrust response. Regular anode checks keep the system electrochemically protected, extending service life significantly.