Stern Thruster Tunnel Kit - 185TT

Lewmar 185TT Stern Thruster Tunnel Kit (589310)

A T-shaped filament-wound GRP stern thruster tunnel kit that mounts on a flat powerboat transom — everything needed to install a 185TT thruster at the stern for added lateral control at the back of the boat.

Why It's Worth It
Bow thrusters push the front of the boat sideways — but the stern still swings unless you have another pivot point. A stern thruster paired with a bow thruster gives you true sideways control across the full length of the boat, letting you move parallel to a dock rather than pivoting around one end. The T-shaped tunnel design is specifically engineered for transom mounting on flat-transom powerboats, directing thrust left and right efficiently. Available to match Lewmar thrusters from 140TT to 300TT, so your bow and stern thrusters can share the same control architecture.

Use
Designed for mounting on flat powerboat transoms. The 185mm tunnel diameter matches the 185TT thruster series exactly — the thruster unit is sold separately and must be ordered alongside this kit. Confirm your transom's thickness and layout against Lewmar's installation requirements before ordering.

In The Box:

185TT Stern Thruster Tunnel Kit (Thruster Sold Separately)

Package Dimensions:

Available Method: Qualifies for Ground and 2 Day

* ALL WARRANTY IS THROUGH MANUFACTURE *