SX80/185T 12V External Stern Thruster, 80 kg (176 lbs), 185mm (7.3″) tunnel

The SX80/185T is the perfect choice for boats where the inside configuration of the boat’s stern makes a standard thruster installation impractical. When fitted with the optional cowls, the stern thruster assembly is perfect for boats with twin stern drives. The special cowls enable good performance by diverting the waterflow past the stern drive legs which normally blocks the waterflow and the thrust.


Other items to consider when purchasing a new thruster:

  • Control Panels and Remote Controls
  • AutoMainswitch, Battery Disconnect, Fuse & Fuseholder
  • 4-Wire Harnesses (when not using AutoMainswitch)
  • 5-Wire Harnesses (for use with AutoMainswitch)
  • Note:  For use between stern drives, add the Side-Power Stern Tunnel Cowls that are sold separately.

Features & Benefits:

  • Pre-assembled thruster unit in a rugged GRP casing for simple external installation.
  • Waterproof and ignition protected: can be installed in gasoline-powered boats.
  • Requires only small holes in the boat’s transom for power/control cables and mounting.
  • Serviceable when boat is lifted (refitted with new O-ring seal).




Thrust @ 10.5VDC

176 lbs (80 kg)



Thrust @ 12VDC

212 lbs (96 kg)

Typical Boat Size

35-48′ (10-15 m)

Tunnel Diameter (I.D.)

7.3″ (185 mm)

Recommended Fuse Size

400 Amps (SMANL400)

Power @ 10.5VDC

6 hp (4.4 kw)


23.50″(Width), 22.06″(Height), 31.75″(Length)

Fuse Size

400 Amp

Minimum Battery Capacity

1045 CCA SAE

Approximate Ship Weight (lbs)

Weight 170 lbs
Dimensions 31.75 × 23.50 × 22.06 in


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