$800.00 $1,380.00


NB UNIT ONLY - No mounting hardware

The TM258 sports a new look and better high-speed performance.

The 1kW transom-mount transducer has a rugged, mounting bracket. The sleek design makes the TM258 easier to install. And its streamlined shape will give you improved high-speed performance up to 30 knots (35 MPH).

The TM258 will make 600W sounders respond like a more-powerful model. Get 16-times the sensitivity compared with a standard transom-mounted transducer.

The TM258 packs four, 50 kHz/200kHz elements to focus narrow beams at both frequencies, so you’ll see crisp targets and clear bottom definition.


  • Depth and fast-response water temperature sensor
  • Elliptical beam covers a large bottom area.
  • Fits existing TM256 and TM258 models.
  • Bracket kick up assembly locks in the "up" position and will not damage the transom.
  • Accommodates transom angles between 3° and 21°
  • Urethane housing
  • Boat size: Up to 12 m (40')


  • Depth & Temperature
  • 50/200 kHz
  • 1 kW RMS
  • High-Performance
  • Cable: 30ft (10m) Cable