B258 Through-Hull Transducer

Bronze, 1kW, Dual Frequency (50/200 kHz) for CP370 Sonar

Product Options
B258 Through-Hull Transducer

B258 Overview

The B258 features 4 internal ceramics for increased sensitivity and better deep water performance. The included fairing block ensures uninterrupted performance, even at speed.

The B258 is 25 times more sensitive than a single-element 50/200 kHz transducer. This innovative 1 kW transducer makes 600 W fishfinders perform like their more powerful big brothers — especially at 50 kHz. How does it do it? The B258 uses a high-performance ceramic-element construction. The resulting narrow beams will clearly distinguish individual fish and bottom fish from their habitat at depths down to 670 m (2,200’). 

Included with the B258 is a custom fit, high-performance fairing block.  When installed properly, this transducer is capable of clear images and a clean bottom trace at speeds over 30 knots (34 MPH.)

B258 Models

B258 Transducer

SKU: E66082
B258 Transducer
  • Deadrise Angles: 0 - 26°

B258 Transducer Resources

General Specifications




Power (RMS)


Max Depth

2,200 Ft. (L) / 1,000 Ft. (H)


50 / 200 kHz

Beam Width

15° x 21° @ 50 kHz, 3° x 5° @ 200 kHz (Elliptical pattern)


Depth / Temperature

Hull Material

Fiberglass / Wood

Cable Length

30 Ft. / 9 M.