Garmin GT12M Bronze Thru-Hull - 350W - 20 Degree [010-02867-02]

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GT12M Bronze Thru-Hull - 350W - 20 Degree

The GT12M Bronze Thru-Hull transducer is specifically designed for midsize fishing and cruising boats, offering reduced drag and optimal sonar performance. With a power output of 350 watts, this transducer utilizes mid-band CHIRP technology to provide clear and precise fish arches, structure, and bottom depth returns on your display.

Featuring a broad frequency range, this transducer allows you to choose the perfect frequency for the waters you're fishing. It operates in the medium frequency range, pulsing from 85-165 kHz, and provides a wide coverage area, crisp fish arches, and accurate depth readings.

With its excellent sonar sensitivity, low noise, high resolution, and target separation, this transducer ensures that you can easily distinguish fish and structures on your compatible chartplotter display.

Installation is made simple with the durable bronze housing and stem, allowing for straightforward thru-hull flush mounting. This not only minimizes drag but also optimizes beam orientation for clear sonar returns.

The transducer is equipped with Garmin's auto-identification technology, enabling plug-and-play operation as it automatically configures itself to the transducer being used.

It is compatible with various boat hull materials, including fiberglass, composite, and wood, and is available in different tilt versions to accommodate deadrise angles of 0-20° without the need for a fairing block.

Included in the box are the GT12M-THF transducer, jam nut, washer, and documentation.


  • Cable Length (Feet): 50
  • Frequency: Medium band CHIRP (85-165 kHz)
  • Power: 350 W
  • Beamwidth: 24° -16°
  • Maximum Depth: 800 ft saltwater / 1200 ft freshwater
  • Number of Pins: 8-pin
  • Housing Material: Bronze
  • Transducer Supported Deadrise Angles: 0-20°
  • Mounting Style: Thru-Hull
  • Speed Included: No
  • Temperature: Yes
  • Box Dimensions: 7"H x 7"W x 11"L WT: 7.4 lbs
  • UPC: 753759319915