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Premium Marine Quality Parts

Garmin

Garmin GT12M Bronze Thru-Hull - 350W - 12 Degree

LSN 100051 MPN 010-02867-01 UPC 753759319908 MFR Garmin
Special Order
BC, Warehouse

"Special Order" items will take longer to process and ship then "Express" items.
Typically takes no more then 14 days for delivery.

For next day parts. Visit our express parts catalog Here.
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$555.99
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GT12M Bronze Thru-Hull - 350W - 12 Degree

Designed for reduced drag and optimum sonar performance on midsize fishing and cruising boats, this flush-mounted, 350-watt mid-band CHIRP transducer clearly defines fish arches, structure, and bottom depth returns on your display.

Midband Chirp Traditional Sonar

This 8-pin, 350-watt bronze thru-hull transducer features high-definition mid-band CHIRP sonar that clearly defines fish targets and structures down to 800’ in saltwater and 1,200’ in freshwater.

Broad Frequency Range

Use the perfect frequency for the waters you’re fishing. Covering the medium frequency range, this transducer pulses from 85–165 kHz, displaying a wide coverage area, crisp fish arches, and accurate depth readings.

Optimum Ping Sensitivity

Offering excellent sonar sensitivity, low noise, high resolution, and good separation of targets, this robust transducer makes it easier than ever to distinguish fish and structure on your compatible chartplotter display.

Thru-Hull Installation

A durable bronze housing and stem offer straightforward thru-hull flush mounting for minimum drag and optimum beam orientation for clear sonar returns.

Auto-ID Technology

Enjoy simple plug-and-play operation with Garmin auto-identification technology — which enables the sonar to automatically configure itself to the transducer being used.

Fits Various Hull Types

Configurable for a wide variety of boat hull materials, including fiberglass, composite, and wood, the transducer is available in a range of tilt versions to accommodate deadrise angles of 0–20° without a fairing block.

In the Box:

  • GT12M-THF transducer
  • Jam nut
  • Washer
  • Documentation

Specifications:

  • Transducer Frequency: Medium band CHIRP (85-165 kHz)
  • Transducer Power: 350 W
  • Transducer Beamwidth: 24° -16°
  • Transducer Maximum Depth: 800 ft saltwater / 1200 ft freshwater
  • Transducer Cable Length: 50 ft
  • Transducer Depth/Speed/Temperature: Depth, temperature
  • Transducer Number of Pins: 8-pin
  • Housing Material: Bronze
  • Transducer Supported Deadrise/Transom Angles: 12° supports hull deadrise angles from 8° to 15°

Documentation

Installation GuideDownload PDF
Northern Marine Canada
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Serving customers across Canada & the USA with marine parts and accessories.
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About Us

Northern Marine is a Canadian supplier of premium marine and RV parts and accessories from top industry brands. We focus on quality, accurate listings, and dependable fulfillment so you can maintain, repair, and outfit your boat or RV with confidence.

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