Garmin GT12M-THF Transducer

This transducer is specifically engineered for hulls with a deadrise between 8 and 15 degrees. If your boat's deadrise falls within this range, the 12-degree tilt ensures the beam points straight down for the most accurate sonar readings.

Bronze is significantly more durable and resistant to corrosion, making it the preferred material for long-term thru-hull installations. It provides a robust, professional-grade seal that holds up well in both saltwater and freshwater environments.

The GT12M-THF uses a standard 8-pin connector compatible with many Garmin GPSMAP and ECHOMAP series devices. We recommend checking your specific display's manual or the Garmin transducer compatibility guide to ensure your unit supports mid-band CHIRP sonar.

Mid-band CHIRP offers a great balance between depth penetration and image detail. It is highly effective for general fishing and cruising, providing clear target separation at depths up to 1200 feet in freshwater or 800 feet in saltwater.

Yes, this unit includes a built-in temperature sensor. It will report accurate water temperature readings directly to your compatible Garmin display alongside your depth data.

Because it is a thru-hull mount, it remains submerged and protected from turbulence, which helps maintain a consistent signal even when the boat is on plane. However, proper installation is critical to ensure the transducer is flush with the hull to prevent drag or cavitation.