The Garmin GT17M-THF SS is a stainless steel thru-hull transducer delivering 1 kW mid-band CHIRP sonar (80–165 kHz) with flush, zero-degree mounting for minimal drag. It clearly resolves fish arches, structure, and bottom composition down to 1,800 ft in saltwater and 2,400 ft in freshwater, and integrates via Garmin Auto-ID for straightforward plug-and-play setup on compatible chartplotters.

Mid-band CHIRP coverage across 80–165 kHz provides a 9°–18° beamwidth that balances wide-area coverage with target separation, delivering high resolution and low noise returns. The stainless steel housing and stem support thru-hull flush installation at 0° tilt, compatible with hull materials including fiberglass, composite, steel, aluminum, and wood — accommodating deadrise angles from 0° to 7° without a fairing block. A fast-response temperature sensor and RapidReturn sonar compatibility round out the feature set.

In the Box:

• GT17M-THF transducer
• Jam nut
• Spacer
• 2 washers
• 2 set screws
• Thread isolator
• Hull isolator
• Documentation

Specifications:

• Transducer Frequency: Mid-band CHIRP (80–165 kHz)
• Transducer Power: 1 kW
• Transducer Beamwidth: 9°–18°
• Maximum Depth: 1,800 ft saltwater / 2,400 ft freshwater
• RapidReturn Sonar Compatible: Yes
• Cable Length: 50 ft
• Sensing: Depth and temperature
• Connector: 8-pin
• Supported Deadrise Angle: 0° version supports hull deadrise angles from 0° to 7°
• Housing Material: Stainless steel