The Garmin GT17M-THF SS is a stainless steel thru-hull transducer built for serious depth performance, pushing mid-band CHIRP sonar across 80–165 kHz to resolve fish arches, structure, and bottom composition down to 1,800 ft in saltwater and 2,400 ft in freshwater. The zero-degree flush mount keeps hull drag to a minimum, and Garmin Auto-ID makes pairing with compatible chartplotters a straightforward plug-and-play process. A fast-response temperature sensor and RapidReturn sonar compatibility round out a capable package for anglers who demand clean, high-resolution returns at depth.

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° (no fairing block required)
• Compatible Hull Materials: Fiberglass, composite, steel, aluminum, and wood
• Housing Material: Stainless steel
• Installation Type: Thru-hull flush mount, 0° tilt