Garmin GT17M-THF 12 Degrees Transducer (010-02930-01)

Introduction

The Garmin GT17M-THF 12 Degrees Transducer delivers 1 kW of midband CHIRP sonar power designed to cut through the noise and deliver crisp, detailed underwater imaging for serious anglers and boaters. This flush-mounted thru-hull transducer operates across an 80–165 kHz frequency range, producing exceptional fish arches, sharp structure definition, and reliable bottom tracking in both freshwater and saltwater environments. Its 12-degree tilted design and stainless steel housing optimize beam orientation while minimizing drag, making it an ideal upgrade for compatible Garmin chartplotters and fishfinders.

Key Features

• 1 kW sonar output with midband CHIRP technology spanning 80–165 kHz frequency range
• Maximum depth capability of 2,400 feet in freshwater and 1,800 feet in saltwater
• Variable beamwidth of 9–18 degrees for adaptive sonar coverage across multiple fishing scenarios
• Flush-mounted 12-degree tilted thru-hull installation reducing drag while eliminating fairing block requirements on compatible hulls
• Durable stainless steel housing rated for fibreglass, composite, steel, aluminium, and wooden hull types
• Garmin Auto-ID technology with 8-pin connector enabling automatic configuration on compatible Garmin systems
• Fast-response water temperature sensor for accurate thermal readings and fish behavior analysis

Data Insights

The GT17M-THF combines 1 kW power output with a broad 80–165 kHz frequency range to deliver the flexibility needed across varying water conditions. The 9–18 degree beamwidth provides excellent target separation while maintaining wide sonar coverage, allowing efficient searching patterns without sacrificing image clarity. In freshwater environments, the transducer reaches maximum depths of 2,400 feet, while saltwater applications benefit from 1,800 feet of depth penetration. This performance level makes it capable of detecting fish and structure at competitive distances while maintaining the resolution needed for precision fishing.

Usage Instructions

Install the transducer according to supplied instructions, ensuring proper flush mounting alignment for optimal sonar beam orientation on your hull. Connect the 8-pin connector to a compatible Garmin chartplotter or fishfinder, allowing Auto-ID technology to automatically detect and configure sonar settings. Adjust frequency, gain, and sensitivity settings based on current water conditions and fishing depth. Periodically inspect and gently clean the transducer face to maintain accurate temperature readings and consistent sonar performance.

Design & Material

The GT17M-THF is engineered with rugged stainless steel construction designed to withstand the corrosive marine environment while maintaining flush installation on your hull. The 12-degree tilted design positions the sonar beam for optimal target detection on compatible hull deadrise angles, reducing turbulence and drag without requiring external fairing blocks.

• Stainless steel cylindrical housing with protective flush-mount flange for clean hull integration
• 12-degree tilted thru-hull mounting configuration optimized for beam orientation and hydrodynamic efficiency
• Ribbed external housing section providing structural reinforcement and increased surface area for thermal management
• 8-pin connector with integrated cable entry for secure, waterproof electrical connection
• Corrosion-resistant stainless steel materials rated for saltwater, brackish, and freshwater environments
• Low-drag flush design eliminating the need for external fairing blocks on compatible hull types

Final Verdict

The Garmin GT17M-THF 12 Degrees Transducer is essential equipment for boat owners upgrading their sonar capability. With 1 kW power, 80–165 kHz CHIRP frequency coverage, and depth capabilities reaching 2,400 feet in freshwater, this transducer provides the performance needed to locate fish and structure with confidence. Its Garmin Auto-ID integration ensures simple plug-and-play installation, while the stainless steel 12-degree tilted design delivers hydrodynamic efficiency and superior underwater imaging without compromising vessel performance. Whether targeting bass, walleye, or saltwater species, the GT17M-THF transforms any compatible Garmin system into a high-resolution sonar platform.