Garmin GT51M-TH Transducer is a rugged thru-hull solution designed for coastal and offshore anglers who demand precision, clarity, and durability. With a stainless steel stem and a packaging that includes everything you need for a secure install, this 12-pin transducer unlocks CHIRP traditional sonar, CHIRP ClearVü, and CHIRP SideVü scanning sonar in one robust package.

Experience ultra-crisp fish arches and exceptional target separation, plus clear images of bottom structure and objects that pass beneath and to the sides of your boat—even in rough sea conditions. The GT51M-TH is optimized for hull deadrises up to 5 degrees, delivering reliable performance where it matters most on offshore and nearshore adventures.

Performance and imaging

• CHIRP Traditional sonar — 600 W; mid-band CHIRP 80-160 kHz for deep, high-contrast bottom and targets
• CHIRP ClearVü/SideVü — 500 W per element; high-resolution scanning sonar for below and to the sides
• Frequencies — CHIRP mid-band 80-160 kHz; ClearVü/SideVü at 260 kHz (245-275 kHz) and 455 kHz (445-465 kHz)
• Beamwidth — Traditional 24°-13°; ClearVü/SideVü 2.0°x51° at 260 kHz and 1.4°x29° at 455 kHz
• Depth performance — Traditional up to 1,800 ft; ClearVü up to 1,000 ft; SideVü up to 750 ft
• Depth/Speed/Temperature — Built-in fast-response temperature sensor for precise water-temp readings

Rugged design and complete installation

• 12-pin transducer with a stainless steel stem for durability in challenging conditions
• Includes fairing block, isolation plate and bushings, mounting hardware, and installation instructions
• Designed for hull deadrises up to 5 degrees, ensuring dependable performance in rough seas

Included in the model 010-01966-10 package, the Garmin GT51M-TH delivers comprehensive sonar capabilities—traditional CHIRP plus high-resolution CHIRP ClearVü and SideVü—so you can see fish, structure, and targets with unmatched clarity. Perfect for serious anglers who demand accurate, versatile scanning sonar and a robust, long-lasting transducer that stands up to demanding marine environments.