Meet the Garmin GT51M-TM Transducer Transom Mount 12-Pin — a battle‑tested solution built for coastal and offshore anglers who demand CHIRP traditional sonar, CHIRP ClearVü, and CHIRP SideVü scanning sonar in one rugged package. This transom‑mounted transducer delivers clear, crisp fish arches with superb target separation and vivid images of structures and fish that pass below and to the sides of your boat, even when seas are rough.

Powerful and versatile, the GT51M‑TM combines multiple CHIRP technologies for complete visibility:

• 600 W power with mid-band CHIRP frequencies 80–160 kHz for deep, wide coverage.
• 500 W per element with 260 kHz (245–275 kHz) and 455 kHz (445–465 kHz) frequencies for high‑definition scanning forward, below, and to the sides.
• Excellent object, structure, and fish visualization beneath and to the sides of your vessel, with superior target separation in challenging conditions.
• Fast response depth and temperature data to accompany your sonar view.
• Optimized for rough sea conditions with compatibility for 0°–70° transom angles.

Technical specifications

• CHIRP Mid-band (80–160 kHz) for Traditional; CHIRP 260 kHz (245–275 kHz) and 455 kHz (445–465 kHz) for ClearVü/SideVü
• Traditional 600 W; ClearVü/SideVü 500 W per element
• Traditional 24°–13°; ClearVü/SideVü 2.0°×51° at 260 kHz and 1.4°×29° at 455 kHz
• Traditional 1,800 ft; ClearVü 1,000 ft; SideVü 750 ft
• 30 ft
• 12-pin
• 0°–70° transom
• 12-pin transducer with mounting hardware and installation instructions
• 010-01966-00
• 753759152918

What’s in the box

• GT51M‑TM transducer with 12-pin connector
• Mounting hardware
• Installation instructions

Note: Follow the installation instructions carefully to avoid damaging your boat and ensure optimal performance. This transceiver is designed to help you lock onto fish arches with clarity, map structure with confidence, and track bait and terrain with precise temperature data — giving you a competitive edge on the water.