Garmin B75M Bronze 12° Thru-Hull Transducer - 600W, 8-Pin

The Garmin B75M Bronze 12° Thru-Hull Transducer is a professional-grade sonar transducer engineered for reliable depth and temperature data on Garmin marine networks. Built with a flush-mounted bronze housing and a tilted internal element, this 600W transducer accommodates hulls with varying deadrises without requiring a fairing block—a practical advantage that simplifies installation on boats with non-standard hull geometry.

The 12° tilt angle is factory-optimized to provide consistent acoustic performance across a wide range of hull configurations. Operating at 600 watts with an 8-pin connector, the B75M Bronze supports both traditional and Spread Spectrum scanning modes when paired with compatible Garmin sonar units like the GSD 26. This broadband design delivers clean, detailed target separation and bottom definition—critical for accurately identifying structure, thermoclines, and fish-holding areas in both shallow coastal waters and deeper offshore environments.

This transducer suits fishermen and boaters who demand reliable sonar performance without the installation complexity of fairing blocks. Weekend anglers fishing lakes and coastal bays benefit from accurate depth readings and water temperature monitoring, while serious offshore operators appreciate the broadband scanning flexibility and the rugged bronze construction that withstands saltwater corrosion. The thru-hull mount design integrates seamlessly into a Garmin Marine Network, feeding real-time sonar data directly to compatible chartplotters and fish-finders.