Garmin B175M Bronze 20° Thru-Hull Transducer - 1kW, 8-Pin

The Garmin B175M Bronze 20° Thru-Hull Transducer – 1kW, 8-Pin delivers professional-grade sonar performance for serious anglers and recreational boaters who demand reliable fish detection and bottom mapping. This thru-hull transducer is engineered for vessels ranging from center consoles to larger offshore platforms, providing the consistent, high-resolution imaging needed to locate structure, thermoclines, and actively feeding fish at various depths. Bronze construction ensures corrosion resistance in saltwater environments, making this transducer an ideal choice for extended offshore operations and year-round freshwater deployment.

Operating at 1 kilowatt output with a 20-degree cone angle, the B175M Bronze transducer strikes an optimal balance between coverage width and target definition. The 20-degree beam narrows your sonar footprint compared to wider-angle alternatives, allowing for precise identification of individual fish and bottom hardness variation—critical when working structure-heavy grounds or tight channels. The 8-pin connector integrates seamlessly with Garmin's ecosystem of chartplotters and marine electronics, including legacy and current CHIRP-enabled systems, ensuring straightforward installation and immediate compatibility with your existing helm setup.

Thru-hull mounting suits hull designs with sufficient deadrise and transom space; proper installation requires minimal through-deck penetration and clean conduit routing to avoid signal degradation. Boaters operating in mixed saltwater and freshwater zones benefit from the bronze housing's extended service life, while the robust 1kW power output maintains signal clarity even at greater depths or when running at cruising speed. This transducer works best paired with Garmin sonar modules rated for 1kW operation, delivering the real-time bottom contour and fish-arch data that separate productive fishing days from unproductive ones.