Garmin GST™ 43 Thru-Hull Speed/Temperature Transducer

The Garmin GST™ 43 Thru-Hull Speed/Temperature Transducer is essential equipment for serious anglers and boaters who rely on accurate water data to optimize their time on the water. This dual-function transducer measures both hull speed and water temperature, feeding real-time data directly to your Garmin chartplotter or marine display. Whether you're targeting specific fish species that respond to temperature changes or navigating unfamiliar waters with confidence, the GST 43 eliminates guesswork and helps you make smarter decisions at the helm.

Engineered for permanent thru-hull installation, the GST 43 uses proven transducer technology to deliver consistent speed and temperature readings in freshwater and saltwater environments. The transducer housing is precision-designed to minimize drag while maintaining acoustic integrity, ensuring your boat's performance isn't compromised. Garmin's proven sensor design eliminates the drift and calibration issues that plague lower-quality alternatives, giving you reliable data you can act on throughout your entire fishing season or cruising expedition.

The GST 43 integrates seamlessly with all current Garmin marine electronics systems, including GPSMAP and echoMAP series plotters, making it ideal for both new installations and upgrades to existing systems. Installation requires a thru-hull mounting location below the waterline, typically on the transom or hull bottom; professional marine installation is recommended to ensure proper alignment and performance.