Description
Garmin GST 43 Thru-Hull Speed/Temp Transducer | Boat Supply Store
For boaters requiring precise keel-up water speed and temperature data, this Garmin thru-hull transducer serves as a direct 43mm retrofit for existing Nexus installations. It accurately measures hydrodynamic velocity and ambient water thermal conditions. When paired with the included GST 10 module, it facilitates seamless data transmission via NMEA 2000 to compatible Garmin chartplotters and instrument displays, essential for performance tuning and navigation on the intracoastal waterways.
Key Features
- Measure precise water speed for optimal vessel performance.
- Monitor accurate water temperature for fishing or navigation decisions.
- Install a robust thru-hull design directly into your vessel's hull.
- Retrofit existing Nexus 43mm thru-hull installations with minimal effort.
- Integrate data effortlessly with NMEA 2000 networks via the bundled GST 10.
- Display critical speed and temperature information on compatible Garmin units.
- Simplify system upgrades by leveraging existing hull penetrations.
- Ensure reliable data acquisition for critical boating functions.
Specifications
| Product Specifications | |
|---|---|
| Measures Water Speed | Yes |
| Measures Water Temperature | Yes |
| Thru-Hull Design | Yes |
| Retrofit Capability | Nexus 43mm thru-hull transducers (TH43) |
| Connectivity | NMEA 2000 (via bundled GST 10) |
| Compatibility | Garmin chartplotters and instrument displays |
Who This Is For
Boaters seeking a direct upgrade path for legacy Nexus 43mm thru-hull speed and temperature sensors. Ideal for those integrating accurate real-time water data into their existing Garmin NMEA 2000 network.
How It Compares
| Feature | Garmin GST 43 Thru-Hull Speed/Temp Transducer | SeatalkNG |
|---|---|---|
| Measures Water Speed | Yes | Yes, Yes |
| Measures Water Temperature | Yes | Yes, Yes |
| Thru-Hull Design | Yes | Yes, Yes |
| Nexus 43mm Retrofit | Yes | No, No |
| NMEA 2000 Connectivity | Yes (via GST 10) | Yes, Yes |
| Bluetooth Connectivity | No | Yes, No |
| Hull Angle Measurement | No | Yes, No |
Common Concerns Answered
Does this transducer work with any NMEA 2000 system?
The Garmin GST 43 requires the included GST 10 module to connect to a NMEA 2000 network, ensuring compatibility with a wide range of Garmin displays. It is not a standalone NMEA 2000 device.
Can I use this to replace any old thru-hull transducer?
This transducer is specifically designed as a direct retrofit for existing Nexus 43mm thru-hull installations (TH43). It is not a universal replacement for other transducer sizes or brands.
What if I already have a NMEA 2000 backbone?
The GST 10 module bundled with the GST 43 connects to your existing NMEA 2000 backbone, providing speed and temperature data to your compatible Garmin display without requiring complex new wiring.
Frequently Asked Questions
What is the Garmin GST 43 Thru-Hull Speed/Temperature Transducer?
The Garmin GST 43 is a marine transducer designed to be installed through the hull of a vessel to measure water speed and temperature, specifically serving as a 43mm retrofit for Nexus transducers.
What information does the Garmin GST 43 Transducer provide?
The GST 43 provides two critical data points: the speed of the water flowing past the hull and the current water temperature.
Can the Garmin GST 43 replace an existing Nexus 43mm thru-hull transducer?
Yes, the GST 43 is engineered as a direct retrofit solution for existing Nexus 43mm thru-hull installations (TH43).
How does the Garmin GST 43 connect to a display?
The GST 43 connects to compatible Garmin chartplotters or instrument displays via NMEA 2000, utilizing the included GST 10 module for network integration.
What is the purpose of the GST 10 bundled with the GST 43?
The GST 10 is a critical interface module that translates the speed and temperature data from the GST 43 transducer into the NMEA 2000 protocol, allowing it to be transmitted to and displayed on compatible marine electronics.
