Garmin GT20-TM 4-Pin 16-Degree Tilted DownVü Transducer
The Garmin GT20-TM is a 4-pin tilted DownVü transducer with a 16-degree tilt angle and listed physical dimensions of 5.9 x 2 x 0.9 in. It serves sonar applications, and marine service technicians install the unit during boat electronics service, refit, or replacement work.
Technical Specifications
| Brand | Garmin |
|---|---|
| Model | GT20-TM |
| Product Type | Tilted DownVü transducer |
| Sonar Application | DownVü sonar |
| Connector Type | 4-pin |
| Tilt Angle | 16 degrees |
| Weight | 5 lb (2.27 kg) |
| Dimensions | 5.9 x 2 x 0.9 in (149.9 x 50.8 x 22.9 mm) |
Compatibility & Applications
- Fits sonar applications calling for a Garmin GT20-TM 4-pin transducer.
- Wires to marine electronics with a matching 4-pin transducer connection.
- Pairs with tilted DownVü configurations requiring a 16-degree transducer angle.
- Drops into replacement orders matching the same Garmin tilted DownVü listing.
- Mounts during boat marine service and installation work.
- Includes package planning data for a 5 lb transducer assembly.
In a boat sonar replacement job, a technician can match the unit by connector count, DownVü format, tilt angle, package weight, and package dimensions before scheduling installation. Its defined 4-pin, 16-degree tilted DownVü configuration separates it from generic transducers without a stated connector or tilt.







