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Trending Now Garmin Gt21 Th Thru-hull Mount Transducer - 8 Pin Kit [lNLZC6Q1]

$60.99 $195.99 -69%

Garmin GT21 TH Thru-hull Mount TransducerIntroducing the Garmin GT21 TH Thru-hull Mount Transducer, the ultimate choice for coastal and offshore fishermen seeking advanced sonar technology. This high-performance transducer is designed to deliver exce

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Trending Now Garmin Gt21 Th Thru-hull Mount Transducer - 8 Pin Kit [lNLZC6Q1]

Garmin GT21 TH Thru-hull Mount Transducer

Introducing the Garmin GT21 TH Thru-hull Mount Transducer, the ultimate choice for coastal and offshore fishermen seeking advanced sonar technology. This high-performance transducer is designed to deliver exceptional clarity and detail, making it an essential tool for any angler looking to enhance their fishing experience. With its robust stainless steel stem and CHIRP ClearVü scanning sonar, the GT21 TH offers superior target separation and clear definition of underwater structures, ensuring you never miss a fish or a hot spot.
  • CHIRP ClearVü scanning sonar for unparalleled clarity
  • Traditional sonar for depth and fish detection
  • Stainless steel stem for durability and reliability

Advanced Features and Specifications

The Garmin GT21 TH Thru-hull Mount Transducer is packed with cutting-edge features and specifications that set it apart from the competition. The CHIRP ClearVü element operates at 260/455 kHz, providing a power rating of 500 W, while the traditional sonar operates at 50/200 kHz with a power rating of 600 W. This dual-frequency setup ensures you have the best of both worlds, whether you're searching for fish or mapping out underwater terrain. The built-in fast-response temperature sensor adds an extra layer of information, helping you make informed decisions on the water.
  • CHIRP ClearVü frequencies: 260 kHz (245–275 kHz) and 455 kHz (445–465 kHz)
  • Traditional sonar frequencies: 50/200 kHz
  • Beamwidth: Traditional: 40 degrees / 10 degrees

Perfect for Coastal and Offshore Fishing

Whether you're a seasoned angler or a weekend warrior, the Garmin GT21 TH Thru-hull Mount Transducer is the perfect addition to your fishing gear. Its versatility makes it ideal for a wide range of fishing scenarios, from shallow coastal waters to deep-sea fishing expeditions. The transducer is designed for hull deadrises less than 25 degrees, ensuring compatibility with various boat types. With its easy-to-follow installation instructions and comprehensive package, you'll be up and running in no time, ready to catch more fish and explore new waters.
  • Maximum depth: Traditional: 1,500 ft.; ClearVU: 1,000 ft.
  • Included in the package: 8-pin transducer, stainless steel stem, fairing block, isolation plate, bushings, mounting hardware, and installation instructions

What Our Customers Say

January 27, 2026

Absolutely no complaints!

Really, really pleased with this.

- Ethan Q..

January 27, 2026

Absolutely no complaints!

A very solid and extremely useful item.

- Julius W..

January 27, 2026

Absolutely no complaints!

I'm impressed by its simplicity.

- Riley R..

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