• Description

GSD™ 25 Premium Sonar Module

The GSD 25 premium sonar module is a remote network solution that provides outstanding fishfinding and bottom tracking capabilities. It offers dual-channel 1 kW CHIRP, plus Garmin CHIRP DownVü and SideVü sonar scanning for the clearest scanning images on the water. The images sent to your compatible Garmin chartplotter have target details so clear and precise, you can actually distinguish between small and closely spaced fish at key fishing depths all the way down to 5,000 feet.For the serious offshore sportfisherman, this "one-box" remote network sonar solution provides outstanding fishfinding and depth sounder capabilities for vessels with networked MFD installations.

True Dual-Channel 1kW CHIRP

CHIRP is the most sophisticated sonar technology available for use by the fishing and boating public. CHIRP is an acronym for Compressed High-Intensity Radiated Pulse. What it means to you is much better target resolution, clarity and crispness than any other sonar system. Having Garmin true dual 1 kW CHIRP as your traditional sonar allows you to adjust CHIRP frequencies to low/medium, low/high, medium/high to further optimize your sonar performance. Transducer sold separately.

Clearest Scanning Sonar Images on the Water

Adding CHIRP technology to DownV resolution, target separation and clarity of the sonar images of fish and structure that pass below and to the sides of your boat. Built-in to our new GPSMAP xsv combos and GSD 25 Premium Sonar Module, it uses 1 transducer for traditional CHIRP HD-ID sonar and CHIRP DownVü and SideVü scanning sonar. Transducer sold separately.

Choose a Garmin Transducer

This sonar is so unique Garmin has developed their own proprietary transducers that are specially designed to work with the sonar to provide the very best performance.

Features:

  • Offers dual-channel 1kW CHIRP
  • SideVü and DownVü sonar scanning for the clearest images on the water
  • Target detail so precise you can actually distinguish between small and closely spaced fish at key fishing depths
  • Depth capability to 5,000 feet

Compatible Devices:

  • GPSMAP® 8000 Glass Helm Series
  • GPSMAP® 7400/7600 Series Displays

In The Box

  • GSD 25
  • Right-angle power cable (6 feet)
  • Right-angle network cable (6 feet)
  • Mounting hardware
  • Documentation

Connections

  • Transducer pin numbers: 8 Pin and 12 Pin

WarningWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.


Brochure (pdf)

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.
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Feedback From Our Customers

At Green Vista Living, we pride ourselves on delivering top-quality products and exceptional service to solar professionals and homeowners alike. Here's what our customers have to say about their experiences with us.

Kevin Leary
May 18, 2025
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Incredible Tech Support from Anees of Green Vista Living. Exceptional service and went above and beyond on every question.

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Off grid Kit • Dec 21, 2025
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Shipment was slow due to high demand, but the team kept me informed and ensured everything arrived properly.

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