Tech Specs
In The Box
GT56UHD-TM transducer
Power cable
Bail mount with knobs
Protective sun cover
Trim caps
Hardware
Documentation
Manual & Warranty
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
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Tech Specs
In The Box
GT56UHD-TM transducer
Power cable
Bail mount with knobs
Protective sun cover
Trim caps
Hardware
Documentation
Manual & Warranty
Trade-In
Do you have an old GPS unit lying around? The GPS Nation Trade In and Up program is a great way to trade in your old and used GPS for credit towards a new GPS. The choice is entirely yours! We’ve made the process simple and streamlined. Follow these simple steps, and you will be on your way to receiving credit towards your brand new GPS!
1. Get a quote
To get your free quote, provide your GPS type, manufacturer, model, and condition. Within 24 hours, you will receive a quote for the trade-in value of your current product. The GPS trade-in/trade-up form is at the bottom of this page.
2. Ship your product(s) for trade
After accepting our offer, pack your product(s) safely and ship them to us using the pre-paid shipping label provided to you. We will provide a confirmation email when your trade-in arrives at our warehouse. You have 30 days from the date you complete your on-line trade to ship the product to GPS Nation.
3. Make your purchase
Once we receive your product at our warehouse and we validate the stated condition, we will send you a confirmation email. If you elect to receive credit towards a new GPS at gpsnation.com, your store credit will be issued, and you are free to make your purchase.
Overview
Garmin ECHOMAP Ultra 2 166sv Chartplotter with GT56UHD-TM Transducer (010-03386-01)
Introduction
The Garmin ECHOMAP Ultra 2 166sv is designed to provide anglers with an elite-level fishing and navigation experience. Built around a large 16-inch Full HD display, this chartplotter offers outstanding visibility, brightness, and readability, making it easier to interpret sonar returns, view detailed charts, and manage navigation information in any environment.
Equipped with the GT56UHD-TM transducer, the system delivers Garmin CHIRP traditional sonar together with Ultra High-Definition ClearVü™ and SideVü™ scanning sonar technologies. These advanced sonar capabilities produce highly detailed underwater images that help anglers locate fish, identify structures, and better understand underwater terrain.
With support for Garmin's complete LiveScope™ sonar lineup, voice command functionality, wireless networking, HDMI screen sharing, and advanced GPS positioning, the ECHOMAP Ultra 2 166sv offers a comprehensive solution for anglers seeking professional-grade performance on the water.
Key Features
Large 16-Inch Full HD Display
- Expansive 16-inch Full HD touchscreen provides exceptional image clarity.
- Keyed assist controls offer convenient operation in various boating conditions.
- Large viewing area improves chart and sonar interpretation.
GT56UHD-TM Transducer Included
- Garmin CHIRP traditional sonar for reliable fish detection.
- Ultra High-Definition ClearVü™ scanning sonar delivers detailed views beneath the boat.
- Ultra High-Definition SideVü™ scanning sonar provides wide-area underwater coverage.
LiveScope™ Sonar Compatibility
- Supports the complete range of Garmin LiveScope™ live-scanning sonar systems.
- Enables real-time underwater viewing when paired with compatible transducers.
- Enhances fish tracking and target identification.
HDMI Screen Sharing
- Built-in HDMI output allows connection to televisions and external displays.
- Share sonar and navigation screens with crew members.
- Ideal for larger vessels and advanced fishing setups.
Bluetooth® Voice Control
- Integrated Bluetooth® technology supports voice command functionality.
- Control Force® trolling motor modes, favorite keys, and sonar functions hands-free.
- Improves convenience while operating the vessel.
Advanced Mapping Capabilities
- Compatible with Garmin Navionics+™ mapping.
- Supports Garmin Navionics Vision+™ premium chart upgrades.
- Provides detailed charts, depth contours, and navigational data.
Performance Insights
The ECHOMAP Ultra 2 166sv combines advanced sonar technologies with one of Garmin's largest chartplotter displays to create a powerful fish-finding platform. The GT56UHD-TM transducer produces highly detailed sonar images that help anglers distinguish fish, structures, vegetation, and bottom contours with impressive accuracy.
The large Full HD display provides ample screen space for split-screen viewing, allowing sonar, charts, and navigation data to be displayed simultaneously without sacrificing detail. High-contrast sonar color palettes improve target recognition and make underwater features easier to interpret.
Multi-band GPS technology delivers enhanced positioning accuracy, helping anglers mark productive fishing spots, create precise routes, and navigate confidently in a wide range of conditions.
Usage Instructions
Install the ECHOMAP Ultra 2 166sv using the included bail mount and connect the GT56UHD-TM transducer according to Garmin installation guidelines. Configure chart, sonar, and GPS settings based on your boating and fishing preferences.
Pair the chartplotter with the ActiveCaptain® app to access software updates, screen recording features, Quickdraw™ Community content, and additional connectivity options. Connect compatible LiveScope™ sonar systems to unlock real-time underwater imaging capabilities.
For enhanced boat control, wirelessly connect the chartplotter to a compatible Force® trolling motor and use voice commands to manage key functions while keeping your hands free for fishing.
Design & Construction
The ECHOMAP Ultra 2 166sv is built for anglers who require premium performance and durability. The large Full HD touchscreen is complemented by keyed assist controls, ensuring reliable operation in changing marine conditions.
The adjustable bail mount allows flexible installation and viewing angle adjustments, while HDMI connectivity expands display options beyond the chartplotter itself. Combined with advanced networking and sonar technologies, the system is designed to meet the demands of serious fishing enthusiasts.
Design Highlights
- 16-inch Full HD touchscreen display
- Keyed assist controls
- GT56UHD-TM transducer included
- Garmin CHIRP traditional sonar
- Ultra High-Definition ClearVü™ sonar
- Ultra High-Definition SideVü™ sonar
- Full LiveScope™ sonar compatibility
- HDMI output for external display sharing
- Bluetooth® voice command support
- Multi-band GPS positioning
- Wireless networking capabilities
- NMEA 2000® network compatibility
- ActiveCaptain® app integration
- Force® trolling motor compatibility
- Screen recording functionality
- Adjustable bail mount with tilt capability
Final Verdict
The Garmin ECHOMAP™ Ultra 2 166sv is a high-performance chartplotter built for anglers who want exceptional sonar clarity, advanced navigation tools, and maximum screen space. Its 16-inch Full HD display, GT56UHD-TM transducer, LiveScope™ compatibility, and Bluetooth® voice control create an advanced fishing system capable of handling virtually any marine environment.
With wireless networking, HDMI screen sharing, multi-band GPS, and Force® trolling motor integration, the ECHOMAP Ultra 2 166sv delivers a complete marine electronics solution for serious anglers. Whether fishing inland lakes, coastal waters, or offshore locations, this chartplotter provides the technology and performance needed to fish smarter and navigate with confidence.







