Garmin Echomap Plus 43CV With GT20 Transducer

Brand: Garmin | Series: Echomap Series | Model: 43CV | Our Score: 4.7/5

The Garmin ECHOMAP Plus 43cv is a popular, most affordable, and reliable fishfinder and chartplotter combo for anglers and boaters, offering CHIRP sonar and preloaded maps for both freshwater and saltwater use.

Garmin ECHOMAP Plus 43cv, weighing 1.6 pounds, features a 4.3-inch LCD display with a sunlight-readable combo and a GT20 transducer, making it lightweight and ideal for avid anglers and boaters.

The ECHOMAP Plus 43cv boasts built-in sonar capabilities, including the CHIRP traditional sonar, a sophisticated technology for the fishing and boating public.

In this article, we can see the key features, including ClearVü scanning sonar, detailed maps, and connectivity options, making it a top choice for enhancing water activities.

Garmin Echomap Plus 43CV With GT20 Transducer_
Garmin ECHOMAP Plus 43cv, 4.3-inch Sunlight-readable Combo, Includes GT20 Transducer, with U.S. Lakevu G3 Maps and Clearvu and Traditional Chirp Sonar

Specs of ECHOMAP™ Plus 43CV with GT20 Transducer

Dimension4.0″ x 6.5″ x 3.1″ (10.2 x 16.5 x 7.9 cm)
Weight1.6 lbs (0.7 kg)
Display TypeQVGA, NP
Display Size2.1″ x 3.7″; 4.3″ diagonal (5.4 x 9.5 cm; 10.5 cm diagonal)
Display Resolution480 x 272 pixels
Mounting OptionsBail or flush
Accepts Data Cards1 microSD card; 32 GB maximum card size
Track Points50,000
Tracks50 saved tracks
Navigation Routes100
Has Built-In ReceiverYes
Receiver5 Hz
NMEA 2000 CompatibleYes
Nmea 0183 CompatibleYes
Supports WAASYes
Lakevu (Inland)Yes
Tide TablesYes
Bluechart G3Yes
Bluechart G3 VisionYes
Lakevü G3Yes
Lakevü G3 UltraYes
Topo 100kYes
Standard MappingYes
Garmin QuickDraw ContoursYes
ActiveCaptain® Compatibleno
Power Input9 to 18 Vdc
Typical Current Draw At 12 VDC0.5 A
Maximum Current Draw At 12 VDC2.0 A
Maximum Power Usage At 10 VDC5W
Displays SonarYes
Power Output500 W
Traditional Sonar (Dual Frequency/Beam)built-in (single channel CHIRP, 70/83/200 kHz, L, M, H CHIRP)
Clearvübuilt-in 260/455/800 kHz
NMEA 2000® Ports0
Connections NMEA 0183 Input Ports1
4-Pin Transducer PortsYes

Features of ECHOMAP™ Plus 43CV with GT20 Transducer


We start with a compact and robust navigation device, designed for a range of environments.

It’s a gadget that blends size efficiency with durability, measuring 4.0″ x 6.5″ x 3.1″ and weighing only 1.6 lbs. Its IPX7 waterproof rating reinforces its reliability, making it a trustworthy companion in diverse conditions.

Display and User Interface

The heart of its interface is the 2.1″ x 3.7″ QVGA display, sporting a 4.3″ diagonal size. 

With a resolution of 480 x 272 pixels, the screen offers clarity and energy efficiency. User interaction is streamlined through a keyed input system, and installation is versatile, thanks to bail and flush mounting options.

Storage and Navigational Capacity

Its storage capabilities are impressive. Supporting a microSD card up to 32 GB, the device holds up to 5000 waypoints, 50,000 track points, and 50 saved tracks. The ability to manage up to 100 navigation routes makes it a powerhouse for planning and tracking, making it suitable for extensive journeys.

GPS Functionality and Mapping

The device shines with its GPS and 5 Hz receiver, ensuring pinpoint accuracy. Compatibility with NMEA 2000, NMEA 0183, and WAAS support enhances this precision. Ready-to-use inland LakeVu maps and tide tables add immediate value for navigators.

Expanded Mapping Capabilities

Adaptability is key, and the device offers it with support for a range of maps like BlueChart G3 and LakeVü G3. This allows users to customize their navigation experience to suit diverse activities, from sailing to trekking.

Energy Efficiency and Power

Efficient power usage is a standout feature. Operating within 9 to 18 Vdc, its low power draw (0.5 A at 12 VDC, max 2.0 A) and maximum power usage of 5W at 10 VDC, ensure sustained performance without excessive energy consumption.

Sonar Technology

For underwater exploration, the device’s 500 W sonar capabilities, including traditional sonar and ClearVü, are impressive. It’s equipped to provide detailed images below the surface, making it perfect for fishing and marine exploration.

Connectivity Options

The device includes one NMEA0183 input port and a 4-pin transducer port, facilitating seamless integration with various external devices and sensors. While it lacks NMEA 2000® ports, these connections still offer substantial utility.

What’s in the box?


  • Intuitive interface and solid design.
  • Easy installation and setup.
  • Clear and easy-to-read display.
  • Good-quality maps for popular waters.
  • Compact size suitable for small boats.
  • Affordable pricing, particularly during sales.


  • Occasional technical issues like screen freezing and button malfunctions.
  • Some units may have defective transducers requiring replacement.
  • Limited map details for less popular waters.

FAQs on Garmin Echomap Plus 43CV

The ECHOMAP™ Plus 43cv offers the advantage of integrated maps, which are not available on the Striker 4. The screen size is slightly larger, providing better visibility and functionality. Users also appreciate the ability to map uncharted lakes and create personalized fishing maps.
Yes, users can use CHIRP and ClearVu simultaneously on the ECHOMAP™ Plus 43cv. Many prefer to use them in a split-screen mode for better analysis and comparison of underwater structures and fish. CHIRP is effective for showing structure and fish, while ClearVu offers a detailed view of the bottom and can distinguish between different types of underwater features.
The ECHOMAP™ Plus 43cv is quite suitable for kayak fishing. It offers a compact design that fits well in the limited space of a kayak. The screen size, though small, provides adequate visibility for CHIRP and ClearVu in split-screen mode. It’s easy to install and offers essential features like waypoint marking and contour mapping, which are beneficial for kayak fishing.
Yes, the ECHOMAP™ Plus 43cv is user-friendly and suitable for beginners. It has basic, easy-to-navigate functions and is effective for locating structures and fish. Users can set waypoints to mark spots and navigate back to them, making it a good choice for those new to sonar units.
The 5cv model offers a higher screen resolution of 480×800 pixels compared to the 272×480 pixels of the 4cv model. This results in sharper and clearer images, making it a worthwhile upgrade, especially for those who need detailed views for fishing.


The Garmin ECHOMAP Plus 43cv with GT20 Transducer is a lightweight fishfinder and chartplotter combo, perfect for anglers and boaters. It features a 4.3-inch LCD display, CHIRP traditional sonar, and ClearVü scanning sonar for detailed underwater images. It includes preloaded maps for freshwater and saltwater use, a 5 Hz GPS receiver, and a waterproof rating of IPX7. With a storage capacity of up to 5000 waypoints, it’s easy to install and operate.

Gary Burrell

Chief Content Writer and Reviewer at at Garmin Fish

Born in 1989, Gary Burrell is an Electrical Engineering graduate from the University of Tennessee. With 20+ years of experience, he has transitioned from engineering roles to becoming the Chief Content Editor. Gary’s unique blend of technical knowledge and editorial expertise has made him an essential figure in content creation, ensuring clarity and accuracy. His journey from an engineer to an editor showcases his adaptability and commitment to continuous learning.