Garmin Transducer Extension Cable

This extension is designed for units using a 4-pin transducer connection. It is compatible with the Echo, echoMap CHIRP, and STRIKER series, including the GT-20 transducer. We recommend checking your specific unit's port configuration to confirm it uses the 4-pin interface before purchasing.

Because this is a genuine Garmin accessory, it is engineered to maintain signal integrity over the additional 10 feet. You should not experience any noticeable degradation in CHIRP sonar performance or data clarity when using this cable.

While it is physically possible to daisy-chain cables, it is generally discouraged. Adding multiple extensions increases the risk of signal interference and voltage drop, which can compromise the accuracy of your sonar readings.

Yes, this is a genuine marine-grade accessory built to withstand the harsh conditions of being on the water. The connectors and cabling are sealed to prevent corrosion and water intrusion, ensuring a reliable connection for your transducer.

The easiest way to verify is to disconnect your current transducer cable from the back of your fish finder and inspect the plug. A 4-pin connector will have four distinct metal pins arranged in a specific pattern; if your plug has a different number of pins or a different shape, this extension will not fit.