SKU: CW70806
UPC: 753759197810
MPN: 010-12721-00
The Garmin 4-Pin Transducer to 8-Pin Sonar Port adapter is an essential connectivity solution for anglers and boaters upgrading or integrating legacy transducers with newer Garmin chartplotters and sonar systems. If you're running proven 4-pin transducer hardware but your vessel's sonar port uses the modern 8-pin configuration, this adapter bridges that gap without replacing expensive equipment. It's a cost-effective alternative to buying new transducers outright.
This adapter cable (Garmin MPN 010-12721-00) enables direct compatibility between older 4-pin transducer connectors and 8-pin sonar ports found on current-generation Garmin marine electronics. The compact design—measuring just 4 x 1 x 5 inches and weighing only 0.1 lbs—installs cleanly without bulk or cable clutter. The connector mapping preserves signal integrity, allowing your transducer to deliver full sonar performance, including live bathymetry, fish arches, and bottom hardness data, just as the manufacturer intended.
Serious anglers and recreational boaters benefit most from this solution when retrofitting or consolidating marine systems across multiple vessels. Installation is straightforward: connect the 4-pin transducer cable to one end and plug the 8-pin connector into your compatible Garmin sonar port. Confirm your chartplotter or fishfinder model supports 8-pin sonar input before ordering. This adapter is ideal for anyone looking to extend the life of proven transducer hardware while staying compatible with the latest Garmin technology.
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