Garmin GNX 375 GPS/Transponder

Description

The Garmin GNX 375 GPS/Transponder is an integrated avionics unit that combines position reporting and aircraft identification into a single panel-mount system. Built for general aviation aircraft seeking modern navigation and compliance with airspace transponder requirements, this unit merges Garmin’s GPS technology with a Mode C or Mode S transponder function, reducing panel real estate while maintaining redundancy through a self-contained design.

Pilots installing the GNX 375 should verify current compatibility with their aircraft type and existing avionics suite, as integration with autopilot, glass panels, or legacy systems varies by installation. This unit is well-suited for owners upgrading from separate legacy GPS and transponder boxes, though installation typically requires professional avionics shop support to ensure proper antenna placement, power distribution, and certification signoff. Check with your avionics shop or Garmin for specific STC and hardware requirements for your aircraft model.