GARMIN GNC420 • $1,750 • FOR SALE • Garmin GNC420 for sale. unit is working and removed for an avionics upgrade. Unit comes with tray, backplate, connector. unit was repaired by Garmin Jan. 22, 2021. The screen was repaired June 2025 and new button contacts. Call Cory with any questions. 808-344-9392 • Contact Cory Hajek - AERO ADVENTURE WAREHOUSE LLC. , Owner - located Caldwell, ID 83605 United States • Telephone: 808-344-9392 • Posted July 31, 2025 • Show all Ads posted by this Advertiser • Recommend This Ad to a Friend • Email Advertiser • Save to Watchlist • Report This Ad • View Larger Images