![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](https://cdn11.bigcommerce.com/s-63xlaibgqt/images/stencil/600x600/products/17406/22851/115772XL__40627.1788570200.jpg?c=1 "Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]")
Product Overview
GMI™ 20 to GMI 40 Adapter Plate
This adapter plate allows you to install a new GMI 40 marine instrument into the existing cutout of a GMI 20 in your dash.
![Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]](https://cdn11.bigcommerce.com/s-63xlaibgqt/images/stencil/1280x1280/products/17406/22851/115772XL__40627.1788570200.jpg?c=1 "Garmin GMI 20 to GMI 40 Adapter Plate [010-12993-20]")
GMI™ 20 to GMI 40 Adapter Plate
This adapter plate allows you to install a new GMI 40 marine instrument into the existing cutout of a GMI 20 in your dash.