Overview

The Garmin 010-12842-04 is a replacement microSD card door for ECHOMAP Ultra 12-inch chartplotters. It closes the memory card compartment so the card stays protected when the boat is running in spray or sitting at the dock.

If the original door is missing, cracked, or not closing firmly, the card slot can end up exposed to salt residue and grit. Replacing the door helps keep the microSD contacts cleaner and reduces the chance of accidental card ejection while underway.

Key features

• Replacement microSD card compartment door for Garmin ECHOMAP Ultra 12-inch units
• Covers the card slot to help limit exposure to spray, salt residue, and grime
• Helps keep a chart or data card seated by restoring the normal compartment closure
• No wiring or software steps; this is a mechanical cover part

Compatibility and fit

This part is intended for ECHOMAP Ultra models in the 12-inch size class that use a microSD card door. It is not a universal Garmin cover, so it is worth confirming your display size and card-compartment style before ordering.

Installation and setup

Access the card compartment, power the display off, and swap the door the same way the original is fitted so it closes fully and sits flush. On a tight flush-mount install, you may need to pull the display forward enough to comfortably reach the card area.

Use on board

This is a practical spare for boaters who move charts or data on microSD, or who open the compartment for updates and file transfers. It also makes sense on open helm stations where the display sees more washdown splash and airborne salt.

Maintenance and care

Rinse around the card area with fresh water after saltwater runs and wipe the surrounding bezel before opening the compartment. Avoid forcing the door closed if a card is not fully seated.