Yes, I installed it (NEMA 2000 Gateway Assembly) on our Cummins QSD several years ago. In addition to fuel consumption display/data the Garmin MFD will also import and display all your engine gauges. Comes in through the NEMA 2000 backbone. Very easy install. Remove starboard side panel in berth, behind helm station, to access wiring bundles and NEMA backbone in electrical compartment behind helm. I find using the Garmin fuel usage to be fairly accurate as opposed to my fuel tank sending unit which is one of the magic ones - it manufactures fuel over time. :lol:
Plus I am kind of old school from my flying days. Still use pencil and notebook for fuel consumption and gallons remaining.
Hope this answers what you are looking for.
Mike Guthrie