Which car seats are compatible with the G5 System Adapter? September 27, 2022 15:38 Updated Our G5 System Adapter is compatible with Maxi-Cosi, Cybex, BeSafe, and Nuna car seats. Related articles How do I know if my current Orbit Baby product(s) are compatible with older or newer Orbit Baby products? Can I use the G5 System Adapter without a Stroller? Can the Orbit Baby Toddler Car Seat be used on airplanes? Where do I purchase a replacement part for my discontinued Orbit Baby (G1,G2, O2, G3)? Newborn Insert Instructions