FM Antenna adapters work in conjunction with stock headunits and products designed to connect to the stock headunit via FM.
The 40-NI22 is a Factory Radio to Aftermarket Antenna Adapter for select 2007-Up Infinity/Nissan vehicles. The name of the adapter does not indicate that it is compatible with only that vehicle. It is important to follow the instructions of the FM Antenna Adapter compatibility chart, which can be found here
Nissan factory radio requirement: Installation of a compact disc player with FM modulator or other accessory requires adapter cable 40-NI12
with 40-NI22. Complete kit is 40-NI32