You shouldn’t need it. Your antenna already does filtering.
But the filter should fit if the dongle fits.
Some SMA connections need some careful strongarming though.
You will need to reduce the gain though.
For Beginners - How to Set / Change Gain
Thoughts on optimizing gain - #2 by wiedehopf
If you want to make it easier, you can use automatic adjustment: Automatic gain optimization for dump1090 fa · wiedehopf/adsb-wiki Wiki · GitHub
No matter the method, start at a gain of 20.
You have two amplifiers in use which increase the signal significantly.