Where would this be located, could not find it in the system.
Anyone has the p/n handy ?

 

Have you tried looking it up on RealOEM.com - Select Your BMW Model?

 

Could not find it, maybe I'm missing something.
Is it supposed to be on driver's side underbody area?

Updating after further check, is it inside the tank ??
https://www.realoem.com/bmw/enUS/sho...diagId=16_0554

If that is the case it appears complicated and not really clear if it is required to replace.

 

The fuel filter is not a separate part like days of old. It is integrated into that part showing as #1 in the diagram. Unless you are in the fuel tank for some reason or have a reason to believe you need a new filter, I'd leave it alone.

 

It's not under the car, it's under the backseat.
It's been a while since I did this but I seem to recall "unscrewing" the metal ring about a quarter turn, lifting up the existing filter, disconnecting a couple hoses, removing it, then reconnecting the hoses to the new unit and dropping it bank into the tank , then securing the metal ring with a quarter turn to seal in place. It's important that you get a good seal with the rubber ring/gasket to ensure no leaking.