So after a long time and a lot of searching I have found a Coupe that I’m going to buy! 
The seller has agreed to do a full service amongst other things and I requested getting a fuel filter fitted as I would normally do on a car every now and again.
However it doesn’t seem to be apparent where or if there is one?!
Can some illuminated Z4’ers shed some light please?

The seller has agreed to do a full service amongst other things and I requested getting a fuel filter fitted as I would normally do on a car every now and again.
However it doesn’t seem to be apparent where or if there is one?!
Can some illuminated Z4’ers shed some light please?