Do you need to get new fuel filter sealing rings (KT1871702) when replacing the fuel filter?

You should, otherwise you could end up with a leak.

The o-rings are compressed pretty hard and they form to the position they are in.
As soon as you lossen the banjo bolts, they will move and then not re-seat themselves as well.

Eeuro tapes them to the side of the box (if you order the fuel filter with them), yes you will need to replace them!

Off course if you have them, use them.... but I never changed them, and also never had any leaks...

welcome evo.

I have additional fuel filter outside the tank (euro setup) but I don't think change it.
(to many filters in the petrol stations, in the car fuel tank and the additional filter outside the tank).

ya i changed my fuel filter a month ago without new rings and i dont have any leaks ...

Yeah you can ...but is it worth the headache of possible leaks for less than a $1 of washers?