Fuel pipe diameter

[sibok]

Hi,

I would like to surpess a fuel pressure regulator installed on my '99 16v Saxo to restore the genuine one.

The thing is the fuel pipe installed has not the same genuine fuel pipe diameter.

Do you know which diameter is the genuine fuel pipe?

I'm from Spain and i'm looking into this [1] web site and i see there is a wide range diameter variety. So i'm a bit lost.

Thanks :)

[1] https://www.oscaro.es/tubo-flexible-de-combustible-609-gu#/?vid=11096&vident=aj7BXbuTmf7oCw2%2BeBBd9zoba2z0He6sdMLbAq0Ws IkH6B
%2FSVvpKPS%2F8ve%2BfUCGZq