Fuel pump Lupo 1.0 ALL defective!

Good morning and to all fathers a nice father’s day, my problem is that my tanker has broken last. I had a gas odour in the car for a long time and found out that it is due to the high pressure line on the tanker. Now I wanted to remove it from the tanker to see if the seal is defective. How else is it, the plastic on the tanker where the high pressure line is on it is broken. Now I need a new tanker.. Which one can buy there? Used or rather new? And I even found some with 3 or 4 bar, what is the difference? MfG NoNstore