Its the one thats closer to the outside of the car. Number 3 in that pic. The one without the balloon looking thing in line.
Although I can’t get the fitting off that connects number 3 to number 1. Probably because the pipe is so badly corroded. If I force it, it will likely come off. But I don’t want to break it and have no fuel line lol.
Renault want over £300 for number 1 and 3.
Asking around to see if some custom braided line makers can do it.