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Pipe comes from fuel pump and goes to here (focused pipe):
Does anybody knows how this pipes is called so I can order it online? Or maybe there is any other way to fix that broken pipe without replacing it? I tried to fix it with duct tape lol but it didn't help.
That is the high pressure pump. You have a feed line that comes from the fuel filter to that pump, and there is a line that comes off of the pump and goes to the fuel rail. Mine got old and hard and broke.
Instead of buying replacements from MB, just take a piece to any auto parts store and get fuel line that fits that inside diameter. I would replace all of those hoses while you are doing it. I did that to mine over a year ago and it has held up fine.
You can also remove the primer/pressure pump thing that "T's" in by the fuel rail. Usually they go bad and do not really work anyway. I removed mine and have had zero issues.