Part Identification and Parts Website

That's the pressure hose, I don't know if there is a website that offers oem parts like that, someone may have a nos one, but I'm not sure where to look. I typically use Rock Auto for a lot of the replacement parts I need. If there is a hydraulic hose repair shop in your area they can often make a new one for a reasonable price in my experience.
As a side note, it is most helpful to include the year, make, model, engine size etc when asking for help with something.
Good luck with your repair.