Fuel Pressure Regulating Valve, Bosch - E90 335d, E70 X5 35d, M57 BOSCH
This part is listed by BMW as BMW part number (13 53 7 805 734) and is described as the fuel pressure regulating valve located on the fuel rail on E90 335d and E70 X5 35d.
This is an OEM M57 fuel pressure regulator manufactured by Bosch - the original supplier to BMW for this part, as well as many other engine components. As the OEM it meets all of BMW's original design, fitment, and performance requirements and is TUV approved. OEM parts are the best alternative to more expensive Original BMW parts because they are virtually identical without the inflated price tag