Bosch high-pressure fuel pump (HPFP) for the BMW N63 4.4L twin-turbo V8. It draws fuel from the low-pressure system and pressurizes it for direct injection; a common failure mode is a restricted or clogged fuel filter that forces the pump to work harder, eventually causing loss of power, hard starting, bucking/sputtering under load, or a complete no-start/stall. Genuine Bosch OEM-grade unit built to the same spec as the factory pump.

Fitment: BMW N63/N63TU 4.4L V8 models - F01/F02 750i/750Li (incl. xDrive, Alpina B7), F10/F07 550i, F12/F13 650i, E70 X5, E71 X6 (installation typically requires the correct adapter tool; confirm exact chassis at checkout).