奥迪Q7副燃油泵228236005，燃油系统高效补充件。

Secondary fuel pump directly replaces Audi Q7 OEM numbers 228236005 or 7L6919087G; universal compatibility; designed specifically for the secondary pump position. Its core function is to assist the primary pump by delivering fuel from the right side of the tank, ensuring stable fuel system pressure, especially under wide-open throttle or low fuel. Fits Audi Q7; after installation can resolve acceleration weakness, startup difficulty, or rough running. If you experience engine stalling when fuel drops below a quarter tank or hear unusual tank noises, the secondary pump is likely aging and needs replacement to restore smooth operation.