Automobile oil pump shell

The invention relates to the field of oil pumps, in particular to an automobile oil pump shell. The automobile oil pump shell comprises a lower shell, a damping supporting structure, an upper shell, apre-clamping structure and a positioning mounting structure, wherein the pre-clamping structure is connected to the attached side walls of the lower shell and the upper shell, and the pre-clamping structure comprises a pre-clamping sealing ring, an air inlet pipe, an exhaust pipe, a valve, an air bag and a clamping air bag; the side wall of the bottom of the lower shell is connected with the pre-clamping sealing ring, a volume cavity is formed in the pre-clamping sealing ring, the clamping air bag is arranged in the volume cavity, one end of the air inlet pipe communicates with an air bag inlet, and the other end of the air inlet pipe penetrates through the pre-clamping sealing ring and communicates with the clamping air bag. The automobile oil pump shell has the beneficial effects that through the pre-clamping s