Arrangement comprising a pump for a cooling circuit of a motor vehicle

An arrangement for at least one cooling circuit of a motor vehicle, the arrangement comprising:

• a housing having a first part and at least one second part;
• a tank and/or a distributor device;
• and a pump, the pump comprising:
• the at least one second part of the housing;
• a motor with a stator and a rotor, which are arranged in the housing of the pump;
• and a pump chamber that is provided in the housing and in which an impeller of the pump is arranged such that the impeller rotates and is driven by the motor, the impeller conveying a medium to be conveyed by the pump, wherein the first part of the housing is formed by a part of the tank or a part of the distributor device of the arrangement, such that a fully assembled state of the housing and pump is formed when the at least one second part of the housing of the pump is attached to the first part of the housing of the tank or the distributor device, wherein the first part of the housing is integral with the tank or the distributor device, such that the first part of the housing and the tank or the distributor device are monolithic, wherein an annular groove, in which a collar of the impeller of the pump engages, is provided in the first part of the housing, via which the impeller is supported in the housing, wherein recesses that are open toward the at least one second part of the housing are provided in the first part of the housing, and wherein projections that engage in the recesses are provided on the at least one second part of the housing.