N2.2 series urea pump belongs to independent installation structure, which needs to be installed in the vehicle by bracket. The performance of this urea pump is similar to that of Bosch Denox2.2, which is mature and reliable. Its installation size, mechanical and electrical interfaces are the same as Denox2.2 urea pump, and the interface of electronic control system is compatible, so it can replace Denox2.2 urea pump.