A high pressure fuel pump used for an internal combustion engine and a related method are provided. The fuel pump has a body having a top surface and a side surface. A damper housing is provided on the top surface. A damper cover is provided on the damper housing. A top engaging structure of the damper housing and a bottom engaging structure of the damper cover operatively engage each other to connect the damper cover to the damper housing in a sealed manner. The damper cover and the damper housing collectively define a space for accommodating one or more fluid pressure dampers. A fuel is introduced into the fuel pump through a fuel inlet fitting and processed by the fluid pressure dampers to increase the pressure of the fuel. The fuel of increased pressure is released through a fuel outlet fitting of the fuel pump.
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