Fuel Pump

A fuel pump for a fuel injection system of an internal combustion engine includes a pump housing and a fastening section which is present on the pump housing for fastening the fuel pump to a base, in particular an engine block. The fastening section has a through opening for receiving a holding element for a fastening means, in particular a screw. At least one radially inwardly directed projection is present at least in an end region of the through opening, the end region facing the base in the installed position.