A high-pressure pump has at least one pump element, with a pump
piston which is guided displaceably in a cylinder bore of a housing part of the high-pressure pump and is driven in a
reciprocating motion and defines a pump work chamber in the cylinder bore, into which chamber fuel is aspirated via an
inlet valve in the intake
stroke of the pump
piston. The
inlet valve has a pistonlike valve member, which with a sealing face cooperates with a
valve seat for controlling the communication of the pump work chamber with the fuel inlet. The valve member is disposed with a head, on which the sealing face is embodied, in the pump work chamber and protrudes out of the pump work chamber with a shaft adjoining the head. The
valve seat is formed in the housing part at a transition from the cylinder bore to a bore of smaller
diameter adjoining the cylinder bore. With its shaft, the valve member protrudes through the bore into a region of the housing part remote from the pump work chamber, in which region a closing spring is disposed that engages the shaft of the valve member.