Ceramic plunger with at least one control element

A plunger (50) for axial movement and rotation within a pump barrel (71) of a fuel pump (100) comprises a substantially cylindrically shaped plunger shaft (51) made of a ceramic material, and at least one control element (54) for controlling a rotational angle of the plunger (50). The at least one control element (54) is attached to the plunger shaft (51).