Abstract: A fuel injection pump for internal combustion engines, is proposed, with a distributor pump piston (6), which is supported in a housing bore (5) and on its jacket face, has a distributor groove (12), a filling groove (18), which is connected to a pressure relief chamber, and a pressure compensation surface (36). This filling groove constitutes a first leakage route (39) in the direction of the distributor groove (12) and constitutes a second leakage route (42) in the direction of an annular groove (20) in such a way that the pressure compensation surface, which is otherwise always closed by the inner wall of the bore (5), produces a high-pressure fuel supply by way of the first leakage route (39) in the direction of the pressure compensation surface (36) and this pressure compensation surface (36) is in turn relieved by way of the second leakage route (42) in the direction of the annular groove (20).