High-pressure injection system

A high-pressure injection system for internal combustion engines, comprising:

• a high-pressure pump having a plunger cylinder, the plunger cylinder having a delivery chamber and a high-pressure sealing surface on an outlet side;
• a port element arranged on the outlet side of the plunger cylinder and having a first end face and a second end face, the port element having an outlet port flow-connected to the delivery chamber and an outlet valve, the first end face of the port element facing the plunger cylinder;
• and
• a high-pressure line element arranged on an outlet side of the port element,
• wherein:
• the high-pressure line element comprises a high-pressure sealing surface, the high-pressure line element bears against the second end face of the port element;
• the port element is clamped between the plunger cylinder and the high-pressure line element;
• and
• the first and second end faces of the port element each comprise a high-pressure sealing surface.