Pre-chamber spark plug with orientated openings

A prechamber spark plug for an internal combustion engine, comprising:

• a body with an external thread at its front end for screwing the prechamber spark plug into the internal combustion engine;
• the external thread has a center line and begins with a thread start at the front end;
• the body has a passage in which an insulator is fastened and a center electrode protrudes from the front end of the insulator;
• at the front end of the body, a prechamber-forming cap is provided which delimits a prechamber and shields the center electrode from a combustion chamber of the internal combustion engine after the prechamber spark plug has been installed in the internal combustion engine;
• the cap has at least one opening, which is oriented obliquely to the center line of the external thread and permits a gas exchange between the prechamber and the space outside the prechamber, wherein the opening has a predefined orientation in relation to the thread start.