The upper ball socket K 34104 is a critical articulation component within the operating piston mechanism of the Sulzer ZV40/48 engine. Its main purpose is to provide a secure yet flexible connection between the piston and its associated linkage, allowing controlled angular movement while efficiently transmitting operating forces. Engineered from durable, high-strength materials with excellent resistance to wear and fatigue, the ball socket is designed to perform reliably under continuous vibration, cyclic loading, and demanding service conditions. Precision machining ensures accurate geometry, smooth movement, and proper load distribution throughout the assembly. By maintaining precise mechanical articulation and minimizing stress concentrations, the K 34104 upper ball socket enhances operational reliability, extends component service life, and supports the efficient performance of the operating piston system.