During the final‑assembly of a passenger‑car chassis, the fixing sleeve secures the mounting bracket of the power‑steering pump to the engine block. By acting as a precise, vibration‑resistant anchor, the sleeve holds the pump in the exact position required for the hydraulic circuit to function without leakage. Its design allows technicians to insert the bracket, tighten a single bolt, and achieve repeatable alignment, which is critical when dozens of identical units are built on a moving line. The component also serves as a quick‑release point for maintenance crews who need to replace the pump during warranty service; the sleeve can be disengaged without disturbing surrounding wiring or coolant lines. In automotive plant engineering, the same type of sleeve is employed on test rigs that simulate engine loads, where it fastens instrumentation brackets that must stay firmly in place under cyclic stresses. This straightforward fastening solution speeds up both production and service operations, letting the line clamp the pump in seconds and keeping the assembly flow uninterrupted.