These are complete repair spare parts for PCL‑200‑18B swing motor, perfectly compatible with Yuchai YC35‑6 / YC55 mini excavator slewing drive assembly. It covers core internal components for overhaul and maintenance of swing motor, including piston shoes, cylinder block, valve plate, retainer plate, thrust plate, seals and other wearing parts. Manufactured with high‑strength raw materials and precision machining, these replacement parts deliver stable hydraulic performance, reduce internal leakage and extend motor service life. Ideal solution for onsite repair, overhaul and component replacement of Yuchai 55 excavator swing system.