XCMG XS163J Compactor Steering Cylinder – PN 803081720 / XGYG04-007B | OEM Piston Cylinder

The XCMG PN 803081720​ (model XGYG04-007B) is a steering cylinder (piston type)​ for XCMG road rollers​ — public-channel parts data lists it as a spare for the XS163J compactor. It is an actuator in the steering hydraulic circuit, converting hydraulic pressure into linear motion to steer the machine. Key points: (1) the XGYG04 steering-cylinder family is densely numbered​ — e.g. the XS203H roller uses steering cylinder 803081717, another roller model uses 803081721; a one-character difference in suffix or serial usually means a different machine or mounting position, so always verify the exact PN against the machine BOM before quoting; (2) steering cylinders are steering-system components​ — if replacement is needed, pay attention to seal-kit compatibility and source the corresponding repair seal kit separately (wiper rings, step seals, glyd rings, O-rings, etc.); (3) before mounting, inspect the rod chrome for scoring and the port caps for sealing, and torque the bolts diagonally and evenly; (4) as a hydraulic actuator, oil cleanliness directly affects service life​ — keep hydraulic oil clean and replace filters on schedule.