Champion P05050A Rebuild Kit

Champion P05050A Rebuild Kit is a maintenance kit designed to rebuild Champion R-series pump assemblies, covering models R10, R10C, R10D, R15, R15A, and R15B, so technicians can service older Champion air compressors without replacing the whole unit. The kit lists included components by part numbers OSN4, Z764, Z799, and P05050A, confirming it is a targeted set of rebuild parts rather than generic components. In Champion manuals, Z799 and P05050A are identified as elements in the low-pressure piston kit used on R10D and R15B configurations, indicating the kit includes piston/seal components critical to restoring compressor performance. Replacement kits are described as options to rebuild existing pump assemblies in lieu of a full compressor replacement, aligning with Champion’s service/maintenance guidance.