This Champion R40A pump rebuild tune‑up kit is designed for the Champion R40A two‑stage air compressor pump, providing replacement components to refresh seals and gaskets during routine maintenance or a full overhaul. The kit is identified by the included part numbers Z657, Z9109, and Z10888, which correspond to components used in rebuilding R40A pumps. Z10888 is the complete gasket set for the R40 pump, enabling thorough resealing during a rebuild. Used for service on R40A pumps, this kit supports reconditioning the pump to maintain compression and extend pump life.
