Champion ZM1906 Low Pressure Piston With Pin For R70A Pump

Champion ZM1906 Low Pressure Piston With Pin is a replacement piston kit for the low‑pressure side of Champion R70A pumps in the R‑Series line. The part is listed in Champion’s repair parts catalog as ZM1906 Piston Kit, Low Pressure with Pin, and it includes the piston and the pin needed for proper assembly. This component restores the piston’s sealing surface and piston‑to‑cylinder motion on the low‑pressure stage, supporting accurate displacement and compression during the intake/compression cycle. In the R70A parts lists, ZM1906 sits alongside other low‑pressure components such as Z9087 Ring Set (low‑pressure) and Z9108 Piston & Ring Kit, underscoring its role as a direct replacement part for routine maintenance and repairs on Champion R‑Series compressors. Typical applications include servicing Champion R70A pumps to maintain reliable air delivery and pump performance, ensuring smooth operation of the low‑pressure piston as part of the overall pump assembly.