The Rolair 31003040CH aluminum flywheel is an original equipment component for Rolair’s K30-series two‑stage pumps, designed to fit PMP22K30CH and related K30 pump configurations. As a genuine OEM part (part number 31003040CH), it is documented in Rolair’s K30 pump catalogs and owner’s/parts lists. This aluminum flywheel is referenced in official Rolair manuals as the flywheel for K30 pump models, aligning with PMP22K30CH assemblies. Sold by authorized retailers under the same part number, the 31003040CH is marketed specifically for PMP22K30CH pumps.
