This is Chicago Pneumatic part number 1638135201 fan adapter (HUB), stocked at Crowder Supply as CP-1638135201. It joins the hose to the machine. Connection hardware gets dragged, dropped, and cross-threaded, so it is a common replacement.

The parts breakdown index is where to start if you are working back from a machine or send the model and serial and we will confirm it. Complete tools sit on the CP tool catalog. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.

• Part number: 1638135201
• Manufacturer: Chicago Pneumatic
• Crowder SKU: CP-1638135201