Impeller – D40N is the Chicago Pneumatic service part carried under part number 470W243236. It is part of the fluid end of the machine, where wear tracks with the abrasiveness of what is being moved rather than with hours alone.

Give us the model and serial off your machine and we will confirm the fit; the full diagram library and the CP tool catalog are the other two places to start. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.

• Part number: 470W243236
• Manufacturer: Chicago Pneumatic
• Crowder SKU: CP-470W243236