Shim carries Chicago Pneumatic part number C048412, which also shows up as 3310104766 and is stocked here under CP-C048412. It absorbs shock between two components of the pump, protecting the parts on either side of it from metal-to-metal contact.
The published breakdown lists it on the CP 0020 Sump Pump. Check it against the reference number on the diagram first; serial breaks change what fits.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Chicago Pneumatic tool range. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: C048412
- Also listed as: 3310104766
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-C048412
- Listed on breakdowns for: CP 0020 Sump Pump

