Muffler carries Chicago Pneumatic part number R278118 and is stocked here under CP-R278118. Exhaust treatment on a rock drill is a hearing-protection item as much as a comfort one, and elements load up with oil and dust over time.
The published breakdown lists it on the CP 9RR 9RRS Rock Drill.
Use the full diagram library to work through the rest of the assembly, or the Chicago Pneumatic lineup if you are pricing a replacement machine. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: R278118
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-R278118
- Listed on breakdowns for: CP 9RR 9RRS Rock Drill

