This is the Atlas Copco adaptor part number 3121055001, Crowder SKU AC-3121055001. It joins the hose to the machine. Connection hardware gets dragged, dropped, and cross-threaded, so it is a common replacement.
It is called out in the parts diagram for the BBD 94W 94WS 94WE Rock Drill. Compare it to the reference callout on the diagram to be sure it is the position you need.
If you need the parts around it, the parts diagram library has the full breakdown library, and the Atlas Copco catalog covers the machines themselves. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3121055001
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121055001
- Listed on breakdowns for: BBD 94W 94WS 94WE Rock Drill

