Ordering by number: this is 3121015980, the Atlas Copco piston – complete. The piston is the striking mass of the pusher leg; its condition sets impact energy, so scoring, mushrooming, or lost diameter shows up directly as reduced production.

It shows up in the parts breakdown for the BBC 16W WS Pusher Leg Drill. That machine is the Atlas Copco BBC 16W Pneumatic Rock Drill if you are pricing a replacement rather than a repair. Compare it to the reference callout on the diagram to be sure it is the position you need.

Need the parts around it? They are on the same breakdown, and the full diagram library covers every machine we publish. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.

• Part number: 3121015980
• Manufacturer: Atlas Copco
• Crowder SKU: AC-3121015980
• Listed on breakdowns for: BBC 16W WS Pusher Leg Drill