Ordering by number: this is 9232220421, the Atlas Copco engine piston assy. The piston is the striking mass of the breaker; 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 Cobra Combi Gas Breaker/Drilll- before 2010. 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 Atlas Copco lineup. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 9232220421
- Manufacturer: Atlas Copco
- Crowder SKU: AC-9232220421
- Listed on breakdowns for: Cobra Combi Gas Breaker/Drilll- before 2010
