This is Atlas Copco part number 3371821709 back up ring, stocked at Crowder Supply as AC-3371821709. This ring holds its assembly in position under working load.
It is called out in the parts diagram for the BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker and MH55 55A HBP Hydraulic Paving Breaker, and on 3 other machines. Check it against the reference number on the diagram first; serial breaks change what fits.
Use the parts breakdown index to work through the rest of the assembly, or the Atlas Copco catalog if you are pricing a replacement machine. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3371821709
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371821709
- Listed on breakdowns for: BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker, MH55 55A HBP Hydraulic Paving Breaker, LH220 220HBP 230E 230E HPB Hydraulic Paving Breaker, LH270 270HBP 280E 280E HBP Hydraulic Paving Breaker, BRK 70 70VR 70HBP 70 VR HBP Hydraulic Paving Breaker
