Ordering by number: this is 9753213330, the Atlas Copco RELIEF VALVE EXT HANDLE. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the tool.

If you are working from a machine rather than a part number, start at the parts diagram hub, or send us the model and serial and we will match it. Machines themselves are on the Atlas Copco catalog. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 9753213330
• Manufacturer: Atlas Copco
• Crowder SKU: AC-9753213330