This is Tamco/Toku part number 430301E50 piston, stocked at Crowder Supply as TK-430301E50. The piston is the striking mass of the tool; its condition sets impact energy, so scoring, mushrooming, or lost diameter shows up directly as reduced production.

Give us the model and serial off your machine and we will confirm the fit; the parts diagram library and the Tamco/Toku lineup are the other two places to start. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 430301E50
• Manufacturer: Tamco/Toku
• Crowder SKU: TK-430301E50