HIPA 308054010 Carburetor with Primer Bulb Mounting Gasket for Ryobi RY08578 RY08552 RY09905 Backpack Bower Replacement manufacturer part number: 308054010 Fits Ryobi RY08578 RY08552 RY09905 Backpack Bower Package include: 1pc carburetor, 2pcs primer bulb, 2pcs mounting gasket