OEM Carburetor / Walbro WA-55-1Pack Size:1Walbro WA-55B, Walbro WA-55A, Walbro WA-55-1, Walbro WA-55Green Line 44112, J. Thomas WA-55, Oregon 50-600, Prime Line WWA-55-1, Rotary 11146Echo PB400 and PB400 E backpack blowers Not compatible with greater than 10% ethanol fuel