OEM Carburetor Kit / Zama RB-61Pack Size:1Echo 125200-08563, Echo 12520008564, Zama RB-61J. Thomas RB-61, NHC 203-5532, Oregon 49-906, Rotary 12773Echo PB4600; Zama C1M-K37, A-D Not compatible with greater than 10% ethanol fuel