OEM Carburetor Kit / Zama RB-44Pack Size:1Zama RB-44J. Thomas RB-44, J. Thomas RB-375, NHC 203-5865, Oregon 49-903, Sunbelt RB-44, Sunbelt B1RB44, Tilton ZRB44Echo PB4600 and PB6000 blowers; Zama C1M-K24, A-B; C1M-K25, A-B; C1M-K49, A-C; C1M-K76 carburetors Not compatible with greater than 10% ethanol fuel