OEM Carburetor Kit / Zama RB-23Pack Size:1Zama RB-23NHC 203-5522, Oregon 49-887, Oregon 49-887-0Echo HC-1500, SV-4/B and Culti SV-4/B; Zama C1U-K17 and C1U-K27, A-D carburetors Not compatible with greater than 10% ethanol fuel