OEM Carburetor Kit / Zama RB-114Pack Size:1Zama RB-114J. Thomas RB-114, NHC 203-5565, Rotary 13420Stihl 4180 EMU trimmers and 4180 4 cycle trimmers; Zama C1Q-S72B; C1Q-S81; C1Q-S88 carburetors Not compatible with greater than 10% ethanol fuel