Signswise Rb-k106 Rbk106 Zama Carburetor for Echo Pb-250 Pb-250ln Es-250 A021003660 Trimmer Carb OEM Zama Carburetor A021003660 Es250 Pb250 Brand New, well packed. High Quality Replacement Parts High quality replacement carburetor for Fits ECHO ES-250 PB-250 PB-250LN blower Replacement manufacturer part number: RB-K106, A021003660, A021003661 Package include: 1 carburetor, Make sure your carburetor matches before placing an order