Hex Autoparts Carb Carburetor for Zama Echo C1U-K52 SRM2100 SRM2110 GT2000 GT2100 Series Fits: ECHO SRM2100, GT2000, GT2100 SERIES Trimmers Brand new aftermarket product not remanufactured Built to strict quality control standards ZAMA #C1U-K52 Echo Part #:12520013312,12520013313