Hilitchi Carb Carburetor for Zama C1U-K52/C1U-K47 Carb Fits Echo GT2000 GT2100 SRM2100 12520013312 100% Brand New and High Quality! Echo Carburetor Zama C1U-K52 Replaces C1U-K47 Fits Echo Models: GT2000 GT2100 PAS2000 PAS2100 PAS2110 SHC1700 SHC2100 SRM2100 SRM2110 Echo Part Numbers 12520013312 125200133313 1252001331412520013311 12520049030 12520046831 Please be sure your carb matches the Zama models above to ensure this is the correct replacement