Carburetor Rebuild Kit Gasket for Echo GT1100 GT2100 GT2103 HC1000 PB1000 PB1010 SRM1400 SRM2300 HC1500 replaces Zama RB-21 High quality aftermarket carburetor rebuild kit gasket diaphragm Replace P/N: Zama RB-21 , Echo 12530042030, John Deere AM104875 3 months warranty