Carburetor for Echo GT-225 PAS-225 PE-225 SHC-225 SRM-225 Replaces RB-K93 Replaces Zama RBK93 Replace Echo Part Number:A021001690 A021001691 Fits Echo GT-225 PAS-225 PE-225 SHC-225 SRM-225 SRM-225i Please use your model and serial numbers were insuring correct fit