DESCRIPTION  For Walbro OEM Fuel Filter For Walbro 125-527-1 REPLACES OEM: (Please be sure of your OEM part number before purchase)  For Echo: 13120507320, 13120507321, 13120519830, 13120519832, 13120530830 For Walbro: 125-527, 125-527-1 SPECS:  Fits fuel line: 3/16" ID Ethanol: Not compatible with greater than 10% ethanol fuel For engines up to 30cc Felt filter