OEM Gasket And Diaphragm Kit / Walbro D20-WATPack Size:1Walbro D20-WATDealer Choice 33-1206, NHC 203-5258, Oregon 49-844, Prime Line WD20-WAT, Sunbelt WAL-D20-WAT, Tilton D20-WATWalbro WA and WT carburetors Not compatible with greater than 10% ethanol fuel