OEM Carburetor Kit / Walbro K20-WYLPack Size:1Walbro K20-WYLJ. Thomas T-63, NHC 203-5573, Prime Line WK20-WYL, Sunbelt WAL-K20-WYL, Tilton K20-WYLWalbro WYL carburetors Not compatible with greater than 10% ethanol fuel