Specs: Carburetor, Verify OEM part number by referring to engine model and spec - does not fit all applications, Ethanol: Not compatible with greater than 10% ethanol fuel, Made By: An OEM Supplier Replaces OEM Numbers: Toro: 121-0373 Compatible With/Replacement For: Toro: 20372, 20373, 20374, 20380, 20381, 20383 and 20384 Recycler and Super Recycler mowers Stens branded parts are trusted by professional dealers to perform OEM quality repairs. The Stens name is featured on all Genuine Stens product packaging.