Air Filter replaces Tecumseh 35066 Part # 100-222 STE~100-222One New Aftermarket Replacement Air Filter for Tecumseh Small Engines This aftermarket replacement air filter replaces Tecumseh OEM part number 35066 and protects the carburetor and internal engine components by filtering dust, dirt, and debris from incoming air. It fits Tecumseh 3. 5 4 HP vertical shaft engines with 1972 and newer plastic air canisters, including the ECV, H, H30, H35, LAV50, LEV, LEV90, LEV100, LEV115, LV, OVRM, OVRM60, TC, TC300,