One New Aftermarket Replacement Carburetor for Tecumseh H-Series Engines
This aftermarket replacement carburetor with gasket fits Tecumseh 4-cycle H-Series engines ranging from 3 HP to 4 HP. The carburetor meters air and fuel for the engine’s combustion cycle and is a direct-fit replacement for multiple Tecumseh OEM carburetor part numbers. Commonly used on snowblowers, lawn tractors, tillers (including Troy-Bilt Tuffy and Junior models), go-karts, mini bikes, chippers, shredders, and pressure washers. Includes mounting gasket. Not compatible with fuel containing greater than 10% ethanol (E10 max).
Specifications
- Engine Type: Tecumseh 4-cycle horizontal shaft
- Horsepower Range: 3 HP, 3.5 HP, 4 HP
- Includes: Carburetor with mounting gasket
- Maximum Ethanol Fuel: E10 (10%) — not compatible with higher ethanol blends
Compatible Models
Tecumseh H-Series Engines: H22, H25, H30, H35, H40, HT35
Fits Toro: 58007, 58015 (Tiller)
Also fits many Ariens, Jacobsen, Fits Craftsman, Sears, Troy-Bilt, and Fits Toro equipment powered by the above Tecumseh engine models.
Replaces Part Number(s):
631921, 631921-GASKET, 632284, 631070, 631070A, 631074, 631245, 631820, 632208, 632615, 632589, B1631245
Aftermarket Interchange Numbers
Fits Stens 520-918 (520918)
New aftermarket replacement part – not remanufactured, not used.






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