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Briggs & Stratton Engine Identification

How do I identify a B & S engine?

The Model, Type, and Code numbers, stamped directly into the engine, are used to identify our engines. Engines used in lawnmower applications usually have these numbers stamped directly into the blower housing, muffler heat shield, or a few inches above the spark plug. Depending on the style of engine shroud used, the engine numbers may be covered. It may be necessary to remove this shroud in order to locate the Model, Type, and Code.

Please view our "Find your engine Model, Type, and Code" Video:


Many horizontal shaft, overhead valve engines have these numbers stamped into the OHV rocker cover. However, on certain overhead valve powered generators, the equipment manufacturer installs a decorative chrome rocker cover
Chrome Rocker Cover
OVER our cover. If your engine has a decorative cover, it may be necessary to remove it in order to locate the Model, Type, and Code.

Please visit our Identify Your Model Number page for help in finding the engine’s numbers. For an explanation of our numbering system, please visit our Numerical Designation System page.

Also, be aware that the numbers found on the Engine Emissions Label
Engine Emissions Label
can be confused with the engine Model, Type, and Code. Unfortunately, these numbers cannot be used to identify your engine.

NOTE: Please read and abide by any applicable Safety Information (PDF) before performing any engine work. This information is not meant to take the place of work performed by a Briggs & Stratton Authorized Dealer. Terms and Conditions apply to all of our information provided on this website. Always be sure to read and understand your engine Operator's Manual.



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Please complete the form below to contact us with your question. Provide as much information as possible. We make every effort to personally answer all questions within 3 BUSINESS days. If you are in need of an immediate answer please review our frequently asked questions or contact a local service dealer.

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  • Enter any equipment model numbers you may have


  • Look for STAMPED B&S ENGINE NUMBERS


    STAMPED - YYMMDDxx Identifies Manufacture date




  • Series (3 digits) or Torque (ft. lbs)


  • Quantum, Intek, Classic, Sprint, etc.


    Manufacturer of the Tractor, Generator, Lawn mower, etc.


  • What kind of product is the engine coupled to?


    Where was the equipment purchased?


  • When product was purchased. Format: mm/dd/yyyy.

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  • Zip + 4 xxxxx-xxxx Canada use xxx xxx format




  • format: xxx-xxx-xxxx  




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