The Official Online Store for Briggs & Stratton® Engines and Parts
Not sure where to start? You're in the right place. Whether your engine won’t start, has lost power, or is beyond repair, we’ll help you find the right replacement—quickly and confidently. Use the steps below to identify your engine, compare replacement options, and get expert help if you need it.
When replacing a Briggs & Stratton engine with another Briggs & Stratton engine, it is important to match the original engine’s model and type numbers to ensure compatibility. If you are replacing an engine with a different model, you will need to consider engine size, features, and application requirements to ensure proper performance and fit. Review the guidance below to help you choose the correct replacement engine.
Choosing the right engine depends on your equipment type, usage, and performance expectations. Selecting the correct engine ensures optimal performance, durability, and value.
Vanguard® (OHV overhead valve) engines. Designed for maximum performance and durability. These cast iron sleeved engines are ideal for continuous heavy-duty applications.
Professional Series™ / Commercial Series (Industrial/Commercial). Built with cast iron sleeves for extended life. Suitable for medium-duty commercial and industrial applications.
Intek™ and PowerBuilt™ engines. Aluminum cylinder bore OHV engines designed for general consumer use.
Standard engines. Aluminum cylinder bore, side valve engines for general-purpose residential applications.
When installing a replacement engine, it is important to match
the original engine’s configuration to ensure proper operation
and fit.
Key considerations include:
● Engine size and dimensions
● Starter type and position
● Fuel tank location
● Fuel line routing
● Muffler location and exhaust direction
● Accessories (deflectors, spark arresters, etc.)
Be sure to reinstall all guards, shields, and safety devices.
Replace any worn or damaged components during installation
To avoid mounting or performance issues, ensure the replacement engine matches the original specifications:
Crankshaft dimensions
A - Diameter
B - Height (distance from base to crankshaft centerline)
C - Length (distance from oil seal/cover mounting face to end of crankshaft)
Crankshaft type
A - Match keyway type (keyed, tapered, or threaded)
Mounting compatibility
A - Ensure the crankcase cover supports mounting accessories if required
Base mounting
A - Confirm mounting hole pattern and bolt spacing
For vertical shaft engines, proper alignment and fit are critical:
Crankshaft specifications
A - Starter grip position
B - Diameter
C - Keyway type
D - Length (from mounting face of sump—not oil seal—to end of crankshaft)
Base mounting dimensions
A - Match bolt pattern and spacing to ensure proper installation
Briggs & Stratton engines are not designed for and are not to be
used to power: fun-karts, go-karts, children’s vehicles,
recreational or sport all-terrain vehicles (ATVs), motorbikes,
hovercraft, aircraft products, or vehicles used in competitive
events not sanctioned by Briggs & Stratton.
For use with utility and side-by-side ATVs, please contact Briggs
& Stratton Engine Application Center at 1-866-927-3349.
Improper engine application may result in serious injury or
death.
How do I know if I need to replace my engine?
You may need to replace your engine if it no longer starts, has significant internal damage, produces excessive smoke, or requires repairs that exceed the value of the equipment. In many cases, replacing the engine is more cost-effective than purchasing new equipment.
How do I find my Briggs & Stratton engine model number?
Your engine model, type, and code numbers are typically stamped directly on the engine. Common locations include the valve cover, blower housing, or near the spark plug. These numbers are essential for finding a compatible replacement.
Can I replace my engine with a different brand?
While it is possible, it is strongly recommended to replace your engine with a Briggs & Stratton engine to ensure compatibility, proper fit, and reliable performance. Using a different brand may require modifications.
What is the difference between horizontal and vertical shaft engines?
Horizontal shaft engines are typically used in equipment like generators and pressure washers, while vertical shaft engines are commonly used in lawn mowers. The shaft orientation must match your equipment for proper operation.
Can I install a replacement engine myself?
If you have mechanical experience, you may be able to install a replacement engine yourself. However, if you are unsure, it is recommended to work with a certified technician to ensure proper installation and safety.
How do I make sure I choose the correct replacement engine?
To ensure the correct fit, match your current engine's:
• Model and type number
• Shaft size and orientation
• Mounting bolt pattern
• Application requirements
If you're unsure, submit the form above and our team will help you find the exact match.
To replace your engine, fill out the form below and an engine expert will contact you. For help with other replacement parts, use our contact form. If you are located outside the United States please find your nearest dealer in our Dealer Locator.
Click Here for help locating Model, Type or Serial Number.
Note: If you are located outside the United States please visit BriggsAndStratton.com to find your nearest dealer.
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