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Outdoor power equipment relies heavily on its engine. When your existing engine fails or you're building custom equipment, selecting the right replacement is crucial for performance and longevity. A well-chosen engine ensures your tools operate efficiently, reliably, and safely for years to come.
570cc Displacement: Balances power and efficiency effectively.
Advanced Debris Management
Dura-Bore Cast Iron Cylinder Sleeve
Full Pressure Lubrication w/ Spin-On Oil Filter
Replacement engines are very specific to your current model number. Please contact us or the manufacturer for the correct replacement for your original engine.
EPA compliant: Which means it meets all stringent environmental standards, ensuring reduced emissions and a cleaner running engine.
Briggs & Stratton uses Gross Torque (GT) to measure power on smaller engines and Gross Horsepower (GHP) for larger engines.
Engineered for Excellence - The shaft boasts a 3/4" diameter, extending 2-3/8" in length. The end is thoughtfully tapped with 5/16"-24 UNF threads, while a 3/16" keyway enhances precision. The mounting pattern spans 6.40" in length and 2.95" to 3.17" in...
Unleash Potent Energy - Compliant with EPA standards, it commands a maximum torque of 8.1 ft.-lb @2500 RPM, racing to a maximum speed of 3600 RPM. Harness the strength of 7 horsepower, all fueled by a substantial 0.9-gallon tank.
Versatile Replacement - Embrace the versatility of our engine as it seamlessly replaces 6/6.5/7/7.5 hp engines from renowned brands like Honda, Yamaha, Kohler, and Briggs & Stratton. Its application extends across cement mixers, compressors, log...
Industrial Powerhouse - Our engine provides unwavering strength to tackle any task. Fuel Shut Off and gas-saving overhead valves maximize efficiency. The easy-reach recoil starter system features auto-decompression, ensuring effortless starts.
Reliable - Rest assured that our engine is 100% new. As part of our quality assurance, it's oil tested before packaging, which is why it might have a slight oily touch. Please note, however, that engine oil is not included.
【Powerful & Durable 15HP 4 Stroke Gas Engine】This 15HP 420cc 4 stroke gas engine delivers stable 9700W output with 3600rpm max speed, perfect for heavy‑duty farm and industrial use. Made of high‑grade aluminum and iron, it features impact...
【Efficient & Fuel Saving Air Cooled Engine】Built with forced air cooling system and heat dissipation holes, this air cooled 4 stroke engine keeps stable running under long hours work. Equipped with high precision carburetor, it lowers fuel consumption...
【Reliable Pull Start with Low Oil Alarm】Designed with ergonomic pull start system for easy starting, this gasoline engine comes with low oil alarm to prevent sudden shutdown and protect motor. The sealed oil port effectively avoids oil leakage, and...
【Smooth & Quiet Running Performance】This 420cc horizontal shaft gas engine is equipped with premium muffler to lower working noise, providing quiet and comfortable operation environment. Manual low oil warning, pressure splash lubrication and stable...
【Wide Application & Easy Installation】This 15HP 4 stroke gas engine fits most general‑purpose equipment including generator, water pump, vibrator, thresher, minibike and garden machine. Complete accessories and detailed English manual allow easy...
POWERFUL ENGINE - Our 420cc displacement 4-stroke horizontal cylinder gas engine has a max torque of 18.45ft.lbs @2500RPM, max 3800 RPM speed, 15 maximum horsepower, 1.2 gal fuel tank. Built to meet & exceed industrial grade quality standards & provide...
SHAFT SPECS - 1 in Diameter, 3.48 in Length, end tapped with 3/8 in.-24 UNF; Keyway 1/4 in; Mounting pattern 7.72" L x 3.39" W-4.06" W. Durable design runs quiy and provides smooth operation.This engine spark plug system can take Torch: F6TC spark plugs...
SAFETY & WIDELY APPLICATIONS - Built-in Force Air-Cooled and Splash Lubrication System, keeping the motor cool during extended use of time and ensure the operator's safety. A low oil shutoff functionality turns the engine off to prevent serious damage or...
GREAT REPLACEMENT - Our 420cc 15HP Horizontal Engine is a great replacement for your Honda GX340, 389cc, GX390, 389cc, Briggs & Stratton GX340, 389cc, GX390, 389cc, Kohler CH440, 429cc, ECH440, 429cc, ECH440LE, 429cc, Yamaha MZ360, 357cc, MX360, 358cc...
KINDLY NOTED- with EPA compliant, each gas engine will be Oil Tested before packaging, so it may touch a little oily, but 100% new condition.
Shaft 3/4" diameter, 2-3/8" long, end tapped with 5/16"- 24 UNF; Keyway 3/16"
Small gas engine motor wibuilt-in 4 stroke, air cooled with recoil start
7HP 3600RPM, OHV gasoline engine, 0.9 gallon fuel tan; It can be applied to log splitter, pressure washer, rotor tiller, tiller cultivator, lawn equipment, water pump, go-kart
Equipped with forged crankshafts, all steel camshaft and cast iron cylinder liners to ensure superior performance and longer service life
All enignes EPA compliant are functionally tested before leaving the factory to guarantee quality; Backed by 1-year limited warranty under normal use and FREE lifetime technical guidance from experts
Last update on 2026-07-23 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Replacement Outdoor Power Tool Engines
Understanding Engine Types
Replacement engines primarily come in two main types: gasoline and electric. Gasoline engines are powerful and ideal for heavy-duty tasks like lawnmowers, tillers, and generators. Electric engines, often battery-powered, are quieter, lighter, and more environmentally friendly, suitable for smaller tools like trimmers or leaf blowers where portability is key.
Key Engine Specifications to Consider
Horsepower (HP) or Cubic Centimeters (CC): Higher HP/CC generally indicates more power, essential for demanding applications. Match this to the requirements of your original equipment.
Engine Displacement (CC): This measures the volume of the cylinder, directly correlating with power output and fuel efficiency.
Torque: Important for applications requiring sustained power under load, such as chainsaws or chippers.
Shaft Type and Orientation: Engines often have vertical or horizontal shafts. Ensure the shaft type and orientation (e.g., diameter, length, taper) match your equipment's mounting needs.
Fuel Type: Most are gasoline, but consider fuel efficiency and emissions if relevant to your usage.
Cooling Systems and Durability
Air-cooled engines are common and efficient for most outdoor power equipment, relying on airflow to dissipate heat. For prolonged, high-intensity use, some engines may feature more robust cooling mechanisms. Look for durable construction materials and reputable brands known for engine longevity.
Additional Features and Compatibility
Check for features like electric start for convenience, low-oil shutdown for engine protection, and emissions certifications if required in your area. Always verify that the mounting pattern, shaft size, and overall dimensions are compatible with your specific power tool to ensure a seamless replacement.
Comparison Tips
Compare horsepower ratings against the original engine or the demands of the task.
Examine shaft dimensions and orientation for proper fitment.
Consider the intended use: heavy-duty tasks require higher power output than lighter applications.
Read reviews focusing on reliability and ease of installation.
Frequently Asked Questions
What is the difference between a horizontal and vertical shaft engine?
The shaft orientation refers to how the output shaft is positioned relative to the engine. Horizontal shaft engines are common in lawnmowers and tillers, while vertical shaft engines are often found in snow blowers and some mower decks.
How do I determine the correct horsepower for my replacement engine?
Check the specifications of your original engine or the equipment's manual. It's generally recommended to match or slightly exceed the original horsepower to ensure adequate power for the intended task.
Are electric replacement engines suitable for heavy-duty tasks?
While electric engines are improving, gasoline engines generally offer more sustained power for very demanding applications like large tillers or generators. Battery-powered options are best suited for lighter, portable tools.
What does 'engine displacement' mean?
Engine displacement, measured in cubic centimeters (CC), indicates the volume swept by all the pistons inside the cylinders. Larger displacement usually means more power and torque.
Should I worry about the shaft diameter and length?
Yes, the shaft diameter, length, and end type (e.g., keyed, threaded) must precisely match your equipment's drive system. An incorrect shaft will prevent proper connection and operation.
What is a low-oil shutdown feature?
This is a safety feature that automatically shuts off the engine if the oil level drops too low. It helps prevent catastrophic engine damage due to lack of lubrication.
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