A lawnmower might be the most frequently used power tool in your garage, but it’s not the only one.
We researched and tested dozens of engines from the top brands, evaluating performance, durability, and noise level. Our top pick, the Briggs & Stratton 17.5 Gross HP Engine, is reliable, quiet, and has a long lifespan.
Here are the best replacement outdoor power tool engines.
Best Replacement Outdoor Power Tool Engines: Editor Recommended
Our Editor’s Best Replacement Outdoor Power Tool Engines Reviews
Bestseller No. 1
BJTDLLX 7.5HP 4 Stroke Gas Engine, 212CC Engine Go Kart Engine Mini Bike Engine, Horizontal Shaft Gas Powered Engine Pull Start Air Cooling, 14.25in x12.32in x12.99in
- 【QUALITY MATERIALS】7.5HP 4-stroke gasoline engine is made of iron and aluminium with high hardness, corrosion and rust resistance for long term use. gas engine is made of high quality starter and cast iron cylinder liner, which makes the engine work stably and efficiently to avoid seizure.
- 【STRONG POWER】The mini bike engine power up to 3000W, rated speed 3600rpm, can withstand heavy loads such as water pumps, vibrators, generators and high-current power tools etc. 212cc engine adopts manual starter, it can be easily started by pulling it backward.
- 【LARGE FUEL TANK】The 212cc engine has a large 0.95 gallon fuel tank for long hours of operation. You don't have to refill the tank as often, which saves you time and energy. Forced air-cooling system and heat dissipation holes can reduce the temperature of the motor in time, prolonging the service life of the motor and reducing the potential safety hazards.
- 【HUMANISED DESIGN】The gas engine is equipped with a low oil warning light to remind you to add oil in time, and low oil auto shut-off to help keep your engine running year after year. Spark plugs are easily accessible using a ratchet socket combination or a simple T-handle socket extension tool.
- 【APPLICATIONS】The mini bike engine is suitable for water pumps, vibrators, generators, batchers, expanders, threshers, recreational vehicles, construction, farms/pastures, pressure washers, air compressors, trenchers, concrete/mortar mixers/chainsaws, go-karts, mini bikes, lawnmowers, log-splitters, hoovers and more.
Bestseller No. 2
Rewind Starter 4149 190 4001 Compatible With FS94R KM94R HL91K HL94 HL94K String Trimmer Replacement Part Engine Component Power Tool Accessory Replacement Part Outdoor Power Equipment
- Compatible with Multiple Models: Specifically designed for FS94R, KM94R, HL91K, HL94, and HL94K models. This REWIND STARTER 4149 190 4001 ensures a perfect fit and optimal performance for these specific equipment types.
- Construction: Built to withstand rigorous use, this starter is engineered for longevity and reliability. Its robust design makes it suitable for demanding outdoor conditions, ensuring consistent performance over time.
- Effortless Installation: Designed with user-friendliness in mind, this rewind starter allows for quick and straightforward setup. Whether you're a professional or a DIY enthusiast, you'll appreciate the hassle-free installation process.
- Enhances Starting Efficiency: This starter significantly improves the starting process of your equipment. Experience smoother and more efficient starts, reducing downtime and boosting your overall productivity in outdoor tasks.
- Low Maintenance Design: Crafted to require minimal upkeep, this starter allows you to focus more on your outdoor projects and less on equipment maintenance. Its user-friendly design contributes to long-term efficiency and convenience.
Bestseller No. 3
BILT HARD 420cc 15HP Gas Engine with Electric Start, Horizontal Shaft 4 Stroke OHV Gas Motor, Gas Powered Multi-Use Engine
- 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 dependable performance. The engine is shipped dry so make sure you add gasoline and engine oil correctly before starting (not included).
- 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, with a clearance of: 0.027-0.0.31 in. The engine runs on a minimum 87+ unleaded gasoline (ETHANOL＜10% recommended).
- 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 failure. It's the perfect replacement engine for cement mixers, compressors, mowers, log splitters, vacuums, tillers, water pumps, chipper/shredders and blowers.
- 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, MX400, 402cc etc.
- 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.
Bestseller No. 4
RustyVioum 7.5 HP Gas Engine Motor 212CC 4 Stroke Go Kart Engine Motor w/Air Cooling Pull Start Gas Powered Engine for Go Kart Log Splitter Lawnmowers Water Pumps
- 【212cc Engine】This 7.5HP 4-Stroke engine has a displacement of 212cc, with a power of up to 3000W and a rated speed of 3600rpm, so the kart engine can withstand heavy loads such as water pumps, vibrators, generators and high-current power tools.
- 【Good Heat Dissipation Effect】A forced air cooling system and heat dissipation holes can reduce the temperature of the motor in time, prolong the service life of the motor, and reduce potential safety hazards. 212cc engine adopts manual starter, it can be easily started by pulling it backward.
- 【Large Fuel Tank】The fuel tank of the product has a large capacity of 0.95gal, enabling it to work for a long time. You don't need to fill the fuel tank frequently to save time and energy. The is equipped with a high-precision carburetor, which improves the combustion efficiency, thus reducing fuel consumption.
- 【Humanized Design】The go kart motor is equipped with a low oil alarm light that can alert you to add oil in time and a low oil automatic shutdown, helping your engine run year after year. The spark plug placement is easy to reach with a ratchet-socket combo or a simple T handle socket extension tool.
- 【Wide Range of Applications】The 212cc engine is suitable for water pumps, vibrators, engine , dosing machines, puffers, threshers, recreational vehicles, construction, farm/ranch, pressure washers, air compressors, trenchers, concrete/mortar mixers/saws, go-karts, minibikes, lawnmowers, log-splitter, vacuums, etc.
Bestseller No. 5
BYGOVICE 15HP Gas Engine, 4 Stroke Gasoline Engine, Gas Powered Multi-Use Engine for Agricultural Lawn Mowers and Water Pump
- High-quality Material: The Pull Start Gasoline Engine is made of plastic and aluminum, which has high hardness, anti-corrosion, and rust resistance.
- Powerful & High Efficiency: With 6500RPM high speed and 31cc replacement, our engine produces a lot of power to help you get the job done quickly and efficiently.
- Translucent Fuel Tank: The gas engine's fuel tank has a capacity of 0.237 gallons and can be operated for about 1 hour after refueling, avoiding the burden of frequent refueling. Its translucent design makes it easy for you to check the fuel usage at any time, bringing you a more secure feeling.
- Easy to Use: The four-stroke engine has a dedicated oil pump and oil passage, which can deliver oil to various parts that need lubrication. Moreover, the stater handle allows you to start the engine with a simple hand pull.
- Good Heat Dissipation: The air-cooled type engine with a hollow design of the housing can promote air cooling and prevent the engine from burning out after long-term use.
Bestseller No. 6
Jinshining 1Pc Red Jump Start Electric Engine Drill Bit Adapter for Troy Bilt Plug Button Jump Start for Troy Bilt Craftsman Quick Start String Trimmers Outdoor Power Tools
- COMPATIBILITY: Designed specifically for Troy Bilt and Craftsman string trimmers with jump start capability, ensuring perfect fit and functionality
- QUICK START FEATURE: Enables instant engine starting using a power drill, eliminating the need for manual pull starts
- UNIVERSAL DRILL FIT: Standard hex shank design allows use with most power drills and drill drivers for maximum convenience
- DURABLE CONSTRUCTION: Made from high-grade steel with red coating for long-lasting performance and easy visibility
- EASY INSTALLATION: Simple plug-and-use design allows quick attachment to compatible string trimmer engines
$7.99
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Bestseller No. 7
TURBOTUNITY Carburetor 16100-ZF6-V01 for Honda GX390 GX340 Predator 420 11hp 13hp 339 389cc 420cc Engines, Mini bike Lawn Mower 4000psi Pressure Washer Carb Replacement
- The TURBOTUNITY carburetor kit is compatible with Honda and Cloned 337 338 339 340 389 390 cc 11-13hp gx 340 390 small engines.
- Replacing part # 16100-ZF6-V01 16100-ZH9-W21 16100-ZE2-W71.
- The carburetor also replaces lawn mowers, water pumps, pressure washers, log splitters and air compressors with a GX340 GX390 11 13 HP small engine.
- The kit includes a TURBOTUNITY carburetor and 3 carb mounting gaskets, 1 cylinder head cover gasket, 1 muffler gasket, 1 insulator, 1 air filter and 1 spark plug for your convenience. Package Included: 27 mm carb is a fuel faucet built into the w/ 30.5 mm air intake and w/ 52mm center-to-center mounting hole.
- Please note: The carburetor can not be used on Generator.
$20.99
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Bestseller No. 8
7.5Hp 4-Stroke Gas Engine,210Cc Gas Powered Engine with Electric Starting Ohv Air Cooled Single Cylinder Gas Engine 3600Rpm for Go-Karts, Compressors, Trenchers, Generators, High-Pressure Washers Etc
- Low Fuel Consumption: The overhead valve is used, which effectively helps reduce carbon buildup and dramatically improves fuel savings. Air filter also improves air filtration performance and reduce wear. Both can help you save a lot of money on fuel costs.
- Strong Power: The gasoline engine boasts a robust 7.5HP horsepower, a displacement of 210cc and a rotating speed of 3600RPM, which provides you with strong power and ensures that your work can be completed quickly and easily.
- Stable Running & Efficient Cooling System: The engine is equipped with metal cam, forged crankshaft and cast iron cylinder liner, ensuring superior performance and a longer lifespan. Start it manually or electrically and enjoy stable engine operation every time. The built-in forced air cooling system and ventilated heat sink are designed to keep the motor cool and provide high reliability and durability.
- High Safety: The Gas Powered Engine is equipped with an oil alarm. If enough oil is not added before starting, the machine will automatically turn off to protect the machine. Thus the machine will not be easily damaged and has a longer service life.
- Low Noise & Large Fuel Tank: The Gas Engine adopts a silencer, which has a good noise reduction effect. This engine works hard to create a quiet working environment for you. The engine has a large fuel tank capacity of 0.95 gallon allowing it to work for a long time. You don't need to fill the tank frequently, which is very convenient.
Bestseller No. 9
Serendicy 7.5 HP Gasoline Engine 3600RPM Single Cylinder 4 Stroke Engine Motor Air Cooling Recoil/Manual Start Gas Powered Engine for Aircraft, Automobiles, Speedboats, Farm Garden Machinery
- ✅【High Power】: Our engines are powerful and can convert internal energy into kinetic energy faster.
- ✅【Wide Application】: This gasoline engine is widely used in aircraft, automobiles, speedboats, racing cars, small farm machinery, garden machinery, and so on.
- ✅【Durable】: Before going into mass production, we did a continuous 100-hour endurance test on the gasoline engine. The test results showed that there was minimal wear and tear on the machine, indicating the durability of the engine.
- ✅【Noise Reduction Processing】: The gasoline engine is equipped with a silencer inside. This greatly reduces noise when it is working.
- ✅【Heat Resistant】: The gasoline engine gives off a lot of heat during operation. However, after 100 hours of continuous testing, the engine was not damaged by the high temperature. It shows that the material we use is heat resistant.
Bestseller No. 10
runfider Jump Starter Tool Electric Engine Drill Bit Adapter Fit for Troy Bilt Stihl B&S Trimmers, Lawn mowers, Snow blowers, Chainsaws & Other Handheld Equipment Device Tools for Assisting Startup
- Advantage：Trimmers, lawnmowers, snowblowers, chainsaws and other handheld power tools are often difficult to start due to age and maintenance or aging of equipment components, relying on manpower is often ineffective, you need to use other equipment with greater power, such as a manual drill to start, relying on a manual drill's strong torque and speed can often be a solution to such a problem, the product is designed and produced for this reason.
- Adaptability: Suitable for all kinds of lawn mowers, snowplows, trimmers, leaf blowers, as long as you have a positive hexagonal starter socket, you can use this product.Compact size, easy to carry
- How to use: According to the arrow instructions, insert one end into the machine to be started, one end into the hand-held drill, start the drill to complete the start, during which you can constantly adjust the speed of the drill to speed up the start speed, the internal ratchet design, to assist in the start will not follow the equipment together with the rotation, can be easily removed!
- Durable : Made of high hardness alloy steel and plastic material, durable and reusable. As a wear and tear product, if our product is damaged after a few times of use, we can send you a new one to relieve your worries!
- About us：We offer a one-year warranty, during this period of quality problems, you can turn to us for help, we provide you with returns and exchanges!
$8.99
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Best Replacement Outdoor Power Tool Engines Buying Guide
Before choosing the best replacement outdoor power tool engine you should consider the following options:
1. Horsepower: You should always consider horsepower when choosing a replacement engine.
You should pick an engine with the right horsepower for the job you want to accomplish. If you are using the engine for material handling applications, you should consider the torque and horsepower of the engine.
A higher horsepower engine will have a higher level of power and torque to accomplish the job.
2. Displacement: Displacement is another important factor to consider when buying an engine. Displacement refers to the amount of space an engine has for the combustion of air and fuel.
The larger the displacement, the bigger the engine and the more power it will have.
3. RPM: RPM stands for rotations per minute and refers to how fast the engine can spin.
You should make sure the engine you want to buy can spin at the right rate for the job you want to accomplish. In cases where the engine will be used for something like powering a woodworking machine or a drill, you should look for an engine with a higher RPM rate.
4. Fuel Efficiency: You should also consider the fuel efficiency of an engine when shopping for a replacement engine.
The higher the fuel efficiency, the more money you will save in the long run. You can calculate the fuel efficiency of an engine by dividing the output horsepower by the fuel flow rate.
What else you should know about the best replacement outdoor power tool engines
1. What are the best replacement outdoor power tool engines?
Some of the more popular and well-reviewed replacement engines include those made by Briggs & Stratton, Honda, and Kawasaki.
2. What are the most durable outdoor power tool engines?
Such as the quality of the engine, the type of power tool it is used in, and how it is used and maintained. However, some of the most durable outdoor power tool engines are those made by manufacturers such as Honda, Briggs & Stratton and Kawasaki.
3. What are the most powerful outdoor power tool engines?
The most powerful outdoor power tool engines are typically found in industrial-grade equipment such as generators, pumps, and pressure washers. These engines are designed to deliver high levels of power and torque, and can typically handle heavy-duty applications.
4. What are the most fuel-efficient outdoor power tool engines?
Some of the most fuel-efficient outdoor power tool engines include those that are designed specifically for use with ethanol-blended fuel, as well as those that feature advanced fuel injection technology. Other fuel-saving features that can be found on some outdoor power tool engines include automatic idle control and variable speed settings.
5. What are the quietest outdoor power tool engines?
The quietest outdoor power tool engines are those that have been specifically designed to minimize noise. There are a number of different manufacturers that offer outdoor power tools with Quiet Technology, and these are typically the best options for those who are looking for a quiet engine.
Conclusion
On the market, there are numerous best replacement outdoor power tool engines. Hopefully, the list of the top ten best replacement outdoor power tool engines will save you time researching and deciding on the best one for you.