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wholesale small gasoline engine

BISON sells and customizes small gasoline engines for industrial applications. Including agriculture, pumps, pressure washers, various small machinery, etc. Our customers include original equipment manufacturers (OEM) and professionals from different backgrounds.

single cylinder gasoline engine

* Engine we supply, as follows: BS156(3HP), BS168F(5.5HP), BS168F-1(6.5HP), BS170F(7HP), BS177F(9HP), BS188F(13HP), BS190F(15HP), BS192F(18HP).

single cylinder gasoline engine BS156 BS168F BS168F-1 BS170F BS177F BS188F BS190F BS192F
type single cylinder, air-cooled, 4-stroke, OHV
displacement (cc) 93.5 163 196 210 270 389 420 439
output (hp) 2.6 5.5 6.5 7.0  9.0  13.0  15.0  18.0 
max power (kw) 1.7 4.1 4.8 5.1 6.6 9.6 11.0  13.2
rated power (kw) 1.3 3.0  4.3 4.4 5.5 8.6 9.6 11.8
rated speed (rpm) 3000/3600
bore*stroke (mm) 56*38 68*45 68*54 70*54 77*58 88*64 90*66 92*66
compression ratio 7.7 8.5 8.5 8.5 8.2 8 8 8
ignition system t.c.i
starting system recoil start / electric start
fuel tank volume(l) 1.6 3.6 3.6 3.6 6.5 6.5 6.5 6.5
g.w. (kg) 10.6 15 16 17 28 33 34 36
dimensions (l * w * h) (mm) 300*290*280 390*330*340 505*415*475
20gp (set) 1100 630 630 630 275 275 275 275
40hq (set) 2300 1505 1505 1505 690 690 690 690

v double cylinder gasoline engine

* BISON also offers two-cylinder gasoline engines, which have more powerful output and use higher-quality materials for their components.

V double cylinder gasoline engine BS670 BS740 BS999
engine type v double cylinder, 4 stroke(OHV)
bore * stroke (mm) 78x70 82x70 90x78.5
displacement(cc) 669 739.3 999
compression ratio 8.5: 1 8.5: 1 8.7: 1
power 15.5kw / 3600rpm 16.8kw / 3600rpm 24.5kw / 3600rpm
torque 45N.m / 2500rpm 47N.m / 2500rpm 68N.m / 2500rpm
pto shaft rotation counterclockwise (horizontal shaft output)
ignition system recoil starter transistor ignition recoil starter
starting system electric starter
lubrication system forced splash
carburetor double chamber float carburetor flat suction valve carburetor double chamber float carburetor
governor system electronic & mechanical speed control
air cleaner dual elements(paper or foam)
oil capacity(l) 1.6 1.6 2.4
dimensions (l * w * h) (mm) 550x460x345 550x460x345 510x (385+96) x 558
weight(kg) 45 45 50
fuel consumption <370g/kw.h <370g/kw.h <370g/kw.h

1/2 deceleration gasoline engine

deceleration gasoline engine BS168F-1(1/2 deceleration) BS177F(1/2 deceleration) BS188F(1/2 deceleration)
model GX200 GX270 GX390
reducer chain reducer (gear reducer), clutch reducer
engine type air-cooled,4-stroke,OHV,single cylinder
bore× stroke 68x54mm 77x58mm 88x64mm
displacement(cc) 196 270 389
compression ratio 8.5: 1 8.2: 1 8.0: 1
starting system recoil or key start
speed(rpm) 1800 1800 1800
max output(kw/1800rpm) 6.5hp 9hp 13hp
max.torque 22N.m/1500rpm 31N.m/1500rpm 46N.m/1500rpm
fuel consumption(g/kw. h) 395 374 374
fuel tank capacity(l) 3.6 6 6
oil capacity(l) 0.6 1.1 1.1
n. w.(kg) 20 30 34
dimension(l * w * h) (mm) 455x415x380 515x485x525 515x485x525
container qty/40”hq 974pcs 480pcs 480pcs

vertical gasoline engine

vertical gasoline engine BSI25-S BS145-S BSI70-S BSI90-S BS210-S BS225-S BS150 BS175 BS200 BS225 BS340 BS450E BS550D BS740DE
engine type single cylinder,4-stroke(OHV)
bore * stroke (mm) 61 * 43.5 65 * 43.5 70 * 44.2 71 * 48 74.5 * 48 74.5 * 51 65 * 45.2 70 * 45.2 75 * 45.2 72 * 55 88 * 56 92 * 67.6 94.5 * 78 82 * 70
displacement (ml) 127.1 144.3 170.1 190 210 222 150 173.9 200 223 340.6 449.4 547 739.3
compression ratio 8.3:1 8.3:1 8.3:1 8.3:1 8.3:1 8.3:1 7.8:1 8.3:1 8.3:1 8.3:1 8.0:1 8.7:1 8.7:1 8.2:1
net power (kw/rpm) 2.2/3600 2.5/3600 2.8/3600 3.4/3600 4.0/3600 4.2/3600 2.5/3600 3.0/3600 3.4/3600 4.5/3600 8.15/3600 11/3600 13.2/3600 19.2/3600
net torque (n.m/rpm) 6.8/2500 7.8/2500 8.8/2500 10.5/2500 11.8/2500 12.2/2500 7.8/2500 9.0/2500 10.5/2500 12.5/2500 23.5/2500 31/2500 39.5/3000 56.5/2500
PTO shaft rotation counterclockwise(vertical output
ignition system transistorized magneto ignition
starting system Recoil/Electric starter
lubrication system forced splash
carburetor flat suction valve carburetor
governor system electronic speed regulation Centrifugal mechanical
air cleaner foam+cylinder paper
oil capacity (l) 0.45 0.45 0.45 0.5 0.5 0.5 0.5 0.5 0.5 0.6 1.1 1.5 1.5 2
fuel tank capacity (l) 1 1 1 1 1.2 1.2 0.8/1.0/1.2 1.0~1.5 1.0~1.5 1.5 3.7 / / /
Net weight (kg) 7.5 7.5 7.5 8.5 8.8 8.8 9.5 9 9 12.5 24.5 32.5 35 38.5

Our Clients Said

Start working with China factory, BISON can provide everything you need to purchase, wholesale.


" BISON is great gasoline engine supplier I highly recommend.The price was great and so far the quality seems great as well.Used in old cars chassis for yard cart projects. Good quality with no issues. Has enough power to move.customers very happy with the quality and performance.I am very glad that I cooperated with BISON. "

- Robby Nixon Purchase


" My first import experience.Perfect fit, easy to install, the instructionn manual is very useful.Red wire to battery goes on starter terminal with the black wire from key switch, black from battery grounds on engine mount bolt on frame. Gasoline motor get great feedack, and we are communicating for the second cooperation. "

- Andy C.E.O


" Incredible shipping. here in 24 hrs where stated 5 days?? Horaah! Definitely recommend. Changed vertical mount to horizontal pn log splitter. A wee bit of welding for battery support, and voila. in operation. Nice service! Nice engine! Nice delivery! Will definitely purchase more. "

- Diane K C.E.O


" 300 sets Gasoline engine showed up on May 8th, no damage, all parts in the box. Only issue I have is the instructions not customized into Spanish, The salesman quickly sent me the electronic manual in Spanish and paid for the cost of printing.Great value for the money! but better than that, awesome customer service!! Would definitely buy from again. High integrity and professional customer support! "

- Carito C.E.O

Common FAQ

A holistic solution to your most common questions about BISON small gasoline engines.

Manufacturing company that makes small gasoline engine product

wholesale now

small gasoline engine wholesale guide

Small gasoline engines are a well-known engine type in the category of internal combustion engines. Small gasoline engine is an internal combustion (IC) engine that uses gasoline as a fuel to convert internal energy into kinetic energy. First, the gasoline injection system is used to inject gasoline into the cylinder. After it is compressed to a certain temperature and pressure, it is ignited with a spark plug to expand the gas and do work.

Small gasoline engines have high auto-ignition temperatures, so they usually have a compression ratio of 6:10. Small gasoline engines can also run on fuels other than gasoline, such as natural gas (CNG), LPG, propane. The multi-fuel engine provided by BISON will also give your equipment more functions.

The speed and efficiency of small gasoline engines

A small gasoline engine runs faster than a small diesel engine. This is because the engines’ crankshafts, connecting rods, and pistons are all light (because the lower compression ratio improves design efficiency), and gasoline burns faster than diesel.

The piston stroke of a small gasoline engine is shorter than that of a small diesel engine. For this reason, the piston stroke of a spark ignition engine is completed in a shorter time than that of a diesel engine. But a small gasoline engine has a low compression rate, which makes it less efficient than a small diesel engine.

Generally speaking, the thermal efficiency (on average) of most small gasoline engines is around 20%, about half that of small diesel engines. However, some of the latest small gasoline engines are more efficient (about 38% thermally efficient) than older spark-ignition small engines.

Features of BISON small gasoline engines


  • Easy to start: BISON applied a new starting technology to reduce the pull force of the recoil starter by approximately 15%. The BISON gasoline engine is equipped with a new carburetor and an improved ignition system to ensure the success rate of starting.

  • Gears such as camshafts have also been optimized to reduce internal friction, so the maximum output has increased by about 5% compared to the previous model.

  • Very quiet, advanced air intake system: We have developed a new muffler to eliminate the noise of high-frequency sound, so the BISON gasoline engine can run without annoying noise.

  • Fuel efficient, a high output operation: About half the operating cost of comparable two-stroke small engines. Efficient port configuration and large bore valves maximize power output. The carburetor is equipped with an accelerator pump for quick and effortless acceleration.

  • Smooth performance: Precision-engineered components reduce vibration. Ball bearing supports the crankshaft for more excellent stability. Roller bearing support connecting rod.

  • Easy to use and maintain: Easy-to-use spark plugs, Easy to drain and refill, No oil and gas mixing.

  • Proven reliability: High-quality materials, fit and finish, Integrated fuel system protection

Types of small gasoline engines

BISON provides a diversified product lineup in the engine field, which can be divided into two categories: two-stroke gasoline engines and four-stroke gasoline engines

A four-stroke engine uses four strokes of a piston. There is one piston stroke for each of the following: intake, compression, combustion, and exhaust. The intake port brings gasoline into the piston chamber. Compression compresses the gasoline. Combustion ignites the gasoline and drives the piston down. The exhaust pushes the combusted gases out of the piston cavity. 

Two-stroke small gasoline engines combine intake and exhaust strokes because the engine utilizes both the top and bottom of the piston. Furthermore, the compression and combustion events are combined to produce only two strokes.

They have different sizes and displacements. We develop and produce high-quality products with the technological advantages accumulated over the years, and provide complete services including after-sales service to ensure customer satisfaction.

gasoline engine application

Gasoline engine parts


The mixture of gasoline and air is injected into the cylinder, where it is ignited by a spark plug, which pushes the piston to do work.


The piston is a device that slides up and down in the cylinder. They are connected to the crankshaft and convert the energy of gasoline combustion into mechanical energy.

Spark plug

The function of the spark plug is to ignite the gasoline in the cylinder.


The purpose of the carburetor is to atomize the fuel. This means turning gasoline into a mist, which greatly increases its surface area. This allows the gasoline to burn faster, thereby providing more impetus to the piston.


The flywheel is the power management device of the engine. It is connected to the clutch, which in turn is connected to the transmission.

Small gasoline engine factory in China

If you need to meet specific specifications of the engine, BISON will provide you with excellent service. BISON offers premium quality small gasoline engine machinery for B2B importers and distributors worldwide. BISON is located in China and deals in producing and exporting small diesel and gasoline engines. Our products are also ISO and SGS certified.

The small gasoline engine price is based on bulk order quantity. BISON provides flexible small gasoline engine prices according to importing country and import quantity.

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