Small Engine

Photo of lawn mower with GESi logo

Whether you’re a landscaper, golf course owner, or simply a homeowner, a GESi can help you remove 99% hydrocarbons (HC),carbon monoxide (CO), and nitrogen oxides (NOx) emissions.

The leading emission control technology that reduces smog and greenhouse gas emissions more about GESi »


Our small engine models are perfect for use in public areas. They can reach operating efficiency within 9 seconds of startup, and start reducing emissions and noise immediately. Also, our High flow capacity ensures you don’t loose any horsepower, or work hours to "smog alert days."


  • Commercial and residential use in: municipalities, commercial properties, farms, parks.
  • Works on lean-burn or rich-burn engines such as lawnmowers, tillers, sweepers, snow blowers and golf carts.
  • Gasoline, natural gas, propane, bio-fuel and diesel engines

Technical notes

  • Made from low carbon steel or stainless steel (depending on application)
  • Can be recycled to recover up to 20% of original cost
  • Direct bolt-on replacement of original manufacturer equipment, for all makes and models
  • Performance guaranteed when operated within engine manufacturer’s specification

Application Test Results

Test Results Graph


Particulate traps for diesel engines


"As one of the premier ice-skating facilities in Ontario, Campus Ice Centre is striving to reduce the environmental footprint of our facility for the safety of our communities and our children. The emissions reductions on our ice edger were significant and the hydrocarbon odors have been eliminated." Tim Watson General Manager Campus Ice Centre