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This engine features a compact design including a hemispherical combustion chamber, integrated cylinder and cylinder head and forged steel connecting rods.  Other features that users will appreciate include a digital ignition system, long-life air filter, automotive-style starter motor and a pressurized fuel pump.  All these elements contribute to high efficiency, superior cooling, low noise and vibrations as well as reliable performance.


The Honda iGX engines are the very finest stationery engines being produced by powering construction equipment (concrete saws, ride-on concrete trowels, vibratory rollers, generators, etc.) and lawn and garden equipment (tractors, shredders, etc.). 


The iGX800's high capacity pump facilitates consistent oil delivery, and a handy oil alert so there is no risk of running dry and doing damage to the engine. There's a dual cylindrical air filter, and a large diameter air intake on board for superior cooling, perfect when operating over long periods of time.

The result is a long-lasting, high-performing and reliable engine.


The EFI (electronic fuel injection) configuration eliminates the carburettor and allows an electronically-controlled fuel injector to deliver the required quantity of fuel, thus offering a number of key features for the new Honda models, including:

  • Fuel efficiency due, in part, to an electronic control system that continuously monitors and adjusts the engine’s air/fuel ratio according to variable operating conditions.
  • Enhanced reliability and less maintenance due to reduced fuel-associated carburettor issues.
  • Improved starting by continuously optimizing the air/fuel mixture.
  • Improved user comfort by eliminating the manual choke and fuel shut-off valve.
Model GX800IRH
Type 4-stroke OHV petrol engine, horizontal shaft
Bore & Stroke 2 / 83 x 72mm
Displacement 799cm3
Compression Ratio 9:1
Net Power 18.5 kW (24.8 HP) / 3600rpm
Continuous Rated Power 13.3 kW (17.8 HP) / 3000 rpm 15.0 kW (20.1 HP) / 3600rpm
Max Net Torque 54.5Nm / 5.56 kgfm / 2500rpm
Ignition System Full transistor ignition coil
Starting System Electric starter
Fuel Consumption at Rated Power 6.88 L/hr - 3600rpm
Lubrication System Full-pressure
Recommended Fuel Unleaded


Oil Capacity Without oil filter replacement: 1.6L
With oil filter replacement: 1.8L
Dimensions 429 x 492 x 438 mm (T-Type)
Dry Weight 48.2kg


Note* All Items are Subject to Availability. Delivery is not included.