Honda Horizontal OHV Engine – 389cc, GX Series, 1in. X 3 31/64in. Shaft

Honda Horizontal OHV Engine – 389cc, GX Series, 1in. X 3 31/64in. Shaft


Honda Horizontal OHV Engine – 389cc, GX Series, 1in. X 3 31/64in. Shaft

SKU: STE001249Category:
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The Honda 389cc GX Series OHV commercial-grade engine is designed for the most demanding commercial applications. It has set an industry standard for reliability and durability. Overhead Valve design offers cooler, fuel-efficient operation and cast iron cylinder sleeve provides longer service life. The GX is reliable, easy starting and quiet running. Meets EPA and CARB emission levels standards. This legendary engine has earned the reputation as the preferred engine for construction equipment. Common applications include pressure washers, compressors, log splitters and chipper/shredders.

What’s Included
  • (1) Engine, Model# GX390UT2QAA2


Features for Honda Horizontal OHV Engine — 389cc, GX Series, 1in. x 3 31/64in. Shaft, Model# GX390UT2QAA2

  • Air-cooled 4-stroke horizontal OHV engine for increased efficiency and optimal power transfer
  • Automatic decompression and heavy-duty recoil starter for easy starting
  • Heavy-duty ball bearing supported crankshaft for greater stability
  • Large double walled heavy-duty tank with in tank fuel strainer
  • Large, easy to fill automotive-style fuel cap
  • Auto idle/throttle control for extended engine life, improved fuel economy and reduced engine noise
  • Precision camshaft for better fuel economy with precise valve timing and optimal valve overlap
  • Low noise level thanks to a large capacity, multi-chambered exhaust system
  • Improved camshaft and muffler reduce engine noise by up to 5dB
  • Oil Alert protects engine
  • Cast iron cylinder
  • Dual element air filter
  • Easy to use throttle control
  • 50-state compliant engine
  • Dual oil drains and fills for quick oil changes
  • Easily accessible spark plug
Key Specs
BrandHonda Engines
Manufacturer’s Warranty3 year limited warranty
Ship Weight85.0 lbs
Engine Displacement (cc)389
Start TypeRecoil
ApplicationPressure washer, compressor
Engine TypeGX series OHV commercial-duty
Net Power Output (HP)11.7 (8.7 kW) at 3,600 RPM
Net Torque (lbs./ft.)19.5 (26.4 Nm) at 2,500 RPM
Shaft OutputHorizontal
Shaft Diameter (in.)1
Shaft Length (in.)3 31/64
Shaft Keyway (in.)1/4
Shaft End Tapped (Diameter (in.)/Threads per inch)3/8–24
Shaft Rotation (From PTO Shaft Side)Counterclockwise
PTO Height (in.)5 1/4
Cylinders (qty.)1
Cylinder BoreCast iron
Bore x Stroke (in.)3.5 x 2.5
Compression Ratio8.2:1
Cooling SystemAir cooled
Air Cleaner TypeDual element
Fuel TankStandard (White)
Fuel TypeGasoline
Fuel Tank Capacity (qt.)6.4
Fuel FilterFuel tank filler neck strainer
Oil Capacity (qt.)1.16
Lubrication SystemForced splash
Low Oil AlertYes
Low Oil ShutdownYes
Ignition SystemElectronic
Governor SystemCentrifugal mechanical
CarburetorFloat, external vent

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