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Honda Horizontal OHV Engine with Electric Start — 389cc, GX Series, 3 31/64in. Shaft, Model# GX390UT2QAE2

Item# 606600
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Honda Horizontal OHV Engine with Electric Start — 389cc, GX Series, 3 31/64in. Shaft, Model# GX390UT2QAE2

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Only $784.99
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  • Honda 389cc GX-series OHV commercial-grade engine
  • Fuel-efficient operation with precision camshaft design and high compression ratio
  • OHV design delivers increased efficiency and optimal power transfer
  • Digital CDI ignition system with variable timing
  • Smooth performance and reduced vibration from precision-balanced crankshaft and reduced piston weight
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Product Summary

The Honda 389cc GX-Series OHV commercial-grade engine is designed for the most demanding commercial applications. Reliable and dependable, it has an OHV design that offers cooler, fuel-efficient operation with cast iron sleeve for longer service life. Easy to start and runs quiet. Meets EPA and CARB emission level standards. Common applications include construction equipment, pressure washers, air compressors, go-karts, log splitters and chipper/shredders.

What's Included
  •  (1) Engine

Features + Benefits

  • Honda 389cc GX-series OHV commercial-grade engine
  • Fuel-efficient operation with precision camshaft design and high compression ratio
  • OHV design delivers increased efficiency and optimal power transfer
  • Digital CDI ignition system with variable timing
  • Smooth performance and reduced vibration from precision-balanced crankshaft and reduced piston weight
  • Ball bearing-supported crankshaft offers greater stability
  • Aluminum push rods reduce valve clearance and noise level
  • Muffler, breather valve, case cover, air intake system, rigid crankcase, helical-cut gears and lightweight materials are also designed to reduce noise level
  • Oil alert protects engine
  • Carburetor coating and filter help protect fuel from impurities
  •  Cast iron cylinder sleeve
  •  Reliability from high-quality materials, fit and finish
  • Dual-element air cleaner
  • Easy to use and maintain with simple throttle control, Large fuel tanks, wide-mouth automotive-style fuel cap, dual oil fills and drains, easy-to-use control box and easily accessible spark plug
  • Get quick starts with the heavy-duty recoil starter with ergonomic design and automatic decompression system
  • Double-walled heavy-duty tank with in-tank fuel strainer
  •  Battery cables not included
  • 50-state compliant engine
Key Specs
Item# 606600
Brand Honda Engines
Manufacturer's Warranty 3 year limited warranty
Ship Weight 90.0 lbs
Engine Displacement (cc) 389
Start Type Electric w/recoil backup
Application Pressure washer, compressor
Engine Type GX 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 Output Horizontal
Crankshaft Q-type
Shaft Diameter (in.) 1
Shaft Length (in.) 3 31/64
Shaft Keyway (in.) 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 7/16-20
Shaft Rotation (From PTO Shaft Side) CCW
PTO Height (in.) 5 1/4
Cylinders (qty.) 1
Cylinder Bore Cast iron
Bore x Stroke (in.) 3.5 x 2.5
Compression Ratio 8.2:1
Cooling System Air
Air Cleaner Type Dual element
Fuel Tank Standard
Fuel Type Gasoline
Fuel Tank Capacity (qt.) 6.4
Fuel Filter Fuel tank filler neck strainer
Oil Capacity (qt.) 1.16
Lubrication System Forced splash
Low Oil Alert Yes
Low Oil Shutdown Yes
Ignition System Electronic
Governor System Centrifugal mechanical
Carburetor Float, external vent
Throttle Control Remote, wired
Choke Control Manual
Max. RPM 3,600
Charging System Amps 3
Bolt Circle (in.) 5, 6.5
Mounting Base L x W (in.) 7.7 x 3.39–4.06
EPA/CARB Approval (California Air Resource Board) Yes

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Call To Order: 1-800-657-0516

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Honda Horizontal OHV Engine with Electric Start — 389cc, GX Series, 3 31/64in. Shaft, Model# GX390UT2QAE2 The price is $784.99.
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Hide Similarities
Engine Displacement (cc)
270 389 270 389 389
Start Type
Recoil Recoil Electric w/recoil backup Electric w/recoil backup Electric w/recoil backup
Application Chipper, shredder, log splitter, compressor Pressure washer, compressor Pressure washer, compressor, log splitter Pressure washer, compressor Pressure washer, compressor
Engine Type GX series OHV commercial-duty GX series OHV commercial-duty GX series OHV commercial-duty GX series OHV commercial-duty GX series OHV commercial-duty
Net Power Output (HP) 8.5 (6.3 kW) at 3,600 RPM 11.7 (8.7 kW) at 3,600 RPM 8.5 (6.3 kW) at 3,600 RPM 11.7 (8.7 kW) at 3,600 RPM 11.7 (8.7 kW) at 3,600 RPM
Net Torque (lbs./ft.) 14.1 (19.1 Nm) at 2,500 RPM 19.5 (26.4 Nm) at 2,500 RPM 14.1 (19.1 Nm) at 2,500 RPM 19.5 (26.4 Nm) at 2,500 RPM 19.5 (26.4 Nm) at 2,500 RPM
Shaft Output
Horizontal Horizontal Horizontal Horizontal Horizontal
Crankshaft Q-type Q-type Q-type Q-type Q-type
Shaft Diameter (in.) 1 1 1 1 1
Shaft Length (in.) 3 31/64 3 31/64 3 31/64 3 31/64 3 31/64
Shaft Keyway (in.)
- 1/4 1/4 1/4 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) 3/8–24 7/16-20 7/16–20 7/16-20 7/16-20
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise CCW Counterclockwise
PTO Height (in.)
5 1/4 5 1/4 5 1/4 5 1/4 5 1/4
Cylinders (qty.)
1 1 1 1 1
Cylinder Bore
Cast iron Cast iron Cast iron Cast iron Cast iron
Bore x Stroke (in.)
3.0 x 2.3 3.5 x 2.5 3.0 x 2.3 3.5 x 2.5 3.5 x 2.5
Compression Ratio
8.5:1 8.2:1 8.5:1 8.2:1 8.2:1
Cooling System
Air cooled Air cooled Air cooled Air Air cooled
Air Cleaner Type
Dual element Dual element Dual element Dual element Dual element
Fuel Tank - Standard (White) - Standard Standard (White)
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Tank Capacity (qt.)
5.6 6.4 5.6 6.4 6.4
Fuel Filter
Fuel tank filler neck strainer Fuel tank filler neck strainer Fuel tank filler neck strainer Fuel tank filler neck strainer Fuel tank filler neck strainer
Oil Capacity (qt.)
1.16 1.16 1.16 1.16 1.16
Lubrication System
Forced splash Forced splash Forced splash Forced splash Forced splash
Low Oil Alert
Yes Yes Yes Yes Yes
Low Oil Shutdown
- Yes - Yes Yes
Ignition System
Electronic Electronic Electronic Electronic Electronic
Governor System
Centrifugal mechanical Centrifugal mechanical Centrifugal mechanical Centrifugal mechanical Centrifugal mechanical
Carburetor
Float, external vent Float, external vent Float, external vent Float, external vent Float, external vent
Throttle Control
Remote (wire) Remote (wire) Remote (wire) Remote, wired Remote (wire)
Choke Control
Manual Manual Manual Manual Manual
Max. RPM
3,600 3,600 3,600 3,600 3,600
Charging System Amps - - - 3 10
Muffler Included
- Silent - - Silent, exhaust pipe protector, deflector
Auto Compression Release
- Yes - - Yes
Bolt Circle (in.)
5, 6 1/2 5, 6 1/2 5, 6 1/2 5, 6.5 5, 6 1/2
Mounting Base L x W (in.)
7 11/16 x 3 3/16–3 11/16 7 11/16 x 3 25/64–4 1/16 7 11/16 x 3 3/16–3 11/16 7.7 x 3.39–4.06 7 11/16 x 3 25/64–4 1/16
Dimensions L x W x H (in.)
15 x 16 7/8 x 16 1/8 15 7/8 x 17 11/16 x 17 3/8 15 x 16 7/8 x 16 1/8 - 15 7/8 x 17 11/16 x 17 3/8
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes