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Honda Horizontal OHV Engine — 118cc, GX Series, 3/4in. x 2 7/16in. Shaft, Model# GX120UT2QXC9

Item# 44251
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Honda Horizontal OHV Engine — 118cc, GX Series, 3/4in. x 2 7/16in. Shaft, Model# GX120UT2QXC9

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Was $429.99
Sale $404.99

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  • Honda 118cc GX OHV air-cooled, 4-stroke, horizontal engine
  • Automatic decompression for easy starting
  • Heavy-duty ball bearing supported crankshaft
  • Double walled heavy-duty tank with in tank fuel strainer
  • 50-state compliant engine
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Product Summary

The Honda 118cc 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, go-karts, log splitters and chipper/shredders.

What's Included
  •  (1) Engine

Features + Benefits

  • Honda 118cc GX OHV air-cooled, 4-stroke, horizontal engine
  • Automatic decompression for easy starting
  • Heavy-duty ball bearing supported crankshaft
  • Double walled heavy-duty tank with in tank fuel strainer
  • 50-state compliant engine
Key Specs
Item# 44251
Brand Honda Engines
Manufacturer's Warranty 3 year limited warranty
Ship Weight 35.0 lbs
Engine Displacement (cc) 118
Start Type Recoil
Application Pressure washer, log splitter, tiller, cement mixer, pump, construction equipment
Engine Type GX series OHV commercial-duty
Net Power Output (HP) 3.5 (2.6 kW) at 3,600 RPM
Net Torque (lbs./ft.) 5.4 (7.3 Nm) at 2,500 RPM
Shaft Output Horizontal
Crankshaft Q-type
Shaft Diameter (in.) 3/4
Shaft Length (in.) 2 7/16
Shaft Keyway (in.) 3/16
Shaft End Tapped (Diameter (in.)/Threads per inch) 5/16–24
Shaft Rotation (From PTO Shaft Side) Counterclockwise
PTO Height (in.) 4 11/64
Bearing Type Ball
Cylinders (qty.) 1
Cylinder Bore Cast iron
Bore x Stroke (in.) 2.4 x 1.7
Compression Ratio 8.5:1
Cooling System Air cooled
Air Cleaner Type Cyclone
Fuel Tank Yes
Fuel Type Gasoline
Fuel Tank Capacity (qt.) 2.1
Fuel Filter Fuel tank filler neck strainer
Oil Capacity (qt.) 0.59
Lubrication System Forced splash
Low Oil Alert Yes
Low Oil Shutdown Yes
Ignition System Electronic
Governor System Centrifugal mechanical
Carburetor Float, inner vent
Throttle Control Remote (wire)
Choke Control Manual
Max. RPM 3,600
Muffler Included Yes
Auto Compression Release Yes
Bolt Circle (in.) 3 5/8
Mounting Base L x W (in.) 6 3/8 x 3 5/32–3 11/32
Dimensions L x W x H (in.) 12 x 13 3/8 x 12 1/2
EPA/CARB Approval (California Air Resource Board) Yes

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Replacement Parts
Call To Order: 1-800-657-0516

Mon - Fri 7:00 AM - 6:00 PM (Central)
Sat 7:00 AM - 3:00 PM (Central)

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Honda Horizontal OHV Engine — 118cc, GX Series, 3/4in. x 2 7/16in. Shaft, Model# GX120UT2QXC9 The price is $404.99.
Honda Horizontal OHV Engine — 118cc, GX Series, 3/4in. x 2 7/16in. Shaft, Model# GX120UT2QXC9
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Engine Displacement (cc)
35.8 118 49.4 118 118
Start Type
Recoil Recoil Recoil Recoil Recoil
Application Earth auger, trimmer, Graco paint striper Pressure washer, compressor, log splitter, chipper/shredder Generator, pump, tiller, small construction equipment Pressure washer, log splitter, tiller, cement mixer, pump, construction equipment Cement mixer, pump
Engine Type GX series 4-stroke OHC GX series OHV commercial-duty GXH series OHV commercial-duty GX series OHV commercial-duty GX series OHV commercial-duty
Net Power Output (HP) - 3.5 (2.6 kW) at 3,600 RPM 2.1 (1.6 kW) at 7,000 RPM 3.5 (2.6 kW) at 3,600 RPM 3.5 (2.6 kW) at 3,600 RPM
Net Torque (lbs./ft.) - 5.4 (7.3 Nm) at 2,500 RPM 2.0 (2.7 Nm) at 4,500 RPM 5.4 (7.3 Nm) at 2,500 RPM 5.4 (7.3 Nm) at 2,500 RPM
Shaft Output
Horizontal Horizontal Horizontal Horizontal Horizontal
Crankshaft With clutch Q-type - Q-type H type
Shaft Diameter (in.) Clutch 3/4 5/8 3/4 3/4
Shaft Length (in.) Crank/piston assembly 2 7/16 1 1/4 2 7/16 2 3/32
Shaft Keyway (in.)
- 3/16 - 3/16 1/4
Shaft End Tapped (Diameter (in.)/Threads per inch) - 5/16–24 1/4–28 5/16–24 -
Shaft Rotation (From PTO Shaft Side) Counterclockwise Counterclockwise Counterclockwise Counterclockwise Counterclockwise
Gear Reduction
- - - - H type 6:1
PTO Height (in.)
3.9 4 11/64 3 11/32 4 11/64 4 11/64
Bearing Type Ball - - Ball -
Cylinders (qty.)
1 1 1 1 1
Cylinder Bore
Cast iron Cast iron Cast iron Cast iron Cast iron
Bore x Stroke (in.)
1 17/32 x 1 3/16 2.4 x 1.7 1.65 x 1.42 2.4 x 1.7 2.4 x 1.7
Compression Ratio
8:1 8.5:1 8.0:1 8.5:1 8.5:1
Cooling System
Air Air cooled Air cooled Air cooled Air cooled
Air Cleaner Type
Semi-dry Dual element Semidry Cyclone Dual element
Fuel Tank Yes - - Yes -
Fuel Type Gasoline Gasoline Gasoline Gasoline Gasoline
Fuel Tank Capacity (qt.)
0.67 2.1 0.81 2.1 2.1
Fuel Pump Yes - - - -
Fuel Filter Yes - - Fuel tank filler neck strainer -
Oil Capacity (qt.)
0.106 0.59 0.26 0.59 0.59
Lubrication System
Crankcase pressure driven Forced splash Forced splash Forced splash Forced splash
Low Oil Alert
- Yes No Yes Yes
Low Oil Shutdown
- Yes - Yes Yes
Ignition System
Transistorized magneto Electronic Electronic Electronic Electronic
Governor System
- Centrifugal mechanical Centrifugal mechanical Centrifugal mechanical Centrifugal mechanical
Carburetor
Diaphragm (overflow return) Float Float Float, inner vent Float
Throttle Control
Manual Remote (wire) Manual Remote (wire) Remote (wire)
Choke Control
Manual Manual Manual Manual Manual
Max. RPM
7,000 3,600 7,600 3,600 3,600
Muffler Included
Yes Yes, (standard, spark arrestor) Yes Yes Yes, (standard)
Auto Compression Release
Yes Yes Yes Yes Yes
Bolt Circle (in.)
3.5 3 5/8 4 11/64 3 5/8 3 5/8
Mounting Base L x W (in.)
2.78 x 2.78 6 3/8 x 3 5/32 to 3 11/32 4 3/4 x 2 1/8 6 3/8 x 3 5/32–3 11/32 6 3/8 x 3 5/32 to 3 11/32
Dimensions L x W x H (in.)
8 x 9 1/5 x 9 2/5 12 x 13 3/8 x 12 1/2 8 7/8 x 10 13/16 x 13 12 x 13 3/8 x 12 1/2 12 x 13 3/8 x 12 1/2
EPA/CARB Approval (California Air Resource Board)
Yes Yes Yes Yes Yes