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Honda GX120-AR 4 HP Rammer Engine

*Image may not represent actual engine type
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42.00 LBS
Calculated in shopping cart or at checkout
Current Stock:
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Shaft Size:
20mm Threaded
Engine Type:
Air-cooled 4-stroke OHV
Bore x Stroke:
60 X 42 mm
118 cm3
Net Power Output:
3.5 HP (2.6 kW) @ 3,600 rpm
Net Torque:
5.4 lb-ft (7.3 Nm) @ 2,500 rpm
Compression Ratio:
Float Type
Starting System:
Governor System:
Centrifugal Mechanical
Unleaded 86 octane or higher
Dry Weight:
28.7 to 39.7 lb (13 to 18 kg)
Length (min):
12.0" (305mm)
Width (min):
13.4" (341mm)
Height (min):
12.5" (318mm)

Product Description

Common Applications

  • Commercial lawn and garden equipment
  • Tillers / cultivators
  • Generators
  • Construction / industrial equipment
  • Agricultural equipment
  • Water pumps

Fuel Efficient, High Output Operation

  • Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency
  • OHV design for increased efficiency and optimal power transfer
  • High compression ratio for better fuel efficiency

Smooth Performance

  • Precision engineered components result in lower vibration
  • Ball bearing supported crankshaft for greater stability

Exceptionally Quiet

  • Large capacity, multi-chamber exhaust system
  • Reduced mechanical noise due to light weight, noise-reducing materials
  • Forged steel crankshaft and rigid crankcase
  • Helical cut gears
  • Sophisticated air intake system

Proven Reliability

  • Oil Alert
  • Cast iron cylinder sleeve
  • High quality materials, fit, and finish
  • Dual element air cleaner
  • Fuel Valve
  • 3-Year Limited Warranty

Easy to Use and Maintain

  • Simple throttle control
  • Large fuel tanks
  • Large automotive type fuel cap
  • Dual oil drains and fill
  • Easy, convenient, heavy duty control box
  • Easily accessible spark plug

Easy Starting

  • Heavy duty recoil starter
  • Automatic mechanical de-compression system

Emissions Compliant

  • CARB and EPA certified
  • No catalyst necessary

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