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Honda GX630 20.8 HP Engine
Honda GX630 20.8 HP Engine
Honda GX630 20.8 HP Engine
Honda GX630 20.8 HP Engine
Honda GX630 20.8 HP Engine
Honda GX630 20.8 HP Engine

Honda GX630 20.8 HP Engine

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Delivering performance and quality

Honda V-Twin engines offer horsepower, adaptability, quiet operation, and fuel efficiency. Not to mention a 3-year warranty.

Common Applications

  • Agricultural equipment
  • Commercial lawn and garden equipment
  • Construction/industrial equipment
  • Forestry equipment
  • Generators
  • Pressure washers
  • Small vehicles
  • Tillers/cultivators
  • Water pumps



  • Fuel economy is similar to fuel injection, with the simplicity of carburetion
  • Variable timing digital CDI ignition
  • Includes a rev limiter to protect against damage from over-revving
  • Two barrel inner-vent carburetor for more precise fuel metering
  • Insert style rod bearings


  • Hemispherical combustion chamber
  • 9.3:1 compression ratio generates high-power output without the need for premium fuel
  • Forged steel crankshaft
  • Pressure-fed crankshaft bearings.


  • Integrated cylinder and head
  • Racing-inspired forged steel connecting rods.


  • High-capacity 36-blade cooling fan
  • Aluminum push rods with steel tips, lighter weight, lower vibration, and quieter operation.


  • High-capacity oil pump
  • Dual cylindrical air filter
  • Large-diameter air intake for superior cooling
  • 3-Year Limited Warranty
  • Oil Alert.


  • Hour meter available
  • Conveniently located controls, with several configurations available based on user preference
  • Automotive-type spin-on oil filter.


  • Automatic mechanical decompression system
  • Variable ignition timing.

Emissions Compliant

  • CARB and EPA certified
  • No catalyst necessary.

Available Options

  • High-capacity charging systems
  • A variety of control box configurations
  • Hour meter
  • Dry fuel versions


  • Engine Type - Air-cooled 4-stroke OHV

  • Bore x Stroke - 78 mm x 72 mm

  • Displacement - 688 cm^3

  • Net Power Output* - 20.8 hp (15.5 kW) @ 3,600 rpm

  • Net Torque - 35.6 lbs ft (48.3 Nm) @2,500 rpm

  • PTO Shaft Rotation - Counterclockwise (from PTO shaft side)

  • Compression Ratio - 9.3:1

  • Lamp/Charge coil options - 2.7A, 17A, 26A

  • Carburetor - Horizontal type, two barrel butterfly valve, internal vent.

  • Ignition System - Digital CDI with variable ignition timing

  • Starting System - Electric

  • Lubrication System - Forced lubrication

  • Governor System - Centrifugal mechanical

  • Air Cleaner - Dual element

  • Oil Capacity - 2.0 litres (2.1 U.S. qts)

  • Fuel - Unleaded 86 octane or higher

  • Dry Weight - 44 kg (96.8 lbs)


This product qualifies for Free Shipping. There are no minimum purchase requirements or hidden fees. The price you see is the price you pay, without any surprises at checkout.

Quality assurance is our top priority. Before any item leaves our warehouse, it undergoes a Complimentary Pre-Inspection. This process ensures that what you receive is exactly what you ordered, in perfect condition.

Time is precious, and we respect yours. Our Unparalleled Speed in processing and shipping orders means you won't have to wait long for your purchase. Our efficient logistics team works tirelessly to ensure that your order is dispatched promptly and arrives well within the estimated delivery time of 3-5 Days.

Above all, we prioritize your Peace of Mind. From secure packaging to reliable delivery partners, every step of the shipping process is designed to ensure your order reaches you safely and without any hassle. Plus, our customer service team is always here to help with any questions or concerns, providing you with a worry-free shopping experience.


At HOC, we meticulously select our dealers from a pool of globally renowned entities, ensuring that we offer only the best to you. Our commitment to excellence is further reflected in our offering of the most Comprehensive Warranty Periods among equipment dealers across North America.

This approach allows you to make your selection with a sense of confidence and assurance, knowing well that your purchase is under the protection of a warranty that's as steadfast and dependable as the product itself. We invite you to experience the peace of mind and trust that come with choosing HOC, where your satisfaction and security are our topmost priorities.

To view the specific warranty period applicable to this product, and to delve into the details of your protection, please click the link below.

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Honda GX630 20.8 HP Engine

Honda GX630 20.8 HP Engine