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Honda GX630 Gas Engine Electric start 1" straight side shaft GX630RH-QZB3 GX630-QZB3
HONDA GX630 RH QZB3 Gas Engine with Electric start

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Honda GX630 On Sale With Free Shipping!
Price: $2,693.00
Sale Price: $2,589.00

Availability: Usually Ships in 24 Hours
Product Code: GX630RH-QZB3


Honda GX630RH-QZB3 GX630-QZB3 Small Gas Engine Electric Start

With 1" Diameter, 1/4" Keyway Shaft


The highest quality guaranteed! We have been in business since 2005, and our engines are fully rebuildable with all parts available. The Honda GX630 engine replacement for GX630RH-QZB3 or GX630-QZB3.

The Honda GX630 is the go-to engine for go karts, generators, pressure washers, and various industrial and commercial uses. These premium residential motors are fuel efficient, easy starting and smooth performance. This convenient, heavy duty and reliable 4 stroke OHV twin cylinder engine does the job for many applications. Also, offering a 3-year limited warrenty on these motors. Your order ships quickly with expert turnaround time in our fully stocked warehouse. Packaged with care, Carroll Stream Motor Company provides free shipping.

This Honda engine is a 4 Stroke OHV twin cylinder, which is a 88 X 64 stroke. It is a 688cc, 20.8 HP and 3600 RPM.

This Honda small motor is built with quality components and is ready to outlast the competition. Purchase now to take advantage of our free shipping and quick turnaround time. Or, call if you have questions! 888-208-2088, 248-628-4638.

Browse all of our Honda horizontal shaft options:

98cc GX100T-QA2 Recoil Start
118cc GX120UT2-HX2 Recoil Start
118cc GX120UT3-QX2 Recoil Start
160cc 4GC160LA-QHA Recoil Start (Replaces GC160LA-QHG, GC160LAQHG)
163cc GX160UT2-QX2 Recoil Start
163cc GX160-HX2 Recoil Start
196cc GX200UT2-QXE2 Electric Start
196cc GX200UT2-QX2 Recoil Start
270cc GX270UT2-HA2 Recoil Start
270cc GX270UT2-QAE2 Electric Start (Replaced by GX270UT2X-QA2)
270cc GX270UT2-QA2 Recoil Start (Replaced by GX270UT2X-QA2)
389cc GX390UT2-QA2 Recoil Start
389cc GX390UT2-QAE2 Electric Start (Replaced by GX390UT2X-QAE2)
389cc OHV GX390UT2-QC9 Recoil Start
389cc GX390UT2X-HA2 Recoil Start
389cc GX390UT2-QNE2 Electric Start (Replaced by GX390UT2X-QNE2)
688cc GX630RH-QXA Electric Start
688cc GX630RH-QAF Electric Start
688cc GX630RH-QAF1 Electric Start
688cc GX630RH-QZB2 Electric Start
688cc GX630RH-QZB3 Electric Start
688cc GX630RH-TXF2 Electric Start
688cc GX690RH-TAF1 Electric Start
688cc GX690RH-TAF1 Electric Start
  • Specifications
  • Make
  • Honda
  • Model
  • GX630RH-QZB3
  • Type
  • Small Engine
  • Fuel
  • Gas Unleaded 86 Octane or Higher
  • Engine Type
  • 4 Stroke OHV Twin Cylinder
  • Bore/Stroke
  • 78 X 72
  • Displacement
  • 688cc
  • Compression Ratio
  • 9.3:1
  • Max Power
  • 20.8 HP @ 3600 RPM
  • Max Torque
  • 35.6 ft. lbs. @ 2500 RPM
  • Ignition Type
  • Digital CDI with Variable Timing
  • Dimensions (L x W x H)
  • 16 x 16.25 x 17.25 in.
  • Starting Type
  • Electric Start
  • Charging System
  • 20 Amp
  • Oil Capacity
  • 2.1 Qts
  • Dry Engine Weight
  • 97 lbs.
  • Shaft Type
  • Keyed - Straight
  • Shaft Diameter
  • 1" Diameter, 1/4" Keyway
  • Shaft Length
  • 2-7/8"
  • Shaft I.D. Thread Size
  • 3/8"-24 Drilled and Tapped
  • Bolt Pattern
  • 4 Bolt
  • Oil System
  • Pressure lubrication, Oil Alert
  • Reduction Type
  • None
  • Engine Cooling Type
  • Forced Air Cooling
  • PTO shaft Rotation
  • Counterclockwise (from PTO shaft side)
  • Governor System
  • Centrifugal Mass Type
  • Air cleaner
  • Dual Element
  • Features
  • 3-Year Limited Warranty
  • Remote Throttle and Choke
  • Two barrel inner-vent carburetor for more precise fuel metering
  • Cast Iron Sleeve
  • Smooth Performance
  • Easy to Use and Maintain
  • Simple throttle control
  • Easy, convenient, heavy duty control box
  • Easily accessible spark plug
  • Easy Starting
  • Hemispherical combustion chamber delivers rapid combustion
  • Automatic mechanical de-compression system
  • Emissions Compliant
  • Lower emissions, same power output!
  • CARB and EPA certified
  • No catalyst necessary
  • 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
  • Precision engineered components result in lower vibration
  • Ball bearing supported crankshaft for greater stability
  • Exceptionally Quiet
  • Carburetor Butterfly
  • Pressure fed crankshaft bearings
  • 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
  • New carburetor chamber coating and carburetor filter help to protect against fuel impurities
  • Dual element air cleaner
  • Fuel Valve
  • Cross Reference Guide
  • Kohler: CH640
  • Briggs & Stratton: 386447
  • Accessories
  • User Manual

Related accessories & parts:
Pack of 4 Opti-4 10W30 34 oz bottle for engines up to 31hp Genuine Honda Side Mount Muffler — Fits Some GX630, GX690 Engines V2MFLRSIDE, 660890. Requires Honda OEM Base Oil Filter 15410-Z6L-800 Genuine Honda OEM Base Oil Filter 15410-Z6L-800 Genuine Honda OEM Air Filter 17210-Z6L-010
Sale Price: $79.95

Sale Price: $212.00

Sale Price: $149.00

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Opti-4 10W30 34 oz bottle for engines up to 31hp 43121 Honda Side Mount Muffler Fits Some GX630 Engines V2MFLRSIDE Honda OEM Base Oil Filter 15410-Z6L-800 Honda 17210Z6L010 Air Filter
Genuine Honda Muffler Kit, Left Mount, Muffler Vents to the Starter Side of the Engine V2MFLRHIL, 660870 Genuine Honda OEM Oil Filter 15400-PLM-A01PE, 15400-PLM-A02PE Genuine Honda Muffler Kit, Right Mount, Muffler Vents to the Oil Filter Side of the Engine V2MFLRHIR, 660880
Price: $229.95

Sale Price: $11.99

Price: $229.95

Honda Muffler Kit, Left Mount V2MFLRHIL Honda 15400PLMA01PE Oil Filter Honda Muffler Kit, Right Mount V2MFLRHIR

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