Inventory Unit Detail
Honda Engines GX390-HA
Incoming
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Overview
Availability
Incoming
LocationAll Season Cycle
Primary ColorRed
VIN
N2021GX390HA
Condition
Excellent
Product Features
Dealer Notes
6:1 Reduction, Straight 1" x 2-5/32", 1/4" Keyway
Description
The Next Generation of GX Engines.
With the GX340, you're looking at one of the best engines in the business. More power. Quieter performance. Lower fuel consumption. Lower emissions. Better features. Exceptional performance. Honda's GX series lives up to the legend, and then some.
Common Applications
- Pressure washers
- Commercial lawn and garden equipment
- Tillers / cultivators
- Generators
- Forestry equipment
- Construction / industrial equipment
- Agricultural equipment
- Small vehicles
- Water pumps
Fuel Efficient, High Output Operation
- Digital CDI ignition system with variable timing
- Increased compression ratio
- Precision camshaft design offers precise valve timing and optimal valve overlap for better fuel efficency
- OHV design for increased efficiency and optimal power transfer
Smooth Performance
- Precision engineered components result in lower vibration
- Heavy duty balancer shaft
- Ball bearing supported crankshaft for greater stability
- Improved piston design
Exceptionally Quiet
- Large capacity, multi-chamber exhaust system
- Improved camshaft and muffler reduce overall engine noise by up to 5 dB
- Reduced mechanical noise due to piston design
- Forged steel crankshaft and rigid crankcase
- Helical cut gears
- Sophisticated air intake system
Proven Reliability
- Cast iron cylinder sleeve
- Oil Alert
- High quality materials, fit, and finish
- Fuel Valve
- Dual element air cleaner
- 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
- Variable ignition timing
Emissions Compliant
- CARB and EPA certified
- No catalyst necessary
Available Options
- Low profile versions
- Gear reduction options
- Electic start
- Spark arrester available
- Charge and lamp coils with multiple output options available
- Cyclone Air Cleaner available
Specifications
- Engine Type: Air-cooled 4-stroke OHV
- Bore x Stroke: 88 X 64 mm
- Displacement: 389 cm3
- Net Power Output*: 11.7 HP (8.7 kW) @ 3,600 rpm
- Net Torque: 19.5 lb-ft (26.4 Nm) @ 2,500 rpm
- PTO Shaft Rotation: Counterclockwise (from PTO shaft side)
- Compression Ratio: 8.2:1
- Lamp/Charge coil options: 25W, 50W / 1A, 3A, 10A, 18A
- Carburetor: Butterfly Float Type
- Ignition System: Digital CDI with variable timing
- Starting System: Recoil/electric
- Lubrication System: Splash
- Governor System: Centrifugal Mass Type
- Air Cleaner: Dual element
- Oil Capacity: 1.16 US qt (1.1 L)
- Fuel Tank Capacity: 6.4 U.S. qts (6.1 liters)
- Fuel: Unleaded 86 octane or higher
- Dry Weight: 69 lb (31.5 kg)
Dimensions
- Length (min): 16.0" (407 mm)
- Width (min): 19.1" (485 mm)
- Height (min): 17.7" (449 mm)
PTO
- E type: Tapered shaft
- H type: Reduction type PTO
- L type: Reduction type PTO
- P type: Threaded type (SAE)
- Q type: Straight shaft
- R type: Reduction type PTO
- V type: Tapered shaft
Engine
Engine Type | Air-cooled 4-stroke OHV |
Bore x Stroke | 88 x 64 mm |
Displacement | 389 cm3 |
Compression Ratio | 8.2:1 |
Horsepower | 11.7 hp (8.7 kW) @ 3,600 rpm |
Torque | 19.5 lb.-ft (26.4 Nm) @ 2,500 rpm |
Fuel Capacity | 6.4 U.S. qt. (6.1 L) |
Starting System | Recoil/electric |
Dimensions
Length | 16.0 in. (407 mm) |
Width | 19.1 in. (485 mm) |
Height | 17.7 in. (449 mm) |
Weight | 69 lb. (31.5 kg) |
Shopping Tools
Quote by Phone

Honda Engines GX390-HA
(866) 362-8100
All Season Cycle
904 2nd Street West Box 1029 |
Brooks
AB
T1R 1B8
Canada
- Summer Hours Open Close
- Monday - Friday: 8:30 a.m. 5:30 p.m.
- Saturday: Closed
- Sunday: Closed
- Winter Hours Open Close
- Monday - Friday: 8:30 a.m. 5:30 p.m.
- Saturday: Closed
- Sunday: Closed
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