- Honda 389cc GX OHV air-cooled, 4-stroke, horizontal engine
- Fuel efficient, high-output operation with precision camshaft design and a high compression ratio
- OHV design delivers increased efficiency and optimal power transfer
- Digital CDI ignition system with variable timing
- Smooth performance and reduced vibration from precision-balanced crankshaft and reduced piston weight
The Honda 389cc 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.
| Manufacturer's Warranty |
3 year limited warranty |
| Ship Weight |
90.0 lbs |
| Engine Displacement (cc) |
389 |
| Engine Type |
GX series OHV commercial-duty |
| Shaft Diameter (in.) |
1 |
| Shaft Length (in.) |
3 31/64 |
| Net Power Output (HP) |
13 |
| Start Type |
Electric w/recoil backup |
| Application |
Pressure washer, compressor |
| Net Torque (lbs./ft.) |
19.5 (26.4 Nm) at 2,500 RPM |
| Shaft Output |
Horizontal |
| Crankshaft |
Q-type |
| Shaft Keyway (in.) |
1/4 |
| Shaft End Tapped (Diameter (in.)/Threads per inch) |
3/8–24 |
| Shaft Rotation (From PTO Shaft Side) |
Counterclockwise |
| PTO Height (in.) |
5 1/4 |
| Cylinders (qty.) |
1 |
| Cylinder Bore |
Cast iron |
| Bore x Stroke (in.) |
3.5 x 2.5 |
| Compression Ratio |
8.2:1 |
| Cooling System |
Air cooled |
| Air Cleaner Type |
Dual element |
| Fuel Tank |
Standard (White) |
| Fuel Type |
Gasoline |
| Fuel Tank Capacity (qt.) |
6.4 |
| Fuel Filter |
Fuel tank filler neck strainer |
| Oil Capacity (qt.) |
1.16 |
| Lubrication System |
Forced splash |
| Low Oil Alert |
Yes |
| Low Oil Shutdown |
Yes |
| Ignition System |
Electronic |
| Governor System |
Centrifugal mechanical |
| Carburetor |
Float, external vent |
| Throttle Control |
Remote (wire) |
| Choke Control |
Manual |
| Max. RPM |
3,600 |
| Charging System Amps |
10 |
| Muffler Included |
Silent, exhaust pipe protector, deflector |
| Auto Compression Release |
Yes |
| EPA/CARB Approval (California Air Resource Board) |
Yes |
| Bolt Circle (in.) |
5, 6 1/2 |
| Mounting Base L x W (in.) |
7 11/16 x 3 25/64–4 1/16 |
| Dimensions L x W x H (in.) |
15 7/8 x 17 11/16 x 17 3/8 |
