Honda GX160-QX2 4.8HP 163cc Engine – 3/4in Shaft
For repower jobs, Honda GX160-QX2 produces 4.8 horsepower. A 163cc block backs up the output, and torque peaks at 10.3 Nm. A 3-year warranty backs the build. It's built for construction equipment and water pumps.
- Puts out 4.8 horsepower reliably
- The 163cc block handles the load
- Pulls 10.3 Nm of torque at peak
- A 3/4in horizontal shaft, standard mount
- Recoil pull gets it running fast
Description
Prevent sudden drive stalls using the Honda GX160-QX2 horizontal shaft engine on commercial construction and utility equipment. Heavy equipment loads like water pumps and plate compactors create severe continuous resistance that overheats standard utility motors. This 163cc 4.8HP engine features an overhead valve design and a forged steel crankshaft that withstand high radial belt loads and sudden torque spikes on demanding jobsites.
An oversized cast-iron cylinder sleeve protects bore roundness against abrasive construction dust, keeping ring tension tight over hundreds of run hours. Dual ball bearings support the 3/4-inch output shaft, reducing side-load wear on crankcase oil seals. Splash lubrication spreads oil across internal moving parts, while a dual-element air cleaner keeps concrete dust and grading grit out of the intake tract.
Key Engineering Features of Honda GX160-QX2
- 163cc Single-Cylinder OHV Block: Delivers 4.8 net horsepower to power heavy utility and construction machinery.
- 3/4-Inch Straight Keyed Shaft: Standard industrial diameter matches direct-drive pump couplings, centrifugal clutches, and drive pulleys.
- Dual Ball Bearing Crankshaft Support: Absorbs high radial belt tension to prevent crankshaft seal leaks and shaft deflection.
- Durable Cast-Iron Cylinder Sleeve: Resists bore wear from abrasive grit to extend engine life in harsh working conditions.
- Dual-Element Commercial Air Cleaner: Combines an oiled foam pre-cleaner with a paper filter element to trap fine dust.
- Mechanical Automatic Decompression: Reduces pull-cord resistance so operators start equipment quickly in cold weather.
- Honda Oil Alert Cutoff Switch: Shuts down ignition when sump levels drop, avoiding catastrophic block seizure.
- Large-Capacity Crankcase Oil Sump: Maintains oil cooling capacity across continuous full-throttle industrial duty cycles.
Fleet Productivity & Cost of Ownership
Engineered for high-torque construction equipment, this 163cc engine combines heavy cast metallurgy with maintenance-reducing features.
- Cast-iron cylinder lining and thick crankcase casting prevent thermal distortion during continuous equipment operation.
- Low fuel consumption rates and extended oil service intervals reduce machine operating costs across rental fleets.
- Rental equipment operators and general contractors gain dependable power for plate compactors and concrete equipment.
Chassis Compatibility & Repower Mounting
Weighing 33 pounds dry with an industry-standard 4-bolt horizontal mounting pattern and a 3/4-inch output shaft, this unit drops directly onto portable cement mixers, vibratory plate compactors, trash pumps, and agricultural transfer pumps.
Factory Warranty & Maintenance Guidelines
- Commercial fleet operators receive 3-Year limited factory warranty coverage against component defects.
- Residential and estate owners receive 3-Year complete consumer warranty protection.
Drain engine oil after the initial 20 operating hours, then service every 100 hours with SAE 30 or 10W-30 oil. Inspect the air filter weekly on dry grading sites, and maintain spark plug gaps at 0.028 to 0.031 inches. Order the Honda GX160-QX2 horizontal shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Honda GX160-QX2 Technical Specs
| Brand | Honda |
| Full Model Code | GX160-QX2 |
| Displacement | 163 cc |
| Bore x Stroke | 68 x 45 mm |
| Maximum Output | 3.6 kW (4.8 HP) @ 3600 RPM |
| Maximum Torque | 10.3 Nm @ 2500 RPM |
| Start System | Recoil Start |
| Ignition System | Transistorized Magneto |
| Shaft Specification | 3/4" (19.05 mm) Straight Keyway |
| Fuel Tank Capacity | 3.1 Liters |
| Oil Capacity | 0.58 Liter / SAE 10W-30 |
| Dry Weight | 15.1 kg |
| Standard Warranty | 3 Years Professional |
| Primary Application | Construction Equipment, Water Pumps, Industrial Gear |












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