Honda GX120 OHV, Horizontal Shaft Standard Engine

Honda GX120 OHV, Horizontal Shaft Standard Engine with Recoil Start, 3.5 HP

The AEGX120K1QX Honda GX120 OHV Horizontal Shaft Engine is a compact, reliable workhorse engine built for demanding commercial and residential applications where consistent performance matters. Delivering 3.5 HP of dependable power, this engine features Honda’s overhead valve (OHV) design for improved efficiency and cooler operation, along with a precision-engineered 3/4" crankshaft with keyway for secure equipment integration. With a recoil start system and Honda’s reputation for easy starting and long life, this engine is ready to power everything from pressure washers to small equipment—without putting up a fight every time you pull the cord.

Country of Origin
Varies by production batch

Key Features / Specifications

• Model / Part Number: AEGX120K1QX
• Brand / Series: Honda GX Series
• Engine Type: 4-stroke, OHV (Overhead Valve), horizontal shaft
• Horsepower: 3.5 HP
• Displacement: 118cc
• Starting System: Recoil start
• Crankshaft: 3/4" diameter with keyway
• Fuel Type: Gasoline
• Cooling System: Forced air cooling
• Design Advantage: OHV layout for improved fuel efficiency and reduced operating temperatures
• Build Quality: Heavy-duty components for extended service life
• Mounting: Standard horizontal shaft configuration for wide equipment compatibility
• Reputation: Honda GX engines known for reliability, easy starting, and low vibration

Ideal For

• Powering pressure washers, water pumps, generators, and small construction equipment
• Equipment requiring a compact horizontal shaft engine with a 3/4" keyed output
• Users needing consistent, easy starting performance in the field
• Applications where fuel efficiency and durability are critical
• Anyone who prefers an engine that starts when you ask it to—not after a motivational speech and three arm workouts