Zongshen 250cc Water-cooled Tricycle Engine

The Zongshen 250cc water-cooled tricycle engine(Model:ZS170MM/CB250/SP250)is a high-performance,heavy-duty single-cylinder power unit purpose-built for cargo three-wheelers.Engineered by Chongqing Zongshen,a leading Chinese powertrain manufacturer,it combines reliable water-cooling technology with robust 4-stroke design to deliver stable power,low fuel consumption,and exceptional durability under continuous heavy-load operation.

Core Specifications

Engine Type:Single-cylinder,4-stroke,water-cooled,overhead camshaft(OHC)

Displacement:246.3cc

Bore×Stroke:70mm×64mm

Compression Ratio:10.0:1–10.5:1

Max.Power:11.5kW/7,000rpm(15.6HP)

Max.Torque:19.5N·m/5,000rpm

Ignition:CDI(Capacitor Discharge Ignition)

Starting System:Electric start+kick start(dual-mode)

Lubrication:Pressure&splash combined

Transmission:5-speed forward+1 reverse(manual clutch)

Net Weight:35.5kg

Fuel Consumption:≤354g/kW·h

Cooling System:Efficient closed-loop water cooling with radiator

Certifications:CCC,ISO 9001

Key Features&Advantages

Superior Water-cooling Performance

Closed-loop water cooling maintains optimal operating temperature,effectively preventing overheating during long-haul heavy-duty use.This design significantly extends engine lifespan,improves reliability in high-temperature environments,and ensures consistent power output.

Heavy-duty Power&Torque

Optimized combustion chamber and intake-exhaust system deliver strong low-end torque(19.5N·m at 5,000rpm),ideal for tricycle cargo applications.The engine provides excellent climbing ability and load-carrying capacity,suitable for urban,rural,and mountainous road conditions.

Durable&Reliable Construction

Built with high-strength alloy cylinder,forged crankshaft,and precision bearings to withstand prolonged heavy loads.Advanced wear-resistant components and strict quality control ensure minimal maintenance and long service life.

Dual Starting System

Electric start for effortless,quiet operation;backup kick start ensures reliability in cold weather or battery low conditions.

Fuel-efficient&Eco-friendly

Optimized fuel injection and combustion system reduce fuel consumption and emissions,meeting strict environmental standards while lowering operating costs.

Easy Installation&Compatibility

Standardized mounting dimensions and interface design ensure seamless fit for most 250cc cargo tricycles.Compatible with Zongshen,Dayang,and other major tricycle chassis.

Applications

Widely used in heavy-duty cargo tricycles,agricultural three-wheelers,urban delivery vehicles,and small freight transport.Perfect for markets in Asia,Africa,Latin America,and other regions demanding reliable,cost-effective cargo mobility solutions.