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CA6SM3 series natural gas engine
CA6SM3 series natural gas engine — 12.5 L inline-6 NG engine with 260–320 PS output, torque up to 1500 Nm, low fuel consumption, reduced emissions and stable operation for heavy-duty trucks and buses.
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The main technical parameters
Five characteristics of high possibility, low fuel consumption, high efficiency, low maintenance, and high power are industry-leading
| Project | Model | CA6SM3-35E6N | CA6SM3-38E6N | CA6SM3-40EGN | CA6SM3-42E6N | CA6SM3-44E6N | CA6SM3-47E6N |
| Displacement | L | 12.5 | |||||
| Rated power/speed | Ps/r/min | 350/1900 | 380/1900 | 400/1900 | 420/1900 | 440/1900 | 470/1900 |
| Max torque/speed | N·m/r/min | 1800/1000-1300 | 1900/1000-1300 | 1900/1000-1300 | 1900/1000-1300 | 20001000-1300 | 21001100-1300 |
| External Characteristics Minimum Fuel Consumption Rate | g/kW·h | 195 | |||||
| Noise | dB | ≤96 | |||||
| Emission route | Equivalent Combustion+EGR+TWC | ||||||
| Overall Dimensions (length, width and height) | mm | 1402×898×1174 | |||||
| Engine mass (excluding aftertreatment) | kg | 1050 | |||||
Super power
High torque at low speed, the maximum torque is reached at 1000rpm, the power is surging, and you can do whatever you want. Optimized and calibrated low-speed and medium-speed external characteristics and transient response, the vehicle starts more quickly and has a more sensitive response.
Energy efficient
A new generation of BOSCH electronic control system, high squeezing flow equivalent combustion technology, high mixing uniformity ventilation technology, and high-efficiency electronically controlled pressurized air intake technology, save 2-3 kilograms of gas consumption per 100 kilometers compared to competing products, and save 100,000 kilometers per year 14,000 yuan.
Extra long oil change
The 60,000-kilometer-long oil change has been comprehensively upgraded to reduce maintenance frequency and improve attendance.
Reliable and durable
High-strength steel pistons, super-wear-resistant steel crankshafts and special natural gas piston rings ensure longer engine life and more money.
The CA6SM3 series natural gas engine is engineered as a high-efficiency, heavy-duty power unit designed to meet Euro V emission requirements. As a reliable CA6SM3 series natural gas engine, it is built on a 12.5-litre, 6-cylinder inline configuration, delivering steady combustion and durable continuous output. Power ratings range from 260 to 320 PS, while maximum torque reaches 1500 Nm, enabling strong traction for large commercial vehicles operating on challenging routes or long-distance corridors.
This engine adopts an electronically controlled gas-injection system that enhances fuel-air mixing, resulting in cleaner combustion and reduced particulate formation. Its design helps lower running costs while maintaining consistent thermal efficiency. A reinforced crankshaft structure and optimized cooling layout are also applied to improve stability at high load, making the engine well suited for trucks, logistics fleets, and intercity buses that require dependable operation throughout extended service hours.
The CA6SM3 series natural gas engine is further supported by noise-management features and protective monitoring systems that guard against knock, overheating and gas-system irregularities. With a balanced combination of output strength, environmental performance and operational economy, the CA6SM3 series stands as an appealing choice for buyers seeking a compliant and future-ready natural-gas power solution for modern commercial vehicles.
Get a Quote for CA6SM3 Series Natural Gas Engine
Factory-direct pricing from the exclusive FAWDE export distributor. We reply within 12 hours.