Rated Power: 125 HP @ 2500 RPM
Peak Torque: 410 N.m @ 1500 RPM
Fuel Pump: HPCR
Aspiration: TC & Charge Air Cooled
Emission Standard: EURO IV
DCEC ISB3.9S4 Automotive Engine
DCEC ISB3.9S4 series automotive engine is four-strokes engine with 102 mm bore and 120 mm stroke, Equipped with Bosch (or BYC or Weifu) pump. engine comes with turbocharger and Air- Air intercooler. The prime power range is from 123 HP to 158 HP.
As part of EMAC, DuraMac provides complete powertrain that integrated with DCEC engine, Fast-Eaton clutch, FAST-CAT transmission, Dongfeng-DANA axle and Komman air suspension, while the electrification of automobile is the certain future, Duramac also get involved with EV powertrain system. We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.
DCEC ISB3.9S4 series electronic automotive engine can reach upto EU Stage VI emission standard, the number 30/40/50/60 are the emission standard mark of engine, which means engine emission standard are EU Stage III, IV, V, VI. For different emission standard DCEC ISB3.9S4 electronic series automotive engine, the engine itself are the same, the major different are the after-treatment system and ECU program, EMAC will keep updating products introduction page of different emission standard version engines, welcome to subscribe our website to get latest update information.
If you are in need of engine model that not available on our website for the moment, please contact EMAC sales team for technical details and related documents, our well trained sales and engineering team will help you with all products and techical documents available here at DCEC.
General Specifications of ISB3.9S4 Series
| Engine Type: | 6 Cylinders |
| Displacement: | 3.9 L |
| Bore * Stroke: | 107 mm * 124 mm |
| Advertised Power: | 123 – 158 HP @ 2500 RPM |
| Peak Torque: | 410 – 450 N.m @ 1500 – 2500 RPM |
| Rated Speed: | 2500 RPM |
| Emission Standards: | Euro III |
| Aspiration Method: | Turbocharged & Charge Air Cooled |
| Wet Weight: | 890 kg |
| Fuel System: | Denso HPCR |
Cummins China Engine
Cummins have 6 50:50 joint venture engine plants in China partnershipped with different Chinese automotive or equipment manufacturers, including DCEC-Dongfeng Cummins, CCEC-Chongqing Cummins, BFCEC-Beijing Foton Cummins, XCEC-Xi'an Cummins, GCIC-Guangxi Cummins, APCL-Anhui Cummins. EMAC Power is working with all of these engine plants, providing customers full ranges of customize engine power pack with all of Cummins engines produced in China.
Fast Gear
The F6A Series Automated Transmission uses the FAST automatic transmission, has six front gears, the transmission ratio step arrangement is reasonable, has very outstanding fuel economy. Adopt hydraulic automatic transmission. The F6A Series Automated Transmission has six gears, each with a different reduction ratio.
EV Truck
Electric wheel dump trucks use electricity as a power source, completely abandoning traditional fuel engines. This change enables the vehicle to achieve true “zero emissions” during operation, without the emission of pollutants such as carbon monoxide, nitrogen oxides, and particulate matter in the exhaust gas, greatly reducing the pollution to the atmospheric environment.
DANA Axle
Applying the advanced technology of DANA with high efficiency, fuel economy, strong load torque, low noise,high reliability, lower procurement cost, low repair cost and lower maintenance cost.
Datong Gear
The Datong HW25712XSJ Heavy Manual No-Sync Gearbox has a torque of 2500 N.m, a gear ratio range of 14.941-1, an oil capacity of 13 L (13.5 L when equipped with a power take-off), an overall length of 993 mm, and a weight of 428 kg.
Crane Trucks
The DFZ5258JSQSZ6D truck crane is a powerful and versatile vehicle designed for efficient lifting and transportation tasks. Equipped with a YCS06300-61 engine and a Shaanxi Auto Fast gear : 10JS120TA high-low gear with synchronizer、PTO gearbox, it provides strong and stable power for demanding operations.
All Wheel Drive Off-road Chassis
Dongfeng Special Vehicle's all-wheel-drive off-road chassis series, developed based on military technology platforms, supports 4×4/6×6 drive configurations and delivers exceptional cross-country capability, high reliability, and strong environmental adaptability. DuraMac provides customized off-road solutions, with products widely applied in high-altitude rescue, wilderness exploration, special transport, and military applications, meeting the demands of both domestic and international specialty vehicle markets.
Medium & Heavy-duty Truck
DuraMac offers a full range of Dongfeng solutions for medium-to-heavy-duty trucks, covering diesel, pure electric, and hydrogen fuel cell powertrains. Its pure electric trucks feature high-energy-density batteries and electric drive systems with dual-gun fast charging capability, ensuring high operational efficiency. Hydrogen-powered heavy-duty trucks are equipped with an intelligent VCU control system and offer multiple power variants. All products utilize high-strength chassis and IP68-rated electrical systems, meeting diverse operational demands across engineering transport, port logistics, and urban distribution.
Engine Model | Rated Power | Peak Torque | Engine Model | Rated Power | Peak Torque | ||
| ISB3.9-125E40A | 123 HP @ 2500 RPM | 410 N.m @ 1500 RPM | ISB3.9-140E40A | 136 HP @ 2500 RPM | 450 N.m @ 1500 RPM | ||
| ISB3.9-160E41A | 158 HP @ 2500 RPM | 450 N.m @ 2500 RPM | |||||
| ——END—— | |||||||
DCEC ISB3.9S4 Series Automotive Engine
This is the list of all series of DCEC ISB3.9S4 Series Automotive Engine.
Click here to find automotive engines by type (Fuel System & Emission Standard).
ISB3.9-140E40A Automotive Engine
Rated Power: 136 HP @ 2500 RPM
Peak Torque: 450 N.m @ 1500 RPM
Fuel Pump: HPCR
Aspiration: TC & Charge Air Cooled
Emission Standard: EURO IV
ISB3.9-160E41A Automotive Engine
Rated Power: 160 HP @ 2500 RPM
Peak Torque: 450 N.m @ 2500 RPM
Fuel Pump: HPCR
Aspiration: TC & Charge Air Cooled
Emission Standard: EURO IV
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