Details
Dongfeng Cummins EQB170-20 Complete Engine Assembly
When evaluating power solutions for medium-duty commercial transport, the Cummins EQB170-20 diesel engine stands out for its straightforward mechanical reliability. Manufactured by DCEC (Dongfeng Cummins Engine Co., Ltd.), this 5.9L, 6-cylinder powerplant delivers a dependable 125kW (170 HP) at 2500 RPM. Designed to meet Euro II emission standards, it remains a highly sought-after replacement engine for trucks and buses operating in regions where robust, easy-to-maintain mechanical systems are preferred over complex electronics.
Tech Specs of Cummins EQB170-20
General Engine Data
Engine Model: Cummins EQB170-20
Type: 6 Cylinders in Line
Displacement: 5.9 L
Bore * Stroke: 102 * 120
Net Weight (with flywheel & alternator): 407 Kg
Overall Dimension: 1026mm*699mm*912mm
Key Performance Data
Rated Power: 125 kW/170HP
Rated Speed: 2500 rpm
Max Torque/Speed: 560 N.m @ 1500 rpm
Fuel Consumption @ Rated Power: 238 g/Kw.h
Max. No-load Governed Speed: 2750 rpm
Idle-Speed: 750 rpm
Max Continuous Running Altitude: 3000 m
More Technical Data
Certification: Euro II
Aspiration: Turbocharged & Intercooled
Fuel System: Wuxi Weifu Pump
Compression Radio: 17.3:1
Electrical System (Starter Motor/Alternator): 12V (500A)/24V (250A)
Lowest Starting Temp Without auxiliary system: -10℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 9.0 L
Technical Advantages: EQB170-20 vs. Similar Cummins 6BT 5.9 Models
A common point of confusion among buyers is distinguishing the EQB170-20 from other variants in the Cummins B series 170HP engine family, specifically the classic Cummins 6BT5.9-C170.
While they share the foundational 102x120 mm bore and stroke and the 5.9-liter displacement, the EQB designation specifically points to the automotive/vehicle engine tuning developed under the Dongfeng Cummins joint venture. The EQB170-20 is optimized for on-highway drivability, featuring specific governor settings on the mechanical fuel injection engine to manage RPMs smoothly during gear shifts in commercial trucks and buses.
Conversely, a standard 6BT5.9 is often configured for industrial or construction applications, where it runs at a constant speed. Installing an industrial-tuned 6BT into a commercial bus will result in poor throttle response and drivability issues. Therefore, ensuring you have the correct DCEC EQB170-20 engine identification and serial number is crucial when sourcing a replacement.
Understanding Your Purchase: Cummins EQB170-20 Long Block vs Complete Engine Assembly Price
As an original Cummins EQB170-20 engine supplier, HekoPower provides options tailored to your repair scope. The price and installation time vary significantly between configurations.
A Cummins EQB170-20 long block includes the core engine block, cylinder head, and internal rotating assembly (crankshaft, pistons, camshaft). It is a cost-effective route if your existing external accessories—like the turbocharger, Wuxi Weifu pump, and starter—are still in excellent condition.
However, many clients opt for the EQB170-20 complete diesel engine assembly. This "power pack" includes all fuel system components, the cooling system, and electrical accessories. For a commercial bus or truck replacement engine, a complete assembly drastically reduces shop downtime and ensures that all components, from the injectors to the water pump, are factory-new and correctly calibrated.
Installation and Replacement Compatibility Tips
Before you buy a Cummins EQB170-20 engine, verifying installation dimensions and weight is essential for a smooth swap. The engine weighs approximately 407 kg (dry weight), which requires standard heavy-duty shop hoists.
When planning the EQB170-20 engine replacement compatibility, pay close attention to the engine mounts and the flywheel housing SAE rating. While the core Cummins EQB170-20 engine dimensions are standard across the 5.9L block, the specific bell housing required can vary depending on the transmission fitted to your Dongfeng truck or commercial bus. Always consult the EQB170-20 engine specification sheet regarding your specific vehicle chassis before ordering.
Furthermore, when replacing an older, tired engine, we highly recommend flushing the entire vehicle fuel system before connecting it to the new mechanical pump, as debris from old lines is a leading cause of premature fuel system failure in new installations.
Frequently Asked Questions (FAQ)
Where can I find the EQB170-20 engine serial number?
The engine serial number (ESN) is typically stamped on the data plate located on the timing gear cover or the intake manifold side of the cylinder block. This number is vital for verifying parts compatibility.
Does the Euro 2 Cummins EQB170-20 require DEF (AdBlue)?
No. A major advantage of this Euro II DCEC EQB170-20 engine is that it achieves its emission targets through internal combustion efficiency and mechanical timing, without the need for complex aftertreatment systems like DEF/AdBlue or DPFs.
Are you a genuine DCEC EQB170-20 engine supplier?
Yes, HekoPower acts as a Cummins EQB170-20 engine exporter and wholesale supplier, providing authentic DCEC assemblies and parts to global clients.
Understanding the specific requirements of your vehicle is key to selecting the right power solution. While the EQB170-20 is a highly versatile option, the DCEC factory produces a wide range of power outputs within this family to suit varying payload demands. DCEC WQB Series, original products from Dongfeng Cummins Engine Plant (DCEC), Cummins Joint Venture Plant since 1986, 50% shareholding by Cummins USA. This series mainly includes EQB125-20, EQB140-20, EQB160-20, EQB170-20, EQB180-20, EQB190-20, EQB210-20, EQB235-20.
