QSB5.9 Electronic Common Rail Diesel Engine for Construction, Generator & Marine Use
The QSB5.9 is a fully electronic, high-pressure common rail diesel engine developed from the legendary 6BT platform.
Known for outstanding durability, fuel efficiency, and wide application coverage, it is widely used in construction machinery, generator sets, marine, and industrial equipment.
Technical Specifications
QSB5.9 Engine Models
| Model | Rated Power (kW@rpm) | Max Torque (N·m@rpm) |
|---|---|---|
| QSB5.9-C130-30 | 97 @ 2200 | 650 @ 1500 |
| QSB5.9-C150-31 | 113 @ 2200 | 690 @ 1500 |
| QSB5.9-C160-30 | 119 @ 2200 | 720 @ 1500 |
| QSB5.9-C170-30 | 125 @ 2200 | 750 @ 1500 |
| QSB5.9-C180-31 | 132 @ 2400 | 800 @ 1500 |
| QSB5.9-C180-33 | 133 @ 2200 | 800 @ 1500 |
| QSB5.9-C180-34 | 133 @ 2000 | 770 @ 1400 |
| QSB5.9-C190-31 | 142 @ 2200 | 800 @ 1500 |
| QSB5.9-C210-30 | 154 @ 2200 | 800 @ 1400 |
The QSB5.9 diesel engine represents the perfect evolution of the classic mechanical 6BT engine, combining its proven mechanical strength with advanced high-pressure common rail (HPCR) fuel injection and full electronic control.
Featuring an inline 6-cylinder configuration, a displacement of 5.9 liters, and a robust cast-iron structure with wet cylinder liners, the QSB5.9 delivers excellent reliability, long service life, and superior performance under heavy-duty operating conditions.
Designed to meet modern emission requirements, the QSB5.9 has become a mainstream transition engine for upgrading construction machinery, generator sets, and marine applications from mechanical to electronic systems.
Key Technical Features
-
High Pressure Common Rail Fuel System
Higher injection pressure ensures better fuel atomization, improved combustion efficiency, and reduced fuel consumption. -
Full Electronic Control (ECM)
Precise control of injection timing and quantity, with comprehensive diagnostics and engine protection functions. -
Legendary 6BT Structural Heritage
Cast iron block, cylinder head, and wet liners ensure exceptional durability and long overhaul intervals. -
Wide Installation Compatibility
Mature installation packages allow easy integration into various equipment platforms.
Key Advantages
-
Wide Power Output Range
Rated power typically ranges from 129 to 186 kW (approx. 175–250 HP), with higher ratings available for special applications. -
Strong Low-Speed Torque
Maximum torque ranges from 700 to 1000 N·m, delivering excellent pulling power at low RPM. -
Excellent Fuel Economy
Benchmark-level fuel efficiency within the same class. -
Low Noise & Vibration
Electronic control and optimized combustion significantly reduce NVH. -
Global Service & Parts Support
Extensive worldwide service network ensures low operating and maintenance costs.
Core Applications
-
Construction Machinery (Largest Market)
Medium excavators, loaders (e.g. ZL50 class), bulldozers, graders, cranes, air compressors, power units -
Power Generation
Prime power for data centers, hospitals, factories, and standby generator sets -
Agricultural Machinery
Large tractors, harvesters -
Marine Applications
Commercial fishing vessels, inland waterway transport boats, workboats -
Special Vehicles
Fire trucks, mining vehicles, airport shuttle buses -
Non-Road Trucks & Buses
Special chassis and off-road applications
Emission Compliance
Designed to meet US EPA Tier 3 / Tier 4i and EU Stage IIIA emission standards, making it one of the most popular engines for emission upgrade projects.
Technical Specifications
QSB5.9 Engine Models
| Model | Rated Power (kW@rpm) | Max Torque (N·m@rpm) |
|---|---|---|
| QSB5.9-C130-30 | 97 @ 2200 | 650 @ 1500 |
| QSB5.9-C150-31 | 113 @ 2200 | 690 @ 1500 |
| QSB5.9-C160-30 | 119 @ 2200 | 720 @ 1500 |
| QSB5.9-C170-30 | 125 @ 2200 | 750 @ 1500 |
| QSB5.9-C180-31 | 132 @ 2400 | 800 @ 1500 |
| QSB5.9-C180-33 | 133 @ 2200 | 800 @ 1500 |
| QSB5.9-C180-34 | 133 @ 2000 | 770 @ 1400 |
| QSB5.9-C190-31 | 142 @ 2200 | 800 @ 1500 |
| QSB5.9-C210-30 | 154 @ 2200 | 800 @ 1400 |
General Specifications
-
Engine Series: Cummins B Series (Electronic Version)
-
Engine Type: Inline 6-cylinder, 4-stroke
-
Displacement: 5.9 L
-
Bore × Stroke: 102 mm × 120 mm
-
Aspiration: Turbocharged & Aftercooled
-
Fuel System: High Pressure Common Rail (HPCR)
-
Control System: Full Electronic Control (ECM)
-
Cooling System: Water-cooled
-
Application: Construction, Generator, Marine, Agriculture
Multiple power ratings, emission configurations, and OEM solutions are available.
Contact us now for price, lead time, and technical support.
| Model |
QSB5.9-C130-30 ,QSB5.9-C150-31 ,QSB5.9-C160-30 ,QSB5.9-C170-30 ,QSB5.9-C180-31 ,QSB5.9-C180-33 ,QSB5.9-C180-34 ,QSB5.9-C190-31 ,QSB5.9-C210-30 |
|---|---|
| Rated Power (kW@rpm) |
113@2200 ,119@2200 ,125@2200 ,132@2400 ,133@2000 ,133@2200 ,142@2200 ,154@2200 ,97@2200 |
| Max Torque (N·m@rpm) |
650@1500 ,690@1500 ,720@1500 ,750@1500 ,770@1400 ,800@1400 ,800@1500 |
| Series |
B Series |
Quality Assurance & Compliance
Warehouse Storage
Faq
A: Our company's core businesses cover the entire process of diesel engine development, assembly, modification, maintenance, and testing; the production and R&D of explosion-proof engines; the supply of Cummins spare parts, as well as overhaul and testing services, etc
A: Neutral package with strong cartons normally , or according to your requirements.
A: T/T, L/C, MoneyGram, PayPal, Cash etc
A: EXW, FOB, CFR, CIF，DDU，DDP.
A:The specific delivery time depends on the items and the quantity of your order. We will confirm it with your detailed order.
A:Yes, the warranty period is 6 months. Coverage includes core engine components. Wear-and-tear parts and failures caused by improper operation are excluded.
A: We offer professional engine customization services and can fully tailor the products to your specific requirements, with a variety of options available for pricing, specifications and configurations. The minimum order quantity (MOQ) for customized engines is 1 unit.
A:Yes, all engines undergo rigorous appearance inspections and comprehensive performance tests prior to delivery to ensure compliance with quality standards. We will also provide customers with detailed factory test videos and real-time shipping photos for full traceability.
A:Should you have any quality inquiries after receiving the goods, please contact our professional after-sales team in a timely manner and provide relevant photos and videos for verification. We will first provide efficient remote technical support to resolve your issues promptly.
For confirmed quality problems within the warranty period, we offer free repair, replacement of faulty parts or even full machine replacement services, with all associated logistics costs borne by our company.
For issues not attributable to our side, we still provide free technical guidance and supply matching spare parts; the cost of spare parts and related logistics shall be borne by the customer.
