4BTAA3.9 Diesel Engine for Generator Sets, Construction & Agricultural Machinery
The 4BTAA3.9 is an industrial diesel engine specially designed for non-road and stationary equipment.
Optimized for low-speed high torque and continuous operation, it is widely used in generator sets, construction machinery, agricultural equipment, and pump units.
4BTAA3.9 Engine Models
| Model | Rated Power (kW@rpm) | Max Torque (N·m@rpm) |
|---|---|---|
| 4BTAA3.9-C80 | 60 @ 2200 | 385 @ 1300 |
| 4BTAA3.9-C100 | 74 @ 2200 | 400 @ 1500 |
| 4BTAA3.9-C125 | 93 @ 2200 | 530 @ 1400 |
| 4BTAA3.9-C130 | 97 @ 2500 | 519 @ 1400 |
The 4BTAA3.9 diesel engine is a heavy-duty industrial power solution designed for stationary and non-road mobile applications.
Unlike automotive engines, the 4BTAA3.9 is calibrated to deliver strong low-speed torque, excellent load response, and stable continuous power output, making it ideal for equipment that operates under constant or heavy-load conditions such as generator sets, agricultural machinery, and construction equipment.
This engine is recognized worldwide for its durability, reliability, and low operating cost.
Performance Characteristics
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Optimized Torque Curve
Designed to deliver high torque at low RPM, ensuring excellent pulling power for heavy-duty machinery. -
Continuous Duty Operation
Capable of long-term stable operation at rated speed, especially suitable for diesel generator sets and pump systems. -
Industrial Power Calibration
Power ratings are based on kW or continuous horsepower, different from automotive engine tuning.
Configuration & Design Features
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Fuel System for Constant-Speed Operation
Equipped with a governor suitable for steady working conditions. -
Enhanced Cooling System
Radiator and water pump optimized for high-temperature and dusty environments. -
Flexible Flywheel & Housing Options
Compatible with clutches, gearboxes, and couplings for generators and industrial machinery. -
Adapted Exhaust Manifold Design
Exhaust orientation can be configured to meet different installation requirements.
Emission Compliance
Depending on the production year and configuration, the engine can comply with non-road emission standards, such as China Stage II / Stage III.
Applications
-
Power Generation
Diesel generator sets -
Construction Machinery
Loaders, air compressors, concrete equipment -
Agricultural Machinery
Tractors, combine harvesters, large agricultural equipment -
Pump Systems
Water pump units, irrigation systems -
Other Industrial Equipment
Stationary or off-road power applications
Technical Specifications
4BTAA3.9 Engine Models
| Model | Rated Power (kW@rpm) | Max Torque (N·m@rpm) |
|---|---|---|
| 4BTAA3.9-C80 | 60 @ 2200 | 385 @ 1300 |
| 4BTAA3.9-C100 | 74 @ 2200 | 400 @ 1500 |
| 4BTAA3.9-C125 | 93 @ 2200 | 530 @ 1400 |
| 4BTAA3.9-C130 | 97 @ 2500 | 519 @ 1400 |
General Specifications
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Engine Type: Inline 4-cylinder, 4-stroke
-
Aspiration: Turbocharged & Aftercooled
-
Cooling System: Water-cooled
-
Fuel System: Mechanical Governor / Industrial Fuel System
-
Displacement: 3.9 L
-
Duty Type: Continuous / Heavy-duty
-
Application: Generator, Construction, Agriculture, Pump Systems
OEM configurations, different power ratings, and complete power solutions are available.
Contact us now for price, lead time, and technical support.
| Model |
4BTAA3.9 – C100 ,4BTAA3.9 – C125 ,4BTAA3.9 – C130 ,4BTAA3.9-C80 |
|---|---|
| Rated Power (kW@rpm) |
60@2200 ,74@2200 ,93@2200 ,97@2500 |
| Max Torque (N·m@rpm) |
385@1300 ,400@1500 ,519@1400 ,530@1400 |
| 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.
