Details
Genuine Cummins 4BTA3.9-C80 Engine Assembly for Industrial Applications
The Cummins 4BTA3.9-C80 engine assembly is a 4-cylinder inline diesel power unit designed for industrial and construction use. As part of the Dongfeng Cummins (DCEC) 3.9L engine series, it delivers a rated output of 80HP and is widely used in pump systems, generator sets, and light-to-medium construction machinery.
HekoPower supplies complete engine assemblies with factory configuration options, including cooling system, fuel system calibration, and mounting adaptation for different equipment types.
Compared with generic aftermarket engines, the 4BTA3.9-C80 provides better fuel efficiency stability and longer service intervals when operated under continuous industrial load conditions.
Tech Specs of Cummins 4BTA3.9-C80
General Engine Data
Engine Model: Cummins 4BTA3.9-C80
Type: 4 Cylinders in Line
Displacement: 3.9 L
Bore * Stroke: 102 * 120
Overall Dimension: 867mm*544mm*988mm
Key Performance Data
Rated Power: 60 kW/80HP
Rated Speed: 2200 rpm
Max Torque/Speed: 350 N.m @ 1500 rpm
Fuel Consumption @ Rated Power: 249 g/Kw.h
Max Continuous Running Altitude: 2000 m
More Technical Data
Certification: Euro I
Aspiration: Turbocharged-Intercooled
Fuel System: Weifu PW/RSV
Compression Ratio: 17.3:1
Electrical System (Starter Motor/Alternator): 12V/24V
Lowest Starting Temp Without auxiliary system: -12℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 7.9 L
Advanced Aspiration and Air Handling
The letter "A" in the 4BTA designation represents an integrated water-air intercooler system. Unlike standard turbocharged configurations, this setup routes compressed air through a liquid-cooled heat exchanger before it enters the cylinders. This cooling process increases air density, which optimizes the fuel burn. The result is more horsepower out of a smaller displacement frame, offering reliable operation even in restricted machine compartments.
Fuel Delivery and Injection Subsystems
Fuel management relies on a mechanical Cummins 4BTA3.9-C80 with a BYC PB injection pump. This traditional setup is ideal for harsh operating conditions. It avoids complex electronic sensors that often fail in high-vibration environments. The mechanical governor maintains stable RPM controls, making the 4BTA3.9-C80 engine fuel consumption rate highly predictable under varying loads. Expect an efficient consumption curve that keeps operational costs manageable.
Engineering Differences: Cummins 4BTA3.9-C80 vs C100
Selecting the right engine configuration prevents premature equipment wear and over-purchasing. Many procurement teams confuse different models within the Dongfeng Cummins 3.9L engine 4BTA series. Evaluating the differences between the 80HP and 100HP variants reveals distinct design choices.
Power Density and Torque Curves
The primary difference in the 80HP vs 100HP Cummins 4BTA3.9 engine comparison lies in the fuel calibration and turbocharger matching. The C80 version is tuned for 60kW (80HP) at 2200 RPM, optimizing low-end torque for constant-load machines. The C100 variant uses a different fuel delivery rate to achieve 74kW (100HP). This extra power provides faster acceleration responses but increases structural stress and thermal loads on internal parts.
Cooling System Demands
The DCEC Cummins 4BTA vs 4BT engine differences focus on temperature regulation. Standard 4BT engines rely solely on a turbocharger without intercooling. The 4BTA3.9-C80 uses water-air intercooling to lower intake air temperatures. This allows the 80HP unit to match the thermal durability of larger engines while using less space than the air-to-air intercooled 100HP layout.
Real Application Scenarios and Machine Integration
The DCEC Cummins 4BTA3.9-C80 diesel engine fits seamlessly into various heavy equipment configurations. Its compact footprint makes it a popular drop-in option for international machine builders and fleet operators.
Construction Machinery Power Integration
This 80HP diesel engine for construction machinery functions as the core power pack for small excavators, wheel loaders, and road rollers. It provides the high torque needed to drive main hydraulic pumps. This ensures smooth operations during simultaneous digging and lifting maneuvers. It serves as an ideal Cummins 4BTA3.9-C80 excavator repower engine for older machines needing a new lease on life.
Continuous Duty Pump and Generator Sets
The torque characteristics make this unit an excellent choice for a Cummins 4BTA3.9 pump drive engine. It connects directly to high-capacity fluid pumps, operating reliably as a Cummins 4BTA3.9-C80 pump drive engine for water pump sets. It handles continuous water moving tasks in agricultural drainage and industrial bypass systems. Additionally, it serves as a reliable 3.9L industrial diesel engine for generator sets, running at a steady 1500 or 1800 RPM to provide dependable backup electricity.
Maintenance, Repowering, and Equipment Replacement Tips
Replacing an industrial engine involves more than just aligning bolt holes. Proper installation ensures your equipment achieves its full operational lifespan.
Verification of Installation Dimensions
Before finalizing a purchase, confirm the 4BTA3.9-C80 weight and installation dimensions. The dry weight of a bare engine sits around 350 kg, which alters the balance of smaller machines. Verify the flywheel housing sizes (typically SAE #3 or SAE #4) and the flywheel configurations to match your existing hydraulic pump drives or transmission input shafts perfectly.
Safe Repowering Procedures
When executing a Cummins 4BTA3.9-C80 replacement for construction machinery, inspect the peripheral support systems. Do not reuse old, contaminated radiators or clogged air intake piping. Debris from a previous engine failure can quickly damage a brand-new turbocharger or score cylinder walls. Flush all external oil cooler lines before firing up the new engine for the first time.
Global Sourcing, Price, and Logistics Support
Purchasing heavy machinery components across borders requires transparent logistics and clear communications. HekoPower operates as an experienced industrial diesel engine export Cummins China supplier, simplifying your international trade path.
Wholesale Pricing and Lead Time Expectations
We maintain direct relationships with the manufacturing facilities, allowing us to offer competitive DCEC Cummins engine factory prices for 80HP units. The standard Cummins 4BTA3.9-C80 price and lead time vary based on your specific configuration requirements, such as a 12V or 24V electrical starter system. Standard builds usually ship from our warehouse within 7 to 15 days, helping you minimize project delays.
Industrial Packaging and Secure Shipping
Every Cummins 4BTA3.9-C80 engine wholesale China supplier must protect cargo against maritime moisture. HekoPower packs each complete engine assembly inside a heavy-duty, fumigated wooden crate. We apply anti-rust coatings to all exposed shafts and wrap the entire engine block in heavy plastic sealing. This keeps your investment safe during long ocean freight transits.
Cummins B3.9-C Series, original products from Dongfeng Cummins Engine Plant (DCEC), Cummins Joint Venture Plant since 1986, 50% shareholding by Cummins USA. This series mainly includes 4BT3.9-C80, 4BT3.9-C100, 4BT3.9-C105, 4BT3.9-C110, 4BTA3.9-C80, 4BTA3.9-C100, 4BTA3.9-C110, 4BTA3.9-C120, 4BTA3.9-C125, 4BTA3.9-C130, 4BTAA3.9-C80, 4BTAA3.9-C100, 4BTAA3.9-C110, 4BTAA3.9-C115, 4BTAA3.9-C125, 4BTAA3.9-C130.
Frequently Asked Questions Regarding the 4BTA3.9-C80
Can I use the 4BTA3.9-C80 engine for agricultural machinery?
Yes, this model is highly effective as a Cummins 4BTA3.9 engine for agricultural machinery, including large tractors, combined harvesters, and irrigation systems. The high mechanical torque handles heavy field work well, and the simple mechanical fuel system operates reliably even when using lower-quality farm diesel.
What is included in a complete engine power pack?
A complete engine power pack from HekoPower contains the core cylinder block, cylinder head, fuel injection pump, turbocharger, water-air intercooler, alternator, starter motor, and water pump. Customized add-ons like radiators, air cleaners, and control dashboards can be included upon request to match your installation needs.
How do I verify that the engine is a genuine DCEC product?
Every genuine Dongfeng Cummins 4BTA3.9 engine features a metal data plate attached to the gear housing. This plate lists the unique engine serial number (ESN). We provide this serial number to buyers before shipment, allowing you to verify the build history and parts compatibility through the official Cummins global database.
Is the Cummins 4BTA3.9-C80 suitable for continuous 24-hour operation?
Yes. It is designed for industrial duty cycles, especially in pump and generator applications.
What is the typical fuel consumption?
Fuel consumption depends on load, but the mechanical system is optimized for stable mid-load efficiency rather than peak power.
Can this engine replace older 4BT engines?
Yes, but minor adjustments may be required depending on mounting and cooling system differences.
What is the difference between 80HP and higher HP versions?
Higher horsepower versions increase output but also increase fuel demand and thermal load.
