Details
Genuine DCEC Cummins 6BT5.9-C115 Construction Machinery Engine
HekoPower supplies brand new, original Dongfeng Cummins 6BT5.9-C115 complete engine assemblies directly from China. This heavy-duty, 6-cylinder, 5.9-liter Cummins 6BT5.9 construction machinery engine delivers a reliable 115 HP (85 kW) at a rated speed of 2000 RPM.
As a dedicated genuine DCEC 6BT5.9-C115 engine supplier in China, we provide fully tested factory units. Our complete power packs offer a direct drop-in solution for industrial operators looking to bypass the high costs of local rebuilds.
Tech Specs of Cummins 6BT5.9-C115
General Engine Data
Engine Model: Cummins 6BT5.9-C115
Type: 6 Cylinders in Line
Displacement: 5.9 L
Bore * Stroke: 102 * 120
Overall Dimension: 867mm*544mm*988mm
Net Weight (with flywheel & alternator): 432 Kg
Key Performance Data
Rated Power: 85 kW/115HP
Rated Speed: 2000 rpm
Max Torque/Speed: 436 N.m @ 1500 rpm
Fuel Consumption @ Rated Power: 225 g/Kw.h
Max Continuous Running Altitude: 2000 m
More Technical Data
Certification: Euro I
Aspiration: Turbocharged-Intercooled
Fuel System: Wuxi Weifu A Pump/ RSV Govenor
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: 9.9 L
Cummins 6BT5.9-C115 24V vs 12V Electrical System Options
HekoPower offers both electrical configurations depending on your machine's original build:
- The 12-Volt Setup: Used primarily in lighter, older civil construction machinery or small localized pump stations.
- The 24-Volt Setup: Ideal for cold weather operations. The 24V starter motor delivers double the cranking power to turn the engine over quickly in freezing conditions.
DCEC 6BT5.9-C115 Cold Start Auxiliary System Data
For operation in extreme climates, the engine integrates an intake air preheater grid. This auxiliary system warms up the incoming air charge before it enters the cylinders, drastically reducing white smoke emissions and battery drain during cold winter startups.
Real Application Scenarios and Machinery Compatibility
Choosing the correct configuration of a Cummins 5.9L 115HP diesel engine depends heavily on its industrial application. The C115 variant is tuned for high-torque, lower-RPM cycles common in construction environments.
Cummins 6BT5.9-C115 Engine for Excavator Replacement
Excavators demand immediate hydraulic response under sudden load changes. The Cummins 6BT5.9-C115 engine for excavator replacement uses a specialized governor profile to prevent engine stall when hydraulic pumps hit peak pressure. It is a drop-in replacement for mid-sized excavators operating in tough earthmoving environments.
DCEC 6BT5.9-C115 Engine for Liugong and XCMG Loaders
Wheel loaders require high low-end torque to push into material piles. The DCEC 6BT5.9-C115 engine for Liugong / XCMG loaders delivers a peak torque of 430 N.m at 1500 RPM. This torque curve perfectly matches the torque converter characteristics of classic Chinese-manufactured wheel loaders.
Industrial 6BT5.9-C115 Diesel Engine Pump Drive Application
For stationary power, the 6BT5.9-C115 diesel engine pump drive application is common in agricultural irrigation and emergency firefighting systems. The mechanical injection setup guarantees continuous operation without the risk of electronic control unit (ECU) failures during heavy water exposure.
Technical Evaluation and System Comparisons
Engine configurations vary drastically across different prefixes. Understanding these subtle mechanical variations protects your fleet from purchasing incompatible assemblies.
Difference Between Cummins 6BT5.9 C115 and C110 Engine
While both units share the classic 5.9-liter engine block, their internal configurations differ:
- The Power Curve: The C115 produces 115 HP at 2000 RPM, while the C110 is limited to 110 HP at 2200 RPM.
- Fuel Injection Calibration: The C115 fuel pump delivers a slightly higher fuel volume per stroke to handle heavy construction tasks at lower engine speeds.
- Turbocharger Mapping: The exhaust housing on the C115 turbocharger is optimized to handle a higher thermal load under extended duty cycles.
Cummins 6BT5.9 Mechanical Injection System Explanation
Modern electronic engines fail when exposed to low-quality, high-sulfur diesel fuel. The Cummins 6BT5.9 mechanical injection system explanation highlights its reliance on a rugged inline injection pump. The mechanical governor controls fuel distribution via simple springs and weights. This means the engine runs smoothly even on poorly filtered fuel, which is perfect for remote jobsites.
Cummins 6BT5.9-C115 Fuel Injection Pump Type
This engine utilizes a premium Cummins 6BT5.9-C115 fuel injection pump type, specifically a Weifu or BYC inline A-pump equipped with an RSV mechanical governor. This precise combination stabilizes engine idle speed under varying hydraulic pump loads.
Maintenance, Performance, and Fuel Efficiency Data
Protecting your engine investment requires an accurate understanding of real-world operational parameters and consumption rates.
6BT5.9-C115 Engine Fuel Consumption Rate Per Hour
Fuel planning directly affects operational margins. The 6BT5.9-C115 engine fuel consumption rate per hour averages between 18 to 22 liters per hour under a steady 80% working load. At full capacity, specific fuel consumption sits at approximately 214 g/kW.h, making it highly economical for its displacement class.
6BT5.9 Engine Performance and Torque Characteristics
The 6BT5.9 engine performance and torque characteristics are defined by long-stroke power delivery (102mm bore x 120mm stroke). This internal geometry creates excellent high-torque stability at mid-range RPMs, ensuring your machinery does not lose speed when dragging heavy loads or digging into hard clay.
B2B Procurement and Sourcing Information
HekoPower streamlines the international purchasing process for procurement managers, construction fleets, and rental companies.
Buy Brand New Cummins 6BT5.9-C115 Engine Wholesale
We offer volume pricing brackets for heavy machinery repair shops and fleet management teams looking to buy Cummins 6BT5.9-C115 engine wholesale. Every single unit undergoes a strict dynamometer test before leaving our facility to verify oil pressure and power metrics.
Original Cummins 6BT5.9-C115 Engine with 1-Year Warranty
Every unit shipped by HekoPower is an original Cummins 6BT5.9-C115 engine with 1-year warranty coverage. We supply genuine global coverage documentation, which protects your operation against material defects or early component breakdown.
Cummins B5.9-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 6BT5.9-C115, 6BT5.9-C120, 6BT5.9-C125, 6BT5.9-C130, 6BT5.9-C135, 6BT5.9-C145, 6BT5.9-C150, 6BTA5.9-C125, 6BTA5.9-C130, 6BTA5.9-C150, 6BTA5.9-C155, 6BTA5.9-C170, 6BTA5.9-C175, 6BTA5.9-C180, 6BTAA5.9-C130, 6BTAA5.9-C150, 6BTAA5.9-C160, 6BTAA5.9-C180, 6BTAA5.9-C190, 6BTAA5.9-C195, 6BTAA5.9-C205.
Frequently Asked Questions About the Cummins 6BT5.9-C115
What is the current Cummins 6BT5.9-C115 complete engine pack price?
The Cummins 6BT5.9-C115 complete engine pack price varies based on your specific accessory requirements, such as your choice of a 12V or 24V electrical system, radiator configurations, and required shipping destinations. Contact our sales department directly to get a firm Cummins 6BT5.9-C115 engine factory price quote including ocean freight.
Is this engine a genuine DCEC Cummins product?
Yes. HekoPower is a recognized DCEC Cummins 6BT5.9-C115 exporter from China. Every engine assembly features a verified stainless steel DCEC data plate, unique serial numbers, and a factory anti-counterfeiting tracking stamp.
Can I use this engine to replace an old mechanical industrial motor?
Absolutely. Because it uses a simple, non-electronic mechanical injection system, this 115HP Cummins 6BT5.9 industrial engine for machinery use requires only fuel lines, a cooling loop, and a battery connection to operate. This makes it an ideal replacement engine for older, complicated, or discontinued industrial machinery models.
Can the 6BT5.9-C115 replace other Cummins 6BT engines?
Yes, in many cases it can replace lower or similar power variants if mounting and drivetrain alignment are compatible.
What makes the mechanical injection system different?
It does not rely on electronic ECU control, making it easier to maintain and more resistant to electrical failure.
Can this engine be used in excavator repowering projects?
Yes, it is commonly used in excavator rebuild and repower applications due to its standard 6BT architecture.
