Details
Genuine DCEC Cummins 6BTA5.9-C170 Construction Diesel Engine Assembly
Procuring a heavy-duty engine requires absolute confidence in performance parameters and component authenticity. The original Dongfeng Cummins 6BTA5.9-C170 is a highly regarded workhorse within the engineering, agricultural, and industrial sectors globally. As an established, specialist engine supplier, HekoPower provides complete, factory-tested DCEC Cummins 6BTA5.9-C170 assembly units designed for heavy industrial use.
This model is a 5.9-liter, in-line 6-cylinder mechanical power plant. It features a reliable turbocharger and intercooler configuration that produces a rated output of 125kW at an operating speed of 2300 RPM. This configuration makes it highly effective for machinery operators and fleet managers who value mechanical simplicity, durability under continuous loads, and low electronics dependency.
Tech Specs of Cummins 6BTA5.9-C170
General Engine Data
Engine Model: Cummins 6BTA5.9-C170
Type: 6 Cylinders in Line
Displacement: 5.9 L
Bore * Stroke: 102 * 120
Overall Dimension: 1100mm*750mm*988mm
Net Weight (with flywheel & alternator): 443 Kg
Key Performance Data
Rated Power: 125 kW/170HP
Rated Speed: 2450 rpm
Max Torque/Speed: 630 N.m @ 1400 rpm
Fuel Consumption @ Rated Power: 233 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: 10.4 L
Technical Architecture and Competitive Comparisons
Mechanical Fuel System Differentiation
Many current industrial engines rely heavily on complex Common Rail electronic injection systems. In contrast, the 170HP Cummins industrial engine retains a dependable mechanical infrastructure. This engine utilizes a premium Wuxi Weifu mechanical AD fuel injection pump paired with a responsive RSV mechanical governor.
Unlike standard electronic controls, a mechanical governor regulates fuel delivery through simple internal weights and springs. This ensures instantaneous mechanical response to changing physical loads.
This arrangement eliminates delicate wiring harnesses, engine control modules (ECMs), and sensitive electronics that frequently fail in high-vibration environments. For operators in remote mining camps, logging areas, or harsh construction sites, this mechanical setup allows troubleshooting using basic hand tools. This approach drastically minimizes costly field downtime.
Strategic Upgrades Over Alternative Engine Blocks
Engine buyers often choose between the 6BT5.9 and the enhanced 6BTA5.9 variants. The critical difference lies in the intake system cooling infrastructure.
- Standard 6BT Models: Rely on a basic turbocharger setup, forcing hot air directly into the intake valves.
- The 6BTA5.9-C170 Profile: Employs an integrated water-to-air intercooler directly on top of the intake manifold jacket.
By routing engine coolant through an internal heat exchanger core, the intake air temperature drops dramatically before entering the cylinders. Cool air has a much higher oxygen density than hot air, facilitating more complete combustion per power stroke. This configuration yields a flat, robust torque curve peaking at 630 N.m at a low 1400 RPM. This gives operators immediate breakout power while keeping structural thermal stress low.
Real-World Industrial Application Scenarios
Construction Machinery and Excavator Re-Powering
The structural footprint and torque delivery profile make this a highly versatile Cummins 6BTA5.9 engine for excavator and loader machinery. Equipment brands like Liugong, XCMG, and Lonking frequently match their heavy machinery hydraulic systems with this specific power profile.
When powering a hydraulic excavator, the engine operates continuously against high-pressure tandem hydraulic pumps. The 6BTA5.9-C170 handles these sudden pressure spikes well. Its thick, heavy cast-iron engine block resists the warping forces generated during sudden structural stalls or maximum breakout maneuvers.
Stationary Pump Packs and Drilling Equipment
Beyond mobile machinery, this engine functions as a reliable industrial power pack for stationary deep-well water pumps and rotary drilling equipment. For water pump drive configurations, the engine is paired with an industrial PTO flywheel housing to support continuous running. It can run uninterrupted for hours at a time, moving thousands of gallons of water.
Its optimized fuel map consumes a modest 218 to 233 grams of fuel per kilowatt-hour under full operational loads. This efficiency reduces overall running costs during long dewatering projects or continuous mining extraction tasks.
Overhaul, Maintenance, and Replacement Guidelines
Essential Engine Maintenance Milestones
To maximize the service lifespan of a heavy-duty engine, maintenance crews should follow a disciplined service schedule.
Every 250 Operating Hours:
- Change Lubricating Oil (High-quality 15W-40)
- Replace Spin-on Full-Flow Lube Oil Filter
- Inspect Water Separator & Fuel Pre-Filters
Every 1200 Operating Hours:
- Measure & Adjust Valve Lash Clearances
- Clean Air Intake Element Core
- Inspect Turbocharger Shaft Play
Using high-quality 15W-40 lubricating oil preserves the wet-type cylinder liners. This prevents premature wear caused by combustion soot buildup. Additionally, keeping the fuel system clear of water using secondary spin-on fuel filters protects the fine tolerances inside the Weifu fuel pump plungers.
Replacing Older Engine Units Safely
When replacing an older, worn-out 6BT or 4BTA block with a new engine unit, mechanics must verify multiple structural interfaces. It is important to inspect the existing flywheel housing size (typically standard SAE #3) and the crankshaft coupling dimensions.
Installers should always replace the old cooling radiator and clean out the hydraulic oil coolers during an upgrade. Residual metal shavings from an old engine failure hiding inside lines can quickly destroy a brand-new engine's bearing journals during its initial startup.
Procurement Transparency and Sourcing Logistics
Global Sourcing and Supply Chain Verification
HekoPower serves as an international exporter of authentic industrial power plants directly from major production clusters. Every new DCEC engine assembly undergoes thorough dyno-testing on the factory floor before being prepared for export. This testing confirms oil pressure, throttle response, and thermal stability match factory specifications.
To prevent corrosion during long ocean transits, every engine block receives an anti-rust coating. Units are then secured inside durable, heavy-duty wooden trade enclosures suitable for forklift handling.
Wholesale Support for Fleet Operators
We maintain an active, wholesale inventory of complete engine assemblies and critical replacement parts to ensure rapid order turnaround. This wholesale support gives large construction operations and independent workshops a reliable supply line. It cuts out middleman markups, helping teams keep their projects on track.
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.
Comprehensive Frequently Asked Questions
Can this mechanical engine replace newer electronic Tier III/Tier IV models?
Yes, it can be used for mechanical retrofitting, but it is important to review local environmental regulations first. Replacing an electronic engine with a mechanical unit simplifies wiring, but it changes the machine's emissions profile to a Euro II/Tier II standard.
What causes a high fuel consumption rate in this engine?
Abnormal fuel consumption is usually caused by restricted airflow or a worn injection system. Check for a clogged air filter or boost leaks around the intercooler plumbing. If the intake air cannot reach full pressure, the air-to-fuel ratio drops, causing incomplete combustion and black exhaust smoke.
What are the dimensions and shipping weight of a complete assembly?
A bare 6BTA5.9-C170 engine block weighs roughly 443 kg dry. When fully dressed with a radiator, air filter, and export packaging, the total shipping weight is approximately 515 kg. The packed dimensions average 1432mm x 1130mm x 785mm.
How does the Weifu mechanical pump handle low-quality diesel fuel?
The mechanical AD inline pump handles variable-quality fuel better than sensitive common-rail systems. However, clean fuel remains critical for long-term performance. We recommend installing an inline fuel-water separator to prevent internal corrosion inside the pump elements.
