4B3.9-G1 G-Drive Engine
DCEC 4B3.9-G1 generator drive engine is a 4-cylinders in line,3.9 liter four-strokes engine with 102 mm bore and 120 mm stroke.
Equipped with BYC A pump and RSV mechanical governor. the prime power for 50 Hz generator set (1500 RPM) of DCEC 4B3.9-G1 generator drive engine is 24 kW.
As part of EMAC, SinoGen also provide complete power supply solutions that powered by DCEC, our ranges of products including open type generator set, silence type generator set, super silence type generator set, mobile trailer, complete power truck and complete power car for railways applications.
We provide full life cycle services for all customers, from design to power system supply, from installation to commissioning, from after-sales service training to spare parts supply, from trouble shooting to overhaul technical support.

Automotive | Premium Integrated Powertrain System-DuraMac
As part of EMAC, DuraMac is Committed to providing reliable powertrain system to commercial vehicle manufacturers around the world. Based on dozens of world-class engine manufacturing resources in China, and as official exporting agent of Fast tranmission and Dongfeng Dana axle, DuraMac provides one-stop powertrain solutions including both engine powertrain and EV powertrain.

Industrial | Reliable Industrial Power System-ConeMac
Committed to providing stable and reliable premiem power system for global construction machinery manufacturer partners, ConeMac is a sub-brand of the EMAC Group that focuses on construction equipment application. ConeMac’s ranges of products mainly inclduing marine construction engines power pack, construction equipment gearbox, gear reducer, explosion-proof engines, generator set and water pump set for mining, oil and gas field.

Pump | High-End Water Pump Drive Package-PumpMac
As part of EMAC, PumpMac focusing on water pump set related business, from water pump drive engine power pack to complete water pump set, from NFPA20 standard fire fighting pump accessories to fire pump drive package, from explosion proof accessories to complete explosion-proof water pump set, PumpMac provides professional one-stop solution for everything customer needed for water pump set industry.

Energy | One-Stop Generator Set Solution-SinoGen
As part of EMAC, SinoGen focusing on generator set related business, from G-drive engine power pack to complete generator set, from open type generator set to silence type generator set, from super silent type generator set to mobile power trailer, from generator control panel to synchronizing cabinet, SinoGen provides professional one-stop solution for everything customer needed for generator set.

Maritime | Marine Propulsion and Power System-SeaMac
Committed to providing reliable premium propulsion system and power system for all kinds of ships around the world, SeaMac is a sub-brand of EMAC group that focused on maritime application.
SeaMac’s ranges of products mainly inclduing marine main engine, marine gearbox, marine propellers, marine control lever system, marine auxiliary engine, marine generator set and emergency generator set.

Parts | A Trustworthy Engine Parts Partner-PartMac
All of EMAC’s partners are facing big challenges with sourcing original spare parts in China. Committed to providing truthworthy and professional after-sales support and parts supply, PartMac is a sub-brand of EMAC group that focusing on parts business. Stick to original parts only, PartMac can’t give any solution on CHEAP PARTS, but you don’t need to worry about any quality issues with every single parts from PartMac.
Advantages of DCEC 4B3.9-G1 G-Drive Engine
-
Efficient and fuel-saving: the cylinder bore adopts a platform mesh honing design; the perfect geometric structure effectively prevents oil leakage.
-
adopts advanced technologies such as new piston ring components and gasket crimping molding to reduce oil loss.
-
Manufacturing process: The cylinder block and cylinder head adopt integrated design, which eliminates the occurrence of engine water leakage and oil leakage.
-
The parts are about 40 % less than other similar engines, and the failure rate is greatly reduced.
-
Strong power: adopts Holset supercharger with integral wastegate valve, low-speed response and strong power.
-
Advanced design and high-quality manufacturing, adaptable to severe operating conditions, high strength, and reliable operation under heavy load.
Technical Specifications
Engine Model: | 4B3.9-G1 |
Engine Type: | 4 Cylinders |
Displacement: | 3.9 L |
Rated Speed: | 1500 RPM |
Rated Power / Speed: | 24 kW @ 1500 RPM |
Fuel System: | BYC A Pump / RSV Mechanical Governor |
Cooling System: | 25.9 kW (Dry manifolds) |
Aspiration Method: | Naturally Aspirated |
Emission Standard: | N/A |
Bore * stroke: | 102 mm * 120 mm |
Packing Size(L * W * H): | 1080 mm * 625 mm * 1085 mm |
Wet Weight: | 308 kg |
Lead Time: | 15-30 Working Days |
Payment Terms: | T/T ,L/C |
Engine Model |
Standby Power |
Prime Power |
Fuel System |
Aspiration |
4B3.9-G1 | 27 kW @ 1500 RPM | 24 kW @ 1500 RPM | BYC A Pump / RSV Mechanical Governor | Naturally Aspirated |
4B3.9-G2-A | 27 kW @ 1500 RPM | 24 kW @ 1500 RPM | BYC A Pump / Electronic Governor | Naturally Aspirated |
4B3.9-G2-B | 33 kW @ 1800 RPM | 30 kW @ 1800 RPM | BYC A Pump / Electronic Governor | Naturally Aspirated |
4B3.9-G11-A | 22 kW @ 1500 RPM | 20 kW @ 1500 RPM | Weifu A Pump /RSV | Naturally Aspirated |
4B3.9-G11-B | 26 kW @ 1800 RPM | 23 kW @ 1800 RPM | Weifu A Pump /RSV | Naturally Aspirated |
4B3.9-G12-A | 30 kW @ 1500 RPM | 27 kW @ 1500 RPM | Weifu A Pump / Electronic Governor | Naturally Aspirated |
4B3.9-G12-B | 36 kW @ 1800 RPM | 33 kW @ 1800 RPM | Weifu A Pump / Electronic Governor | Naturally Aspirated |
4BT3.9-G1 | 40 kW @ 1500 RPM | 36 kW @ 1500 RPM | North Oil A Pump / RSV Mechanical Governor | Turbocharging |
4BT3.9-G2-A | 40 kW @ 1500 RPM | 36 kW @ 1500 RPM | North Oil A Pump / Electronic Governor | Turbocharging |
4BT3.9-G2-B | 44 kW @ 1800 RPM | 40 kW @ 1800 RPM | North Oil A Pump / Electronic Governor | Turbocharging |
4BTA3.9-G2-A | 64 kW @ 1500 RPM | 58 kW @ 1500 RPM | Beiyou PB Pump / GAC 24V / 12V Electronic Governor | Pressurized Water is Air-Cooled |
4BTA3.9-G2-B | 74 kW @ 1800 RPM | 67 kW @ 1800 RPM | Beiyou PB Pump / GAC 24V / 12V Electronic Governor | Pressurized Water is Air-Cooled |
4BTA3.9-G11-A | 80 kW @ 1500 RPM | 70 kW @ 1500 RPM | North Oil PB Pump / Electronic Governor | Pressurized Water is Air-Cooled |
4BTA3.9-G11-B | 90 kW @ 1800 RPM | 80 kW @ 1800 RPM | North Oil PB pump / Electronic Governor | Turbo Charging With Inter-Cooling |
4BTA3.9-G12 | 74 kW @ 1500 RPM | 67 kW @ 1500 RPM | A Pump / Electronic Governor | Turbo Charging With Inter-Cooling |
4BTA3.9-G13 | 97 kW @ 1500 RPM | 87 kW @ 1500 RPM | Weifu PW Pump / Electronic Governor | Turbo Charging With Inter-Cooling |
4BTAA3.9-G3 | 106 kW @ 1500 RPM | 96 kW @ 1500 RPM | Weifu PW Pump / Electronic Governor | Turbocharged air-to-air cooling |
——END—— |
General Infomation of DCEC 4B3.9-G1 Generator Drive Engine |
|||
Engine Model | 4B3.9-G1 | Standby Power | 27 kW @ 1500 RPM |
Prime Power | 24 kW @ 1500 RPM | Compression Ratio | N/A |
Number of Cylinders | 4 Cylinders | Aspiration | Naturally Aspirated |
Fuel System | BYC A Pump / RSV Mechanical Governor | Displacement | 3.9 L |
Bore * stroke | 102 mm * 120 mm | Governor Regulation | ≤8 % |
Approximate Engine Weight | 308 kg | Code Revision CPL | PP43114 |
Pack Dimensions | 1080 mm * 625 mm * 1085 mm | Continuous Power | N/A |
Installation Data of DCEC 4B3.9-G1 Generator Drive Engine |
|||
Mass Moment of Inertia of Rotating Components (No Flywheel) | 0.143 kg·m² | ||
Center of Gravity from Rear Face of Block | 373 mm | ||
Center of Gravity above Crankshaft Centerline | 163 mm | ||
Maximum (Static) Bending Moment at Front Support Mounting Surface | N/A | ||
Maximum (Static) Bending Moment at Side Pad Mounting Surface | N/A | ||
Maximum (Static) Bending Moment at Rear Face of Block | 1356 N.m | ||
Maximum Exhaust Back Pressurer | 76 mmHg | ||
——END—— |
Engine Performance Data 1500 RPM / 50HZ of DCEC 4B3.9-G1 Generator Drive Engine |
|||
Standby Power | 27 kW/36 HP | Prime Power | 24 kW/32 HP |
Continuous Power | N/A | Fuel Consumption | 245 g/kW.h |
Cons 100% | 7.0 L/h | Governed Engine Speed | 1500 RPM |
Output Power | 124 kW/32 HP | Torque | 153 N.m |
Engine Idle Speed | 950 – 1050 RPM | Friction Horsepower | 8.2 kW |
Piston Speed | 6.0 m/s | Engine Water Flow to Engine | 2.2 L/s |
Intake Air Flow | 67 L/s | Exhaust Gas Flow | 67 L/s |
Exhaust Gas Temperature | 380 ℃ | Radiated Heat to Ambient | N/A |
Heat Rejection to Coolant | 25.9 kW (Dry manifolds) | Heat Rejection to Exhaust | N/A |
System Technical Data of DCEC 4B3.9-G1 Generator Drive Engine |
|||
Dirty Filter Element | 508 mmH2O | Use Ordinary Air Filter and Clean Filter Element | 254 mmH2O |
Use Heavy Duty Air Filter and Clean Filter Element | 305 mmH2O | Minimum Inlet Pipe Diameter is Recommended | N/A |
Maximum Temperature Rise of External Air to Supercharger Inlet | N/A | Use A Heavy – Duty Air Filter with Minimal Dirt Blocking Capability | N/A |
Minimum Engine Oil Pressure for Engine Protection Devices Idle Speed | 207 kPa | Minimum Engine Oil Pressure for Engine Protection Devices Governed Speed | 345 kPa |
Maximum Oil Temperature | 121 ℃ | Oil Capacity With Op 9006 Oil Pan : High – Low | 9.5 L – 8.5 L |
Minimum Required Lube System Capacity – Sump Plus Filters | 10.9 L | Angularity of Standard Oil Pan Front Down | 40 ° |
Angularity of Standard Oil Pan Front Up | 40 ° | Angularity of Standard Oil Pan Side to Side | 40 ° |
Type Injection System | BYC A Direct Injection | Maximum Restriction at Lift Pump | 102 mmHg |
Maximum Allowable Head on Injector Return Line | 508 mmHg | Total Drain Flow (Constant for All Loads) | 30 L/h |
Coolant Capacity – Engine Only | 7.2 L | Maximum Static Head of Coolant Above Engine Crank Centerline | 14 m |
Standard Thermostat (Modulating) Range | 82 – 95 ℃ | Minimum Pressure Capd | 69 kPa |
Maximum Top Tank Temperature for Standby / Prime Power | 104/100 ℃ | Cranking Motor (Heavy Duty, Positive Engagement) | 12 V/24 V |
——END—— |
Note: All Above Data are Just for Reference, All Data Might Change Without Notices or Updates, Please Contact Our Sales Team to Confirm All Details Via WhatsApp or Email.
What's the Standard Scopes of Supply?
With full ranges of emission standard from Euro 2 to Euro 7, Dongfeng Cummins producing 12 series generator engines, started from 3.9 liter engine, to 15 liter engine, covering the power range of 125HP to 650HP.
Dongfeng Cummins generator engine customize developing configurations for big vehicle OEMs in China, based on each of requirement, Dongfeng Cummins producing dozens of different configuration engines with same engine model number, which only SO-Shop Order will be different with each other, the SO number is the identify number of the engine configuration of each model.
Even with same engine model, different SO number engine can have very different configuration with each other, with different prices. Some of SO-Shop Order is not available for commercial market, such as restricted models (Usually for military specifications).
EMAC offering most common, cost effective models which also able to process the production in Dongfeng Cummins, which usually have following accessories as standard configuration.
Scopes of Supply of DCEC Generator Drive Engine |
|||
Air Intake System | 1. Air Intake Manifold | Exhuast System | 1. Exhuast Manifold |
2. Standard Air Filter | 2. Turbocharger | ||
3. Water-Air Intercooler | 3. Exhuast Elbow | ||
Starting System | 1. Starter Motor | Charging System | 1. Charging Alternator |
2. Starter Rely | 2. N/A | ||
Lubricating System | 1. Oil Pump | Cooling System | 1. Water Pump |
2. Oil Filter | 2. Engine Fan | ||
3. N/A | 3. Standard Radiator | ||
Engine Shut-Down System | 1. Engine Fuel Shut-Off Solenoid | Power Output System | 1. Flywheel |
2. N/A | 2. Standard Flywheel Housing | ||
Fuel System | 1. Fuel Transfer Pump | ||
2. High-Pressure Fuel Pump | |||
3. Fuel Filter | |||
------END------ |
What's the Available Optional Items?
Dongfeng Cummins only provides customize service for the large quantity orders or large OEMs, which means usually the order quantity are higher than 1000 units. For the small quantity engine project, EMAC provides customize services with our own resource and engineer team.
EMAC have rich experience on the customize developing, which provides abundant optional items based on the requirement of each project. The typical optional items are special Prestolite charging alternator, prestolite starter motor, Knorr Air compressor. Valeo air conditioning compressor, ECU output socket set, engine accelerate pedal etc.
Optional Accessories of DCEC Generator Drive Engine |
|||
Air Intake System | 1. Air Intake Pre-Heater | Exhuast System | 1. Muffler & Bellows |
2. Air Intake Shut-Off Valve | 2. Spark Arrestor Type Muffler & Bellows | ||
3. Heavy-Duty Air Filter | 3. DPF System | ||
4. Plateau Type Air Filter | 4. N/A | ||
Fuel System | 1. Coarse Filter | Lubricating System | 1. Oil Pre-Heater |
2. Fuel Pre-Heater | 2. N/A | ||
Starting System | 1. Manual Magnetic DC Contactor | Cooling System | 1. Silent Type Radiator |
2. Dual Ears Flywheel Housing | 2. Plateau Radiator | ||
3. Spring Starter Motor | 3. Salt-Spray Resistant Radiator | ||
4. Air Starter Motor | 4. Coolant Pre-Heater | ||
5. Hydraulic Starter Motor | 5. Jacket Water Heater | ||
6. Manual Magnetic DC Contactor | 6. N/A | ||
------END------ |
As part of EMAC, SinoGen focusing on generator set related business, from Generator drive engine power pack to complete generator set, from generator control panel to synchronizing cabinet, from super silent type generator set to mobile power trailer, SinoGen provides professional one-stop solution for everything customer needed for generator set.
For more information of our complete generator set products, you are welcome to visit SinoGen homepage: www.sino-gen.com
What's the Modifiable Items and Scopes?
As explained in the standard scopes of supply, Dongfeng Cummins not able to provide customize developing for small quantity projects or small OEMs, so EMAC helps SME OEMs to provide customize services, not only providing additional optional items, but also provides customize modification services to meet their requirements based on the exisiting engine SO number.
As flexible service ability is our core advantages, EMAC is very experienced and good at providing customize services, the common customize services are as below:
1: AIr Intake System: Change the air intake direction.
2: Air Exhuast System: We are able to change the turbocharger direction as the interaction on installation could be occured, also change change the air exhuast direction.
3: Lubricating System: Modify lubricating system is one of the most common requirement from customer, we can provide flat-type engine oil pan, to lower down total engine height, which usually required for special vehicles. For the standard engine oil pan, we also can change the direction of the engine oil pan.
4: Cooling System: There are lots of options for the engine cooling system, for the engine fan, we can provide customize for the material of engine fan (plastic fan or steel fan), wind direction of the engine fan (blower fan or suction fan ) and types of engine fan (mechanical fan or electric control fan).
5: Power Output System: Most of electronic controlled Dongfeng Cummins generator engines are comes with SAE#1 flywheel housing now, while lots of customers need SAE#2 flywheel because of the housing of transmissio is SAE#2, so we have to provide customzie services for those customer, which need to modify flywheel housing, flywheel and starter motor, we also have PTO integrated type flywheel housing available, which can output the whole power of the engine from the PTO on the flywheel housing, we can also provide modification of the mounting side of the starter motor.
6: Electric System: All of Dongfeng Cummins engines are comes with standard 24V electric system, while some customer need to modify the electric system into 12V, we can also modify the starter motor and alternator into appointed brand or appointed specifications.
EMAC is your reliable professional power system partner, feel free to contact our services team to get detailed information about our standard scopes of supply, optional items and modifiable parts for our Dongfeng Cummins generator engine, we are ready to explore the journey of our cooperation.
Modifiable components of DCEC 4B3.9-G1 Generator Drive Engine |
|||
Air Intake System | 1. Installation Position of Air Filter | Charging System | 1. 12V Charging Alternator for 12V Electric System |
2. Upgrade to Heavy-Duty Type Air Fitler | 2. Explosion-Proof Charging Alternator | ||
Exhuast System | 1. Position of Turbocharger | Lubricating System | 1. Oil Pan Position |
2. Water-Cooled Exhuast Manifold | 2. Number of Dipstick | ||
3. Water-Cooled Turbocharger | 3. Position of Dipstick | ||
Fuel System | 1. Upgrade to Fuel Fitler that Integrated with Fuel Transfer Pump | Starting System | 1. 12V Starter Motor for 12V Electric System |
Engine Shut-Down System | 1. 12V Solenoid for 12V Electric System | Power Output System | 1. Size of Flywheel Housing and Flywheel. |
2. Explosion-Proof Solenoid | 2. Dual-Ear Flywheel Housing (For Twin-Starter System) | ||
------END------ |
How to Order Engine to Replace Your Old Engine?
Type A: Engine Replacement Requirement (Original Engine is Dongfeng Cummins Engine).
This is most simple demand case, you just need to provide us the original engine name plate, and then we can easily check and confirm what exactly you need, and we also ensuring that the engine from us will be 100% same with your original engine. (In some case that the vehicle manufacturing modify the engine on their own, we are not able to supply the parts or the condition that modified by the vehicle manufacturer)
Type B: Engine Replacement Requirement (Original Engine is Cummins Engine but produced in UK, USA or other Cummins engine plant).
EMAC have rich experiences in replace the UK, USA or other engine plant produced engine, with Dongfeng Cummins produced Cummins engines, we required the original engine name plate photo to obtain the related information (at least we will need engine serial number, with engine model name only is useless for us, we are not able to provide quotation with engine model name only for the replacement project), and then we can check out the BOM list and all accessories of your original engine serial number, and then we can check and compare with the BOM list of our Dongfeng Cummins produced engine, choose the most closest SO number engine, and modify the parts that not same with your original engine, we have delivered hundreds of cases of replace the customer's original engine that produced in Cummins UK, USA or other engine plants with Dongfeng Cummins produced engines, you can refer to our video introduction on Youtube: https://youtu.be/dYVgRM5NsUo
We can NOT guarantee the engine produced by Dongfeng Cummins is exactly same with your original engine, but we can guarantee that all of engines from EMAC will have no problem with installtion and performance, which all of engines can works very well after replacement.
Type C: Engine Replacement Requirement (Original Engine is other brnad engines even gasoline engines).
EMAC also have rich experiences in replace the engine that not Cummins installed, these engines can be other brands such as Deutz, Caterpillar, Perkins, Komatsu or others, we even had experiences of replace gasoline engine with Dongfeng Cummins produced diesel engines.
This kind of appliaction is more complex and quite risky, EMAC can't do much thing due to lacking of information, the only thing we can guarantee is the performance after replacement, we check and compare the engine performance curve of original engine and our Dongfeng Cummins engine, and then we select the most suitable model for replacement. Due to we are lacking of the installation spaces and related accessories, we will send the both CAD and 3D drawing for our recommend engine model, and then customer have to evaluate the risky of replace the original engine with our engine, especially the risky of space, the possibile interactive when installation, and the risky of modify related coolant pipe, air pipes and wiring harness. Normally this kind of request consuming lots of energy and resource for us to carry on, also quite risky for us, so we will not work on the replacement quantity that below 50 units.
When your requirement is replacement, please tell our customer service team of what type of replacement you need, and provide us original engine name plate, the engine name plate is the necessary material before we start our business negotiations, we will NOT reply to all inquiry that even can't provide engine name plate.
How to Choose the Right Dongfeng Cummins Generator Engine for You?
To choose a suitable engine for truck, bus or special vehicle manufacturer is quite simple, because the buyer is the manufacturer, so usually they are quite flexible with space, pipes and wiring connections.
The following process are the standard process for us to select a suitable engine model for truck, bus or special vehicle manufacturer demand.
Step 1: We need basic information of the required engine, including rated power, rated speed and emission standard of the required engine.
Step 2: EMAC will evaluate the requirement and select the suitable engine model for customer, with engine data sheet, engine performance curve, CAD darwing, 3D model and budgetary quotation provided back to customer.
Step 3: Customer should check and compare the engine data sheet, performance curve and related drawing and confirm all details one by one. Most important thing is confirm the performance curve suitable for the requirement.
Step 4: After engine confirmed, we have to check and confirm the specifications of accessories one by one carefully, like the electric system specifications (12V or 24V), the detailed specifications of starter motor, charging alternator, air compressor, power steering pump, A/C compressor etc.
Step 5: Confirming the accessories positions and connections, customer need to check and confirm all positions are suitable for the project, such as engine fan, turbocharger, oil pan position, and connections of air pipe, coolant pipe, wiring harness etc.
Step 6: After confirming the engine performance, position, connection and specifications of all accessories, we will be able to provide accurate quotation for prototype and batch order. Prototype is strongly recommend to start the cooperation, to avoid the possible problem, risky on the engine with batch order.
Notes:
1: Technical support including technical training, onsite installation and commissioning services are avaiable with additional chargers.
2: We are able to supply complete powertrain system, including engine, transmission, transfer, axle, suspension etc, engine with transmission is highly recommended, because if we supply both engine and transmission, we can run simulations for the vehicle, which we usually will provide customer a simulation report, with the simulated result of Balanced Maximum Vehilce Speed and Maximum Grade Ability at different speed.
3: EMAC able supply complete chassis that integrate all powertrain system together, which can greatly reduce the manufacturer's design works and reduce the system mismatching risky.
Tips of Dongfeng Cummins Generator Engines!
Dongfeng Cummins is one of 50:50 joint venture of Cummins in China, its official Cummins factory that following high Cummins USA production and quality control standard, the Dongfeng Cummins factory swap every 5 years between appointed employee from Dongfeng Motor and Cummins. For more details, you can refer to the company introduction of DCEC-Dongfeng Cummins Engine Company.
Started the production of Cummins engines in China in 1980s, Cummins products has been in China for over 40 years, thousands of people have worked for Cummins China and some of them are very skilled experienced engineer, some of them resigned from Cummins to set up their own small workshops or assembly factories that focusing on producing copy Cummins engines.
Price is always not the problem for Chinese suppliers, there are many tickies to lower down the engine prices, such as supply self-rebuild engine as new engine, supply official RECON engine from Cummins as brand new engine, assembly the fake engine with after-market parts, supply lower power model engine and change the name plate etc. You can find plenty of suppliers on alibaxx.com with various prices, the classic Chinese business style is tell you that he give you very low price and not make profit, how can you believe a businessman will make business that have no profit? They gave you low price not becuase they share their profit to you?
As a matter of fact, Chinese supplier often make their profit much more higher by selling the low quality copy products as genuine brand new products! Always remember YOU GET WHAT YOU PAID!
The key point of dealing with Chinese supplier, is to find and choose reliable business partner that will not cheat you for short-term business, but with vision of build long-term career and life-time partnership, EMAC is one of the reliable partner that not chasing for short-term high profit, but we cares our decades of good reputation and we working with all business partners not as supplier and customers, but as close friend and brothers.
FAQ of Dongfeng Cummins Generator Engines?
DCEC is the short name of Dongfeng Cummins Engine Company, take the first letter of each word, it comes with DCEC as short name, for more details about DCEC, you can refer to the company introduction of DCEC-Dongfeng Cummins Engine Company.
2: Does your engines copy products?
This question is quite often from customer that not familiar with Cummins, Cummins have over 20 joint ventures in China now, and 6 of them are engine joint venture, which Cummins owns 50% share of all of those 6 engine plants, so all of the Cummins factories in China are genuine Cummins factory, that following high Cummins USA production and quality control standard. EMAC is the business partner of DCEC, and we are supplying powertrain and engine power pack based on genuine brand new engines from Dongfeng Cummins for all different applications, EMAC is a reliable and professional power system solution provider that offering abundant various options.
3: Why there are so many companies selling Cummins engines?
There are plenty of companies selling Cummins engines in China, especially on the B2B platform, such as alibaxx.com, you can find plenty suppliers there with attractive prices, Cummins products has been in China for over 40 years, thousands of people have worked for Cummins China and some of them are very skilled experienced engineer, some of them resigned from Cummins to set up their own small workshops or assembly factories that focusing on producing copy Cummins engines. You should be careful of being cheated by the attractive prices with copy or rebuild products.
4: How can I identify if the engine genuine or not?
Cummins keep working on the updating its identification system, technically, there are serial number on all key components of Dongfeng Cummins engines, including cylinder block, cylinder head, turbochager, fuel pump, starter motor, alternator, you can collecting the serial number (NOT part number), and then call DCEC call service center to identify if all the numbers are matching to the original number or not. EMAC continuously updating the latest Cummins identification system, you are welcome to following our website or keep in touch with our customer services team to get latest information from Cummins.
5: What's the warranty policy for the engines supplied by EMAC?
EMAC following standard Dongfeng Cummins warranty policy, which will update sometimes, you can following us to get the latest warranty policy from Dongfeng Cummins. Generally EMAC only afford the defective parts cots and shipping costs for the warranty claims, labor costs and transportation costs are not covered in the warranty.
However, EMAC is building our own independant after-sales service system now, which aims to build a global service network, with resouces of global repair and engineering network, which we believe can bring all business partner benifit in future, helping all of OEM manufacturers expanding their market into global market without worries of lacking after-sales service network. For more details about our Global Service, you can visiting www.global-service.com.
6: How about the future parts supply for the engines? Are you able to supply parts?
As the support team of EMAC's business scope, PartMac is our own brand that focusing on genuine parts directly from all brand factories.
All of EMAC’s partners are facing big challenges with sourcing original spare parts in China. Committed to providing truthworthy and professional after-sales support and parts supply, PartMac is a sub-brand of EMAC group that focusing on parts business. Stick to original parts only, PartMac can’t give any solution on CHEAP PARTS, but you don’t need to worry about any quality issues with every single parts from PartMac.

Engine Sale Manual

Installation Drawing

Installation Manual

Operation Manual

Parts Catalogue
