Details
Cummins ISDe300-40 Diesel Engine for Truck and Commercial Applications
The Cummins ISDe300-40 diesel engine is a high-performance 6.7L power unit designed for medium and heavy-duty commercial vehicles. As part of the Dongfeng Cummins (DCEC) engine lineup, it delivers 300HP (221kW) with strong torque output, making it a reliable solution for logistics fleets, long-haul transport, and bus applications.
Unlike generic catalogue descriptions, this engine is engineered for real-world operational efficiency, balancing fuel economy, durability, and emission compliance under Euro IV standards. For buyers seeking a dependable replacement engine or fleet upgrade solution, the ISDe300-40 stands out as a cost-effective and proven option.
Tech Specs of Cummins ISDe300-40
General Engine Data
Engine Model: Cummins ISDe300-40
Type: 4 Cylinders in Line
Displacement: 6.7 L
Bore * Stroke: 107 * 124
Net Weight (with flywheel & alternator): 509 Kg
Overall Dimension: 901mm*723mm*815mm
Key Performance Data
Rated Power: 221 kW/300 HP
Rated Speed: 2500 rpm
Idle Speed: 600-800 rpm
Fuel Consumption @ Rated Power: 195 g/Kw.h
Max Continuous Running Altitude: 3000 m
Max. Torque/Speed: 1100 N.m @ 1400 rpm
Max. No-load Governed Speed: 2850 rpm
More Technical Data
Certification: Euro IV
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Bosch Direct Injection (HPCR)
Compression Radio: 17.3:1
Starting System: Electrical Starting Motor 24V(750A)
Lowest Starting Temp Without auxiliary system: -12℃/-25℃
Cooling Method: Water cooled
Engine Cooling Fluid Volume: 9.4 L
Key Features and Technical Advantages
High-Pressure Common Rail (HPCR) Fuel System
The ISDe300-40 adopts a Bosch high-pressure common rail fuel system, ensuring precise fuel injection and improved combustion efficiency. This results in:
- Lower fuel consumption (approx. 195g/kW·h)
- Reduced emissions
- Stable performance under varying load conditions
Turbocharged Intercooling System
Equipped with a turbocharger and intercooler, the engine maintains optimal air intake efficiency, delivering consistent power output even in high-altitude or heavy-load environments.
Reliable Performance for Harsh Conditions
Designed for durability, the engine supports:
- Cold start capability down to -12°C
- Operation at altitudes up to 3000 meters
- Long service intervals for reduced maintenance downtime
Applications of ISDe300-40 Engine
One major weakness in competitor pages is the lack of real application context. This engine is widely used in:
Commercial Transport Vehicles
- Heavy-duty trucks for long-distance logistics
- Freight transport vehicles
Bus and Passenger Transport
- City buses and intercity coaches
- Engine repowering for fleet upgrades
Industrial and Auxiliary Equipment
- Generator sets
- Water pump systems
- Construction machinery
This diversity increases its value for international distributors and OEM buyers
ISDe300-40 vs Other Cummins Engines
ISDe300-40 vs ISBe Series
- ISDe300-40: Better fuel efficiency and emission control
- ISBe engines: Simpler structure but less advanced fuel system
ISDe300-40 vs ISLe Series
- ISLe: Higher displacement and power range
- ISDe300-40: More cost-effective and lightweight
Maintenance, Lifespan, and Service Manuals
The ISDe300 engine lifespan typically exceeds 500,000 kilometers with proper maintenance. HekoPower provides the Cummins ISDe300-40 service manual PDF and a detailed ISDe300-40 parts list and diagram upon purchase to ensure your local mechanics can maintain the unit effectively.
Common Maintenance Tips
- Fuel Quality: Given the sensitivity of the Bosch HPCR system, always use high-grade diesel.
- Oil Changes: Regular intervals are required to protect the ISDe300-40 221KW 300HP water-cooled engine from overheating.
- SCR Maintenance: Ensure AdBlue/DEF quality is maintained to avoid "limp mode" errors.
Why Choose HekoPower as Your Cummins ISDe300-40 Supplier?
As a leading Cummins engine exporter in China, HekoPower isn't just about the Cummins ISDe300-40 price. We provide a 12-month warranty on all ISDe300-40 original wholesale units.
- Bulk Supply: We are a bulk Cummins diesel engine supplier capable of equipping entire logistics fleets.
- Technical Support: We offer an ISDe300-40 engine technical support and installation guide to help international distributors.
- Authenticity: We guarantee DCEC ISDe300-40 genuine assembly, avoiding the risks associated with refurbished or "gray market" engines.
DCEC ISDe Series, original products from Dongfeng Cummins Engine Plant (DCEC), Cummins Joint Venture Plant since 1986, 50% shareholding by Cummins USA. This series mainly includes ISDe140-30, ISDe140-40, ISDe160-30, ISDe160-40, ISDe180-30, ISDe180-40, ISDe185-30, ISDe185-40, ISDe200-30, ISDe210-30, ISDe210-40, ISDe230-30, ISDe245-30, ISDe270-30, ISDe285-30, ISDe300-40.
Frequently Asked Questions (FAQ)
What is the displacement of Cummins ISDe300-40?
It has a displacement of 6.7 liters.
What vehicles use ISDe300-40?
Primarily Dongfeng trucks, buses, and commercial transport vehicles.
What is the fuel consumption rate?
Approximately 195g/kW·h depending on operating conditions.
