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Genuine Cummins ISM11E4-308 Engine Assembly: The Heavy-Duty 10.8L Solution
The Cummins ISM11E4-308 engine represents a highly efficient segment of the 10.8L M11 series manufactured by the Xi'an Cummins (XCEC) joint venture. Designed specifically for commercial fleets, logistics networks, and heavy machinery, this 308HP power plant balances fuel economy with structural durability. As a dedicated Cummins ISM11E4-308 supplier, HekoPower provides complete, factory-tested engine assemblies and genuine overhaul components directly from China.
Unlike older electronic systems, this iteration integrates advanced electronic management to meet strict Euro IV emission protocols. This makes it an ideal replacement engine for logistics trucks and vocational vocational vehicles.
Tech Specs of Cummins ISM11E4-308
General Engine Data
Engine Model: Cummins ISM11E4 308
Type: 6 Cylinders in Line
Displacement: 10.8 L
Bore * Stroke: 114 * 144.5
Net Weight (with flywheel & alternator): 940 Kg
Overall Dimension: 1135mm*825mm*1159mm
Key Performance Data
Rated Power: 226 kW/308 HP
Rated Speed: 1900 rpm
Torque/Rated Speed: 1150 N.m @ 1900 rpm
Max. Torque/Speed: 1500 N.m @ 1000-1400 rpm
More Technical Data
Certification: Euro IV
Aspiration: Turbocharged & Charge Air Cooled
Fuel System: Cummins Fuel System/EMC876
Compression Radio: 16.2:1
Starting System: Electrical Starting Motor 24V(750A)
Lowest Starting Temp Without auxiliary system: -10℃/-25℃
Cooling Method: Water cooled
Firing Order: 1-5-3-6-2-4
ISM11E4-308 EMC876 Electronic Control System
A major differentiator for the XCEC Cummins ISM11E4-308 engine is its specialized control module. The ISM11E4-308 EMC876 electronic control system acts as the primary brain of the engine. It constantly monitors real-time changes in air intake density, fuel pressure, and engine load. By processing sensor data instantly, the EMC876 minimizes fuel waste. It continuously shapes the injection cycles to match current road conditions, preventing the over-fueling commonly seen in older mechanical diesel units.
ISM11E4-308 Fuel Consumption Realities
Operating economy directly dictates fleet profitability. The ISM11E4-308 fuel consumption rate averages between 188 to 195 grams per kilowatt-hour (g/kWh) under peak load conditions. In practical applications, this translates to noticeable savings over long haul operations. The combination of optimized cylinder liners and the Euro 4 Cummins 308 HP diesel engine price point makes this specific model a highly cost-effective choice for fleets looking to lower their total cost of ownership.
Technical Comparisons: 308HP vs. Higher Output ISM Platforms
Selecting the correct engine requires an understanding of how the 308HP calibration fits within the broader 10.8L XCEC ecosystem. Buying an overpowered or underpowered variant often leads to premature component wear or poor fuel returns.
Tuning and Structural Differences within the XCEC ISM11 Series
The entire XCEC ISM11 platform shares a foundational engine block, a single camshaft overhead design, and identical cylinder dimensions. However, the difference between the ISM11E4-308 commercial vehicle engine and its higher-output siblings, such as the ISM11E4-345 or 385, comes down to electronic programming, turbocharger wastegate configurations, and fuel injector flow capacities.
The 308HP variation operates under lower thermal stress. This lower stress profile reduces internal wear on pistons, rings, and main bearings, giving it a longer service life before requiring a full overhaul.
Why Choose the 308HP Variant Over the ISM11E4-385?
For standard regional distribution and flat-terrain logistics, the 385HP model is often inefficient. It burns more fuel to maintain speeds that the 308HP model handles comfortably within its optimal RPM range. The 308HP variant reaches its peak torque of 1500 Nm at just 1000 RPM. This allows fleet operators to downshift less frequently while maximizing fuel economy on predictable transport routes.
Real Application Scenarios: Where the ISM11E4-308 Excels
The operational environment determines how well an engine delivers on its performance design. The Cummins 308HP heavy duty truck engine is optimized for specific payloads and duty cycles.
ISM11E4-308 Engine for Dongfeng Truck Integration
A common use case for this power plant is as a direct replacement engine for Dongfeng heavy duty trucks. Thousands of regional Chinese and international logistics vehicles rely on this exact engine block footprint. The mounting positions, flywheel housing dimensions, and wiring harness interfaces align perfectly with Dongfeng chassis designs. This compatibility cuts installation time significantly compared to converting to an alternative engine brand.
Specialized Fleet Duty: Cargo, Logistics, and Mixer Fleets
Beyond standard freight, this unit serves as a highly reliable Cummins ISM11E4-308 engine for cargo trucks and regional distribution vans operating under a 30 to 40-ton Gross Vehicle Weight rating. It also provides the consistent low-end torque required for heavy vocational equipment like concrete mixers, dump trucks, and municipal maintenance vehicles where steady power delivery matters more than high highway speeds.
Maintenance and Replacement Tips: Extending Core Engine Life
Investing in an original XCEC ISM11E4-308 engine assembly requires a proactive maintenance plan to ensure you reach the engine's million-kilometer design life. Neglecting early signs of component wear can lead to catastrophic block damage.
Essential Parts: Injectors, Turbochargers, and Filters
The high-pressure fuel system demands strict filtration. Utilizing low-grade filters lets micro-particles bypass security checks, causing accelerated wear on your Cummins ISM11E4-308 injector replacement units.
Similarly, the turbocharger requires clean oil to cool its high-speed bearings. If you notice a sudden drop in boost pressure or changes in exhaust color, inspect the system immediately. Working with an authorized Cummins ISM11E4-308 turbocharger supplier ensures your replacement parts can withstand the high exhaust temperatures of the Euro IV emission cycle.
When to Deploy a Cummins ISM11E4-308 Overhaul Kit
When oil consumption increases and cylinder compression drops across multiple cylinders, installing a Cummins ISM11E4-308 overhaul kit becomes necessary. A standard out-of-frame kit should feature genuine ISM11E4-308 engine parts, including new cylinder liners, pistons, rings, main bearings, and a complete upper and lower gasket set. Rebuilding with original parts restores factory compression specifications and seals the engine against internal fluid leaks.
Procurement Logistics: Sourcing Factory-Direct from China
HekoPower streamlines global sourcing logistics for international repair shops, fleet operators, and parts distributors requiring reliable access to heavy machinery components.
Understanding the Cummins ISM11E4-308 Factory Direct Price
When you buy genuine Cummins ISM11E4-308 engine assemblies through HekoPower, you remove middleman markups. We leverage direct supply channels from the Xi'an manufacturing hub to provide competitive Cummins ISM11E4-308 wholesale prices. This cost structure gives international workshops the room they need to maintain profitable margins while offering end-users authentic, reliable equipment.
Export Packaging, Documentation, and Global Delivery Protocols
As an experienced Cummins ISM11E4-308 exporter, HekoPower manages the entire logistical process. Every complete engine assembly undergoes rigorous testing prior to being sealed in heavy-duty, anti-corrosion maritime crates. We handle all export customs paperwork, certificate of origin filings, and commercial shipping arrangements, ensuring a smooth delivery to your facility or port.
Cummins ISMe Series, original products from Xi’an Cummins Joint Venture Plant (XCEC), since 1986, 50% owned by Cummins USA, under Cummins Technical & Product Line. This series mainly includes ISME308-30, ISM11E4 308, ISME335-30, ISME345-30, ISM11E4 345, ISM11E5 345, ISME 360-30, ISME 380-30, ISME 385-30, ISM11E4 385, ISM11E5 385, ISM405E-20, ISME 420-30, ISM11E4 420, ISM11E5 420, ISM11E4 440, ISM11E5 440.
Frequently Asked Questions Regarding the Cummins ISM11E4-308
What specific oil grade is recommended by the ISM11E4-308 maintenance guide?
The engine requires a high-quality 15W-40 heavy-duty diesel engine oil meeting Cummins Engineering Standard CES 20078 or higher. If you operate in cold climates, use a 10W-30 or 5W-40 synthetic equivalent to ensure proper oil flow during cold starts.
Can I upgrade my Euro III ISM engine to an ISM11E4-308 assembly?
Yes, but it requires swapping the electronic wiring harness and installing the compatible EMC876 electronic control module. The physical engine blocks use matching mounting configurations, but the emission sensors and fuel management systems differ between the two generations.
How can I confirm I am purchasing a genuine Cummins ISM11E4-308 engine?
Every authentic engine features a stainless-steel data plate stamped with a unique Engine Serial Number (ESN) by the factory. HekoPower verifies this ESN through the official system before shipment, allowing you to easily confirm the engine's build history and legitimacy.
