D2840LE401 marine engine by MAN D – technical overview and OEM parts

The D2840LE401 is a robust V10 diesel platform engineered for dependable propulsion and auxiliary duty. While it belongs to the MAN D D2840 series, the D2840LE401 stands out for its balance of compact installation dimensions, responsive torque delivery, and proven fuel efficiency in marine environments. Shipowners and technical buyers value this engine type for its durability in continuous operation and its straightforward service concept that supports high availability across diverse applications.

As a MAN D D2840 variant, the D2840LE401 brings modern refinements to a well-established architecture, making it a compelling choice for operators who need reliable power in demanding conditions. Whether configured for propulsion or as a genset prime mover, the D2840LE401 diesel engine is designed to deliver steady performance at commercial duty cycles, low operating costs, and a long service life.

D2840LE401 technical characteristics and performance

The D2840LE401 is a 10-cylinder V-configuration, 4-stroke, turbocharged and charge-air-cooled marine diesel engine. Its compact V10 layout enables efficient use of engine room space while maintaining excellent power density. Depending on rating and setup, the D2840LE401 offers strong mid-range torque and stable output across common marine speed bands. Typical rated speeds are in the 1500–2100 rpm range, aligning with propulsion gearboxes, controllable-pitch propellers, and marine alternators. Displacement for the D2840 platform is in the high-teens liter class, supporting robust cylinder filling and efficient combustion under continuous load.

Core construction features include a heavy-duty cast-iron crankcase, replaceable cylinder liners, efficient turbocharging matched to the charge-air cooler, and a fuel system calibrated for precise delivery and clean combustion. The result is reliable cold starting, steady running behavior, and optimized specific fuel consumption. Many installations adopt mechanical governing or electronic assistance for fine control, depending on vessel class and classification requirements.

Because of its balanced power-to-weight ratio and economical operation, the D2840LE401 MAN D marine engine is widely selected for commercial vessels that require dependable propulsion and auxiliary power on tight turnaround schedules. Its marine-optimized cooling and lubrication circuits are engineered to cope with continuous duty, harbor maneuvering, and dynamic load changes.

Applications of the D2840LE401 MAN D marine engine

Operators deploy the D2840LE401 across a broad range of maritime and stationary roles. In shipping, you will find it in workboats, coastal cargo vessels, passenger ferries, pilot boats, and offshore support craft, where quick throttle response and reliable continuous service are crucial. As a generator drive, the D2840LE401 diesel engine is also used in onboard auxiliary power plants and shore-based installations, providing stable electrical output for hotel loads, cranes, pumps, and mission systems. Its straightforward service access and widely available D2840LE401 OEM parts make lifecycle planning predictable for fleet managers.

• · V10, 4‑stroke, turbocharged and charge‑air‑cooled diesel engine
• · Compact footprint with high power density
• · Strong mid‑range torque for maneuvering and constant‑speed duty
• · Typical rated speeds 1500–2100 rpm, depending on configuration
• · Efficient fuel consumption under commercial load profiles
• · Proven in propulsion, auxiliary gensets, and stationary power
• · Service-friendly layout and comprehensive documentation
• · Broad global expertise in D2840LE401 MAN D marine engine support

D2840LE401 diesel engine: why operators value this platform

For fleet operators, the D2840LE401 offers a practical combination of output, durability, and maintainability. Its V10 geometry reduces vibration and supports smoother running compared with many in-line configurations at similar outputs. The cooling and lubrication systems are optimized for long intervals between overhauls when maintained to spec. Components are designed for predictable wear and repeatable servicing, reducing downtime during planned maintenance windows.

In addition, the D2840LE401 MAN D diesel engine integrates well with common marine transmissions, shaft lines, and alternators, making newbuild and retrofit projects efficient. From tugs and utility vessels to coastal freight and passenger applications, the engine’s versatility simplifies spare parts stocking and crew training across mixed fleets.

OEM spare parts suitable for D2840LE401: performance, reliability, service life

For consistent performance and long-term reliability, using OEM spare parts suitable for D2840LE401 is essential. Components that are engineered to the engine’s exact tolerances and materials interact correctly within the combustion chamber, fuel system, turbocharger, and cooling circuits. This precision sustains target power output, keeps emissions in check, and limits unexpected downtime caused by dimensional deviations or incompatible materials.

Key systems benefit directly from OEM spare parts suitable for D2840LE401: injectors maintain correct spray patterns and atomization; pistons, rings, and liners preserve compression and oil control; pumps and thermostats regulate thermal stability; filters protect high-value internals from harmful particulates. Correct fitment also streamlines installation, reduces rework, and supports consistent maintenance records—critical for classification audits and predictable lifecycle costs.

MOPA is a reliable partner for OEM spare parts suitable for D2840LE401. With technical expertise across the MAN D D2840 family, MOPA supports purchasers and superintendents with accurate parts identification, swift logistics, and application advice tailored to propulsion or genset duty cycles. This ensures that your D2840LE401 diesel engine remains efficient, compliant, and ready for service.

Conclusion: D2840LE401 MAN D marine engine and OEM spare parts suitable for D2840LE401

The D2840LE401 delivers a dependable blend of power density, fuel efficiency, and serviceability for commercial marine propulsion and auxiliary power. Its V10 platform, robust construction, and versatile integration make it a trusted choice for operators seeking stable performance across varied duty profiles.

To preserve this performance over the long term, rely on OEM spare parts suitable for D2840LE401. MOPA supports your fleet with the correct components and technical guidance, helping your D2840LE401 remain efficient, reliable, and ready for demanding operations.