MAN Engines Completes Its 30-Litre Portfolio with the Launch of the New MAN D3872 Auxiliary Marine Engine

A new variant of the MAN 30-litre D3872 marine engine is the auxiliary engine for on-board power generators and diesel-electric propulsion systems.

(IN BRIEF) MAN Engines has launched the MAN D3872 as a new auxiliary engine for on-board power generation and diesel-electric propulsion, completing its 30-litre V12 portfolio and offering 840 kW at 50 Hz or 960 kW at 60 Hz with fast, stable load response and a compact, robust design suited to confined engine rooms. The engine meets IMO Tier II, IMO Tier III, and EU Stage V standards using flexible SCR or SCR-DPF aftertreatment, making it suitable for both offshore and regulated coastal markets, while also integrating seamlessly with hybrid and modular energy systems. Positioned alongside proven propulsion variants such as the MAN V12X series and E3872 stationary gas engines, the new D3872 Auxiliary provides shipyards and operators with a unified, future-proof engine family that spans main drives, auxiliary power, and hybrid solutions across the full 280–960 kW range.

(PRESS RELEASE) MUNICH, 6-Feb-2026 — /EuropaWire/ — MAN Engines has introduced the MAN D3872 as a new auxiliary power unit for maritime applications, expanding its 30-litre engine family with a purpose-built solution for on-board generators and diesel-electric propulsion systems. Based on the established V12 platform, the engine is designed to meet the specific requirements of workboats and large yachts while providing shipbuilders and operators with a consistent, technically unified engine range across propulsion and auxiliary power applications. With this addition, MAN Engines now completes its 30-litre portfolio, covering the full spectrum of performance needs within this class.

The D3872 benefits from the inherent strengths of the 30-litre V12 architecture, including a compact footprint, an excellent power-to-space ratio, and a robust mechanical design suited for continuous professional operation. These characteristics make it particularly well suited for demanding marine environments where reliability, durability, and efficiency are critical.

For auxiliary use, the engine is available in two power variants: 840 kW at 50 Hz in the MAN D3872 LE32x version and 960 kW at 60 Hz in the MAN D3872 LE33x variant. These configurations allow flexible integration into conventional shipboard electrical systems as well as modern diesel-electric propulsion concepts. The engine’s load response is engineered to be fast and stable, ensuring dependable power supply even under sudden changes in demand. Its resilient design enables consistent performance in challenging operating conditions, supporting smooth and uninterrupted vessel operations.

Thanks to its space-efficient design, the MAN D3872 LE3xx can be installed in confined engine rooms, making it suitable for space-critical vessels such as offshore support ships, ferries, workboats, and larger yachts. The ability to function both as a dedicated auxiliary generator and as part of a diesel-electric propulsion system provides additional flexibility for naval architects and system integrators at a time when hybrid solutions and modular energy concepts are becoming increasingly important.

A key feature of the new auxiliary variant is its compliance with global maritime emission regulations. The MAN D3872 meets IMO Tier II, IMO Tier III, and EU Stage V standards through the use of MAN’s modular and compact exhaust aftertreatment system. Depending on regional requirements, the engine can be equipped with either SCR or SCR-DPF technology, ensuring both regulatory compliance and efficient use of installation space. This flexibility makes the engine suitable for international offshore operations as well as for regulated coastal and inland waterways.

MAN Engines’ 30-litre platform is already widely used across marine and stationary applications. In the workboat sector, the D3872 has proven itself as a powerful and dependable main propulsion engine, while in the yacht market it is offered as the MAN V12X series with outputs of up to 1,618 kW (2,200 hp). The platform also serves as the foundation for MAN E3872 stationary gas engines used in power generation. With the introduction of the auxiliary D3872 variant, operators now have a fully integrated engine family that supports main propulsion, auxiliary power, and hybrid solutions on a single technical basis.

Reiner Roessner, Head of Sales at MAN Engines, said that the new MAN D3872 Auxiliary completes the company’s 30-litre portfolio and provides customers with a highly efficient, future-proof engine solution across a wide range of maritime applications. He emphasised that the engine is designed to deliver long-term reliability while supporting evolving requirements in performance, efficiency, and emissions reduction.

With this expanded product range, MAN Engines now offers a comprehensive portfolio for workboats and yachts, including high-performance propulsion engines for light, medium, and heavy-duty operations, auxiliary engines for generators and diesel-electric systems, hybrid solutions, dual-fuel engines for alternative fuels, and adaptable exhaust aftertreatment systems for worldwide deployment. This coordinated offering enables operators to select tailored solutions that balance efficiency, compliance, and operational flexibility.

The MAN D3872 auxiliary engine extends the company’s power coverage from 280 kW to 960 kW (381 hp to 1,306 hp) and complements its propulsion engine portfolio ranging from 221 kW to 1,618 kW (301 hp to 2,200 hp). The engine is now commercially available for maritime applications.

Media Contact:

Florian Schaffelhofer
Phone: +49 151 11766475
Florian.Schaffelhofer@man.eu
www.man-engines.com/press

SOURCE: MAN Truck & Bus