175DF-M dual-fuel methanol engine

175DF-M – the high-speed dual-fuel engine with unmatched output, efficiency, and methanol capability

As regulations tighten and demand for sustainable propulsion grows, the maritime industry is accelerating its transition towards decarbonization and cleaner propulsion solutions. The 175DF-M delivers the performance you need today, with a clear path to compliance tomorrow.

Built on the proven 175D platform, it combines class-leading output with dual-fuel capability. This means no trade-offs: full power, lower emissions, and a future-ready propulsion system. With the flexibility to operate on diesel or switch to methanol as the primary fuel in response to evolving regulatory and market conditions, the 175DF-M helps accelerate your transition to carbon neutral operation while keeping your fleet running.

Power output up to

2,720

High methanol share

>90

Events

Everllence ExpertTalks

Marine

175DF-Methanol: Insights into first performance results

Wednesday, November 4, 2026

09:00 – 10:00 (CET (UTC+1))

Gain first-hand insights into the engine's operational behavior, the technologies enabling high methanol share operation, and how the 175DF-M supports efficient, flexible, and future-ready vessel concepts.

Learn more

Marine

175DF-Methanol engine: Latest insights

Join our ExpertTalk to explore the new 175DF-M — planned to be the most powerful and most efficient high-speed dual-fuel methanol engine on the market.

Learn more

Full power.

A benchmark in performance

Built on the proven 175D platform, the 175DF-M combines robust operation with advanced dual-fuel technology. The result is a high-performance engine that delivers reliable output, operational safety, and long-term efficiency in all operating conditions.

Proven 175D engine platform – the most powerful marine high-speed engine on the market
Optimized dual-fuel combustion system
Ready for maximum methanol operation (pilot ignition required)
High cylinder output in methanol mode
Double-walled methanol injection for maximum safety
High fuel efficiency

Full methanol.

Future-ready

Methanol is one of the leading future fuels driving the decarbonization of the maritime industry. Our advanced dual-fuel engines are engineered to unlock its full potential without compromising on performance.

Dual-fuel operation on methanol or diesel ensures maximum uptime and long-term flexibility
Advanced engine technology delivers optimized fuel efficiency across all operating conditions
The system is fully ready for maximum methanol operation utilizing pilot ignition
Very low environmental impact ensures compliance with current and future emissions regulations
Transitioning to clean fuel safeguards your investment against upcoming maritime climate targets

175DF-M dual-fuel

Benefits

Great versatility

Whether it is used for naval and governmental vessels, offshore operations, tugs, ferries, yachts, or fishing vessels, the 175DF-M adapts to a wide range of modern marine applications.

High flexibility

Dual-fuel capability allows operation on methanol or diesel, depending on availability, cost, or regulatory requirements. Operators can switch fuels without compromising performance, ensuring continuous operation even under changing market or supply conditions. This ensures maximum uptime while optimizing operating costs.

Very low emissions

With regulatory pressure increasing and key milestones approaching, engine decisions made today must remain viable for decades to come. The 175DF-M ensures compliance with current and future emissions standards, achieving Tier III NOx compliance without SCR in methanol operation, while an oxidation catalyst reduces formaldehyde and HCN emissions.

Rendering of 175DF-M with retrofit symbol

Retrofit compatible

Over 90% shared components enable conversion of existing 175D engines to methanol dual-fuel with minimal modifications, allowing a smooth transition to methanol operation.

Built on deep OEM expertise, the ability to retrofit transforms one of the most powerful high-speed engines into a future-ready, zero emission solution without compromising performance.
Straightforward maintenance and long time between overhauls (TBO) further reduce lifecycle costs and support long-term operational efficiency.