Vetus M4.45
42 HP (31.0 kW)
Powerful four-cylinder diesel for larger sailboats and powerboats. The M4.45 combines strong performance with compact dimensions and low weight.

Specifications
Power
42 HP
31 kW
Cylinders
4
4-stroke diesel
Displacement
1.14L
Weight
155 kg
Cooling
Freshwater cooled
Fuel System
Indirect injection
Alternator
12V marine alternator
About the M4.45
The Vetus M4.45 delivers 42 HP from the same compact four-cylinder block as the M4.35, providing significantly more power without increasing the engine's physical footprint. This makes the M4.45 an excellent choice for owners who need more performance from an existing engine bay, or for new builds where space is at a premium.
The engine maintains all the refinement of the M-Line platform — water-cooled top cover, low noise levels at cruising speed, and HVO fuel compatibility. The additional power output is achieved through optimised turbocharging and fuel delivery, giving the M4.45 strong acceleration and the ability to handle heavier displacement vessels confidently.
Available through Luxfords in shaft-drive and saildrive versions, the M4.45 is supported by comprehensive technical advice on engine selection, gearbox matching, and propeller sizing to ensure optimal performance for your vessel.
Key Features
Standard Equipment
- Water-cooled aluminium top cover
- High-output marine alternator
- Instrument panel
- Flexible engine mountings
- Air inlet filter housing