Vetus M4.45 Marine Diesel Engine with Saildrive – 42 HP
The Vetus M4.45 Marine Diesel Engine with Saildrive is a compact, reliable four-cylinder inboard diesel engine designed for sailing yachts, motor sailers, cruising boats, and marine repowering projects.
Delivering 42 HP (30.9 kW) at 3,000 RPM, the Vetus M4.45 features a 1.758-litre naturally aspirated diesel engine, mechanical indirect fuel injection, and freshwater cooling with a heat exchanger.
Combined with a compatible VETUS SP60 saildrive, the M4.45 provides efficient auxiliary propulsion, smooth operation, and practical installation options for recreational sailing vessels.
Why Choose the Vetus M4.45?
Reliable 42 HP Performance
The M4.45 produces strong low-speed torque, with a maximum of 106.4 Nm at 1,750 RPM, providing responsive maneuvering and dependable cruising performance.
Compact Four-Cylinder Design
Its inline four-cylinder construction offers smooth power delivery and a compact installation suitable for sailing yachts and cruising boats.
Easy Maintenance
The VETUS M-Line design features accessible service components, including filters, the seawater pump impeller, and engine oil servicing points.
Efficient Battery Charging
A 12V / 110A alternator supports onboard battery charging, with a second alternator available as an option on suitable configurations.
Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | VETUS |
| Engine Model | M4.45 |
| Engine Type | Four-stroke marine diesel |
| Configuration | Inline four-cylinder |
| Displacement | 1,758 cm³ / 1.758 litres |
| Maximum Flywheel Power | 42 HP / 30.9 kW |
| Maximum Propeller-Shaft Power | 40.8 HP / 30 kW |
| Rated Engine Speed | 3,000 RPM |
| Maximum Torque | 106.4 Nm at 1,750 RPM |
| Bore × Stroke | 78 × 92 mm |
| Compression Ratio | 22:1 |
| Fuel Injection | Mechanical indirect injection |
| Aspiration | Naturally aspirated |
| Cooling System | Freshwater cooling with heat exchanger |
| Electrical System | 12V |
| Alternator | 110A |
| Compatible Saildrive | VETUS SP60 |
| Alternative Saildrive | SD10, historical configuration |
| Standard Gearbox Option | TMC60P |
| Dry Weight with Standard Gearbox | Approximately 199 kg |
| Applications | Sailing yachts, motor sailers, cruisers and repowering |
The 199 kg weight refers to the engine with its standard gearbox, not necessarily the complete saildrive package.
Compatible Saildrives and Controls
The Vetus M4.45 supports the following manufacturer-documented saildrive options:
| Saildrive | Reduction Ratios |
|---|---|
| VETUS SP60 | 2.15:1 / 2.38:1 |
| VETUS SD10 | 2.23:1 / 2.49:1 |
Compatible conventional gearbox options include the TMC60P and ZF12M.
The engine also supports VETUS instrumentation for monitoring engine speed, warning alarms, coolant temperature, oil pressure, and battery charging.
The exact saildrive, reduction ratio, propeller, and control configuration must be confirmed before purchase.
Applications and Duty Rating
The Vetus M4.45 is suitable for sailing yachts, motor sailers, displacement cruisers, and compatible marine repowering projects.
Commercial or continuous-duty suitability must be verified against the manufacturer’s applicable operating requirements.
Price, Package Contents and Warranty
Price: Contact JB Marine GmbH for a quotation.
Depending on the selected configuration, the package may include the M4.45 engine, compatible saildrive, alternator, starter motor, cooling system, engine mounts, instrument panel, and selected installation accessories.
Warranty: Manufacturer or seller warranty coverage depends on the engine’s condition, production year, and supply arrangement. Details will be confirmed before purchase.
Frequently Asked Questions
How Much Power Does the Vetus M4.45 Produce?
The M4.45 delivers 42 HP (30.9 kW) at 3,000 RPM.
Is the Vetus M4.45 a 33 HP Engine?
No. The M4.45 is rated at 42 HP. The VETUS M4.35 is the 33 HP model.
Is the Vetus M4.45 Turbocharged?
No. It is a naturally aspirated diesel engine.
What Saildrive Is Compatible?
The VETUS SP60 is a documented saildrive option. Earlier documentation also identifies the SD10.
Is the M4.45 Suitable for Repowering?
Yes, provided the vessel’s engine mounts, saildrive installation, cooling system, exhaust, and propeller requirements are compatible.
Buy the Vetus M4.45 with Saildrive from JB Marine GmbH
Looking for a Vetus M4.45 marine diesel engine with saildrive for sale?
JB Marine GmbH provides quotations for VETUS marine diesel engines, compatible saildrive packages, installation accessories, and international shipping.
Contact our sales team with your vessel details, preferred saildrive ratio, required quantity, and delivery destination.
Request your Vetus M4.45 quotation today.
Website: https://jbmarinegmbh.de/
