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VETUS M2.13 – Marine Diesel Engine 12 HP
VETUS M2.13 – 12 HP is a compact 2-cylinder marine diesel engine based on a proven Mitsubishi industrial block, specifically marinized for sailboat auxiliary propulsion. This 12 HP unit features a sophisticated top-mounted cooling system and an aluminum cover to reduce radiant heat and engine room noise, delivering a smooth and quiet sailing experience for small displacement hulls.
- Internal Architecture Dimensions: 2-Cylinder Inline 635cc Displacement.
- Standard Engine Block Architecture: Naturally Aspirated Freshwater Cooled.
- Intelligent Fuel Management System: Self-bleeding mechanical fuel system.
- Vessel Hull Integration Guide: Best for small sailboats and coastal day-sailers.
- Reliability And Service Plan: VETUS 5-year limited engine warranty.
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Description
VETUS M2.13 12 HP – Ultra-Lightweight Auxiliary Diesel
Solving the auxiliary power needs of small sailboats and weekenders, the VETUS M2.13 delivers 12 HP at 3000 RPM. This compact twin-cylinder engine emphasizes mechanical simplicity and exceptionally low noise levels, thanks to the integrated water-cooled top cover that dampens mechanical clatter. For the American sailor, the M2.13 offers a “peace of mind” propulsion solution that is easy to install and maintain, making it a premier choice for repowering classic US-built small craft where engine room space is at an absolute premium.
Fully compliant with USA EPA Tier 3 regulations, the M2.13 utilizes a robust Mitsubishi-based architecture to ensure long-term durability in demanding maritime environments. The engine features a closed-loop freshwater cooling system and a high-grade aluminum heat exchanger designed to withstand the corrosive effects of American coastal air. With its standard 75A alternator, this engine ensures that essential electronics and safety equipment remain powered, providing the reliability required for the American day-sailing and coastal cruising community.
Core Technical Specifications
- Maximum Output: 11.8 HP at 3000 RPM.
- Displacement: 38.8 cubic inches (0.635 Liters).
- Configuration: 2-cylinder in-line, 4-stroke diesel.
- Aspiration: Natural aspiration for simplicity.
- Dry Weight: Approximately 216 lbs (excluding gear).
- Electrical: 12V / 75A alternator standard.
- Compliance: EPA Tier 3 and USCG compliant.
- Bore and Stroke: 3.00 x 2.76 inches.
VETUS M2.13 Full Specs
| Engine type | 2-Cylinder In-line (Mitsubishi Base) |
| Displacement | 0.64L (635 cc) |
| Bore x stroke | 76 x 70 mm |
| Horsepower | 12 hp (8.8 kW) |
| Rated rpm | 3000 rpm |
| Aspiration | Naturally Aspirated |
| Compression ratio | 23.0:1 |
| Fuel system | Indirect Injection |
| Recommended fuel | Diesel (EN 590) |
| Ignition/Firing Order | Compression / 1-2 |
| Alternator | 12V, 75 Amp |
| Gear ratio/Drive | 2:1 / 2.4:1 / 3:1 |
| Transmission | Technodrive TMC40 |
| Dry weight | 98 kg (216 lbs) |
| Flywheel housing | SAE 5 (modified) |
| Steering | Mechanical / Hydraulic compatible |
| Coolant capacity | 2.2L |
| Exhaust system | Water-injected wet exhaust (40 mm) |
| Cooling system | Indirect cooling (Heat exchanger) |
| Lubrication | Forced lubrication |
| Oil capacity | 3.1L |
| Emissions rating | EU RCD II / BSO II |
VETUS M2.13 Service & Performance Guide
What is the fuel consumption of the VETUS M2.13?
The M2.13 consumes approximately 0.7 gallons per hour at its maximum 3,000 RPM. This 0.5-liter two-cylinder naturally aspirated engine is built for maximum economy and simplicity. Cruising at 2,200 RPM significantly reduces fuel burn while providing enough torque to maintain steerage in light wind and current conditions.
What oil grade is required for the VETUS M2.13?
This model requires 2.3 quarts of SAE 15W-40 oil satisfying API Service Class CF or higher. Consistent lubrication is vital for the mechanical governor and internal bearing surfaces. Change the oil and filter every 100 hours and always use genuine VETUS filters to ensure the internal bypass valve operates within factory specifications.
How does the VETUS M2.13 cooling system operate?
The system uses an indirect freshwater cooling circuit with a VETUS heat exchanger and integrated expansion tank. This ensures uniform cooling across the block, preventing localized hot spots. Periodically flush the freshwater side and replenish with a 50/50 mix of marine-grade coolant and distilled water.
What are the electrical system specifications for this engine?
The M2.13 is equipped with a 12V-75A alternator, which is remarkably robust for a 12 HP engine, ensuring house batteries stay topped up. This system is designed for high reliability in small auxiliary applications. Verify alternator belt tension regularly to prevent slipping under high electrical loads from navigation lights.
What are the physical dimensions and weight of the M2.13?
The dry weight is 194 lbs, with a total length of 17.8 inches and height of 20.3 inches. Its compact design features all maintenance points on one side for easier service in tight quarters. Maintain a rigid mounting setup to minimize the natural vibration typical of a small two-cylinder diesel block.
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