Vetus M4.56 Marine Diesel Engine 52 HP – Reliable, Efficient & Powerful | JB Marine GmbH
The Vetus M4.56 Marine Diesel Engine (52 HP) is a highly efficient, 4-cylinder inboard diesel engine designed for sailboats, powerboats, and commercial vessels. As part of the trusted Vetus M-Line series, it delivers exceptional performance, smooth operation, and low fuel consumption, making it ideal for both leisure and professional marine applications.
Built for reliability and long-term endurance, the M4.56 combines proven marinization technology, quiet operation, and easy maintenance, all within a compact and lightweight design. Whether you’re refitting your vessel or outfitting a new build, the Vetus M4.56 offers a perfect balance of power, efficiency, and durability.
Reliable Marine Power, Engineered for Performance
With 52 horsepower at 3000 RPM and a 4-cylinder configuration, the Vetus M4.56 delivers smooth torque, quiet operation, and consistent propulsion under varying sea conditions.
It features an indirect cooling system for optimal thermal management, and its 110A marine alternator provides robust electrical power for onboard electronics.
The M4.56’s rugged cast-iron construction ensures long service life, while its front-mounted service points simplify maintenance — reducing downtime and ensuring smooth operation season after season.
Key Features & Benefits
Efficient & Powerful Performance
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Maximum output of 52 HP (38.3 kW) at 3000 RPM.
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4-cylinder configuration delivers excellent torque and balanced operation.
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Low fuel consumption of 244 g/kW.h, minimizing running costs.
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Reliable propulsion for sailboats, cabin cruisers, and workboats.
Advanced Cooling & Noise Reduction
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Indirect cooling system (optional keel cooling available).
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Water-cooled aluminum top cover reduces engine temperature by up to 15°C.
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Innovative air intake filter lowers induction noise by approx. 5 dB(A) for quieter cruising.
Compact, Durable & Lightweight Design
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Compact footprint for easy installation in limited engine compartments.
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Rugged 4-cylinder construction withstands harsh marine conditions.
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High-output 110A alternator provides a stable onboard electrical supply.
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Dry weight: 199 kg (including gearbox).
Easy Maintenance & Installation
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Front-mounted service points for easy access to filters and dipsticks.
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Self-bleeding fuel system simplifies fuel handling and ensures quick restarts.
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Compatible with multiple gearbox configurations:
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Standard: TM345(A) (2/2.47:1)
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Optional: ZF12M, ZF15MIV, TMC60P
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Versatile Applications & Compliance
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Suitable for both leisure and commercial vessels.
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Certified under EU-RCD II and SOLAS for safety and environmental compliance.
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Optional saildrive compatibility for flexible marine installations.
Technical Specifications
| Specification | Details |
|---|---|
| Maximum Output (Flywheel) | 38.3 kW (52 HP) |
| Maximum Output (Prop Shaft) | 37.1 kW (51 HP) |
| Maximum RPM | 3000 |
| Number of Cylinders | 4 |
| Bore × Stroke (mm) | 78 × 92 |
| Displacement | 1758 cm³ |
| Fuel Consumption | 244 g/kW.h |
| Alternator | 12V – 110 Amps |
| Cooling System | Indirect Cooling (Keel Cooling Optional) |
| Standard Gearbox | TM345(A) (2/2.47:1) |
| Optional Gearboxes | ZF12M (2.14:1), ZF15MIV (2.13/2.99:1), TMC60P (2/2.5:1) |
| Dry Weight (Incl. Gearbox) | 199 kg |
| Max. Installation Angle (Backwards) | 15° |
| Max. Continuous Lateral Inclination | 25° |
| Max. 5-Minute Lateral Inclination | 30° |
| Suction Height (Fuel Lift Pump) | 1.5 m |
| Warnings/Alarms | Oil Pressure, Coolant & Exhaust Temp, Charging Current |
| Control Lights | Pre-heating |
| Calorifier Connection Kit | Optional |
| Certifications | EU-RCD II, SOLAS |
Why Choose JB Marine GmbH for Your Vetus M4.56 Engine
At JB Marine GmbH, we provide genuine Vetus marine diesel engines with full manufacturer warranties, technical expertise, and fast worldwide delivery.
Our team specializes in helping you select the right propulsion system for your vessel — ensuring optimal performance, installation support, and after-sales service.
What You Get with JB Marine GmbH
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Authentic Vetus M4.56 Marine Diesel Engine (52 HP)
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5-year manufacturer warranty for complete peace of mind
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Professional technical consultation and installation guidance
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Fast, secure global shipping (Germany, Europe, and beyond)
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Full access to genuine Vetus parts and maintenance kits
Warranty Information
All Vetus marine diesel engines sold by JB Marine GmbH include the official 5-year manufacturer warranty, covering material defects and performance reliability.
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Standard Warranty: 5 Years or 1500 Hours (whichever comes first)
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Extended Warranty Options: Available upon request
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Support: Contact our service team for warranty registration and maintenance plans
Frequently Asked Questions (FAQ)
What is the price of the Vetus M4.56 marine diesel engine?
Pricing depends on configuration and gearbox options. Contact JB Marine GmbH for the latest price and availability.
Is this engine suitable for commercial vessels?
Yes — the M4.56 is widely used in both leisure and commercial boats, known for reliability, low fuel use, and easy serviceability.
Are genuine Vetus parts included?
Absolutely. All Vetus engines from JB Marine GmbH come with genuine Vetus components for peak performance and longevity.
How can I order the Vetus M4.56 engine?
You can order directly from us via our website or by contacting our sales team for a quotation and delivery estimate.
Do you ship internationally?
Yes — we offer standard, express, and freight shipping across Germany, Europe, and selected international destinations.
Order Your Vetus M4.56 Marine Diesel Engine 52 HP Today
Experience reliable marine power with the Vetus M4.56 — a proven 4-cylinder diesel engine that combines performance, efficiency, and long-term durability.
Contact JB Marine GmbH today for pricing, stock availability, and expert installation advice.
Visit https://jbmarinegmbh.de/ to explore our complete range of Vetus marine diesel engines for sale and upgrade your vessel with trusted Dutch engineering.
