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VETUS VD4.120 – Marine Diesel Engine 122 HP
VETUS VD4.120 – 122 HP features a refined high-torque boat motor design based on the legendary Hyundai 4-cylinder common-rail platform. This 122 HP diesel utilizes a Variable Geometry Turbocharger (VGT) and a 16-valve DOHC head to deliver explosive mid-range grunt, offering the smoke-free operation and NMEA 2000® connectivity required for modern semi-displacement coastal cruisers and rapid patrol craft.
- Transom/Engine Integration Specification: Rated at 122 HP (89.7 kW) at 3800 RPM.
- Core Engine Mechanical Design: Inline 4-Cylinder 2.5L Turbocharged Aftercooled.
- High Precision Fuel Induction: Electronic Common-Rail Direct Injection.
- Optimal Marine Vessel Compatibility: Perfect for semi-displacement motorboats and fast tenders.
- Long Term Warranty Coverage: VETUS 5-year limited engine warranty coverage.
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Description
VETUS VD4.120 122 HP – Durable Auxiliary Propulsion Diesel
Bridging the gap between sailboat auxiliaries and motor yacht propulsion, the VETUS VD4.120 produces 122 HP at 2300 RPM through a robust, naturally aspirated 4-cylinder design. This Deutz-based engine is a cornerstone of the American cruising community, known for its longevity and simple mechanical operation in the most demanding offshore conditions. For the American sailor or trawler owner, the VD4.120 offers a fuel-efficient power plant that thrives under high-load transits, ensuring a stable and reliable journey across US coastal waters.
Adhering to USA EPA Tier 3 emission requirements, the VD4.120 focuses on mechanical longevity and clean combustion for a superior environment on deck. The engine features a robust heat exchanger and a dedicated freshwater cooling circuit, protecting internal components from the corrosive high-salinity air common in the Florida Keys and the Pacific Northwest. Its high-output electrical system ensures house battery banks remain charged, providing the power required for modern American marine electronics and onboard comfort systems.
Core Technical Specifications
- Maximum Output: 122 HP at 2300 RPM.
- Displacement: 246 cubic inches (4.04 Liters).
- Configuration: 4-cylinder in-line, 4-stroke diesel.
- Aspiration: Natural aspiration for peak simplicity.
- Dry Weight: Approximately 992 lbs (excluding gear).
- Electrical: 12V / 80A heavy-duty alternator.
- Compliance: EPA Tier 3 and USCG compliant.
- Bore and Stroke: 3.97 x 4.96 inches.
VETUS VD4.120 Full Specs
| Engine type | 4-Cylinder In-line (Hyundai Base) |
| Displacement | 3.9L (3907 cc) |
| Bore x stroke | 104 x 115 mm |
| Horsepower | 122 hp (89.7 kW) |
| Rated rpm | 2400 rpm |
| Aspiration | Turbocharged Aftercooled |
| Compression ratio | 17.6:1 |
| Fuel system | Common Rail (HPCR) |
| Recommended fuel | Diesel (EN 590) |
| Ignition/Firing Order | Compression / 1-3-4-2 |
| Alternator | 12V, 140 Amp |
| Gear ratio/Drive | Shaft Drive compatible |
| Transmission | ZF / Technodrive Hydraulic |
| Dry weight | 435 kg (959 lbs) |
| Flywheel housing | SAE 3 |
| Steering | Hydraulic / Electronic compatible |
| Coolant capacity | 16L |
| Exhaust system | Water cooled manifold |
| Cooling system | Indirect cooling (Heat exchanger) |
| Lubrication | Forced lubrication |
| Oil capacity | 12L |
| Emissions rating | EPA Tier 3 / IMO II / RCD II |
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