| Manufacturer / Brand | Volvo Penta |
| Model Designation | D6-400A Aquamatic DPI |
| Engine Type | 4-Stroke Supercharged & Turbocharged Marine Diesel Sterndrive Package |
| Cylinder Configuration | Inline-6, 24-Valve DOHC |
| Total Displacement | 5.5 Liters (336 cu in) |
| Bore x Stroke | 103 x 110 mm (4.06 x 4.33 in) |
| Aspiration & Charge Air | Roots Mechanical Compressor (Supercharger) and Turbocharger with Charge Air Intercooler |
| Cooling System Architecture | Closed Freshwater Cooling Loop with Heavy-Duty Heat Exchanger and Raw Water Impeller |
| Continuous Power Rating (P1) | 300 BHP (221 kW) @ 3,100 RPM |
| Maximum / Intermittent Power (P3/P4) | 400 BHP (294 kW) @ 3,500 RPM (Rating 4 / Rating 5 Duty) |
| Fuel Injection Platform | High-Pressure Common Rail (HPCR) Direct Injection System (up to 2,000 bar) with EVC-2 |
| Cylinder Head Metallurgy | Single-Piece 24-Valve Cast Iron Cylinder Head with Structural Crossflow Layout |
| Cylinder Liners | Parent Bore High-Strength Cast Iron Block with Reinforced Bedplate Subframe |
| Flywheel Housing & Flywheel | Volvo Penta DPI Transom Shield Mounting Interface with Heavy-Duty Torsional Isolator |
| Electrical System & Ground | 12V 2-Pole Marine Ground System with CAN-Bus Electronic Steering and Throttle |
| Starter & Alternator Output | 12V 3.0 kW Starter / 12V 115A Marine Alternator with Dynamic Battery Sensor |
| Lube Oil Sump Capacity | 20.0 Liters (5.28 US gal) |
| Engine Coolant Capacity | 16.0 Liters (4.23 US gal) |
| Dry Weight (excl. gearbox) | 580 kg (1,279 lbs) [Complete DPI Package: 775 kg (1,709 lbs)] |
| Overall Dimensions (L x W x H) | 1,151 x 823 x 779 mm (45.3 x 32.4 x 30.7 in) |
| Emissions Certification | EPA Marine Tier 3, IMO Tier II, EU RCD Stage II |
| Fuel Compatibility | Ultra-Low Sulfur Diesel (ULSD No. 2), Marine Gas Oil (MGO DMA/DMB), B20 Blends |
| Transmission / Outdrive Compatibility | Included Volvo Penta Aquamatic DPI Sterndrive with Electro-Hydraulic Clutch, Electronic Steering, and DuoProp Propeller Set |
| Factory Warranty Period | 2-Year Limited Factory Warranty with 3-Year Major Components Coverage |
| Application Research | High-speed tactical interceptors, offshore patrol vessels, luxury sports day boats, express cruisers, and rapid search-and-rescue (SAR) craft. |
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