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Volvo Penta D6-480 – Inboard Diesel Engine 480 HP
Volvo Penta D6-480 – 480 HP is an efficient 4-cycle marine engine representing the pinnacle of the D6 series, delivering a massive 480 HP from a 5.5L block. This model utilizes the latest high-pressure injection system and performance-tuned turbocharging, providing elite thrust for heavy planing hulls and multi-engine yacht configurations while maintaining Tier 3 emission compliance.
- Transom/Engine Integration Specification: Rated at 480 HP (353 kW) at 3700 RPM.
- Core Engine Mechanical Design: Inline 6-Cylinder 5.5L Turbo-Aftercooled.
- High Precision Fuel Induction: Electronic Common Rail with EVC-2.
- Optimal Marine Vessel Compatibility: Perfect for flagship motor yachts and sport cruisers.
- Long Term Warranty Coverage: Volvo Penta 2+3 year limited warranty coverage.
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Description
Volvo Penta D6-480 480 HP – Precision Performance Marine Diesel
Overcoming the lag associated with high-horsepower diesel engines, the Volvo Penta D6-480 delivers 480 HP at 3700 RPM through a sophisticated supercharger and turbocharger combination. This dual-charging system provides the instantaneous low-end punch needed for fast-planing American sportfishers and express cruisers. The 5.5-liter, 6-cylinder architecture is built with a cast-iron block and ladder frame to ensure mechanical longevity under the high-stress conditions often encountered during offshore fishing tournaments in US coastal waters.
Adhering to strict USA EPA Tier 3 emission mandates, the D6-480 utilizes common-rail technology and an advanced ECU to ensure a clean-burning transom and optimized fuel economy. For the American operator, the integrated EVC system allows for advanced features like Dynamic Positioning and autopilot integration, simplifying complex maneuvers in crowded USA marinas. Its robust freshwater cooling system is engineered to prevent corrosion in high-salinity environments, ensuring consistent performance in the Atlantic, Pacific, and Gulf coasts.
Core Technical Specifications
- Maximum Output: 480 HP at 3700 RPM.
- Displacement: 336 cubic inches (5.5 Liters).
- Configuration: 6-cylinder in-line, 4-stroke diesel.
- Aspiration: Supercharged and Turbocharged with aftercooler.
- Dry Weight: Approximately 1300 lbs (engine only).
- Alternator: 12V / 115A standard output.
- Fuel System: Common-rail direct injection.
- Compliance: EPA Tier 3 and USCG compliant.
Volvo Penta D6-480 Full Specs
| Engine type | In-line 6, 4-stroke Diesel |
| Displacement | 5.5L (336 cid) |
| Bore x stroke | 103 x 110 mm |
| Horsepower | 480 hp (353 kW) |
| Rated rpm | 3700 rpm |
| Aspiration | Turbo, Supercharger, Aftercooler |
| Compression ratio | 17.5:1 |
| Fuel system | Common Rail Injection |
| Recommended fuel | Diesel (EN 590) |
| Ignition/Firing Order | Compression / 1-5-3-6-2-4 |
| Alternator | 12V/150A |
| Gear ratio/Drive | HS85A / Shaft |
| Transmission | Hydraulic |
| Dry weight | 625 kg |
| Flywheel housing | SAE 4 |
| Steering | EVC Electronic |
| Coolant capacity | 16L |
| Exhaust system | Water cooled riser |
| Cooling system | Heat Exchanger |
| Lubrication | Pressure feed |
| Oil capacity | 20L |
| Emissions rating | EPA Tier 3, IMO II |
Volvo Penta D6-480 Service & Performance Guide
What is the fuel consumption of the Volvo Penta D6-480?
The D6-480 consumes approximately 24.1 gallons per hour at its maximum 3,700 RPM. This 5.5-liter inline-six uses common-rail technology and a supercharger/turbocharger combination for immediate response. Optimal cruising is found between 2,800 and 3,000 RPM, balancing high speed with sustainable fuel consumption for planing hulls.
What oil grade is required for the Volvo Penta D6-480?
This model requires 21.1 quarts of VDS-4.5 or SAE 15W-40 oil meeting API CK-4 specifications. The large oil volume helps manage the high thermal loads produced by the supercharger during acceleration. Replace the oil and the full-flow and bypass filters every 200 hours to maintain turbocharger and supercharger integrity.
How does the Volvo Penta D6-480 cooling system operate?
It features a dual-circuit cooling system with a high-capacity freshwater loop and a seawater-cooled aftercooler. The system is designed to provide uniform cooling to the cylinder head and block, preventing hot spots during full-throttle operation. Monitor the seawater pump impeller and flush the heat exchanger annually to ensure peak cooling capacity.
What are the electrical system specifications for this engine?
The D6-480 includes a 12V-115A alternator, providing plenty of power for the Electronic Vessel Control system and modern navigation suites. This robust charging capacity ensures steady voltage for electronic shift and throttle actuators. Maintain the battery at a minimum 12.6V to ensure the ECU functions without fault codes.
What are the physical dimensions and weight of the D6-480?
The dry weight is 1,301 lbs, measuring 47.2 inches in length and 38.2 inches in height. Its slim profile is ideal for twin-engine installations in motor yachts with limited engine room beam. Ensure the engine mounts are adjusted annually to maintain proper shaft alignment and minimize cabin vibration.
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