Volvo Penta D6-400A Aquamatic DPI Sterndrive Engine Package

Description

Featuring a 5.5-liter displacement block, the Volvo Penta D6-400A DPI Package delivers exceptional sterndrive power to offshore sport cruisers, fast patrol craft, and commercial tenders up to 50 feet. Displacing 5.5 liters across six inline cylinders, this supercharged and turbocharged diesel produces 400 horsepower at 3,500 RPM. Common-rail electronic fuel injection ensures quiet combustion, low smoke emissions, and smooth torque delivery.

High-tensile gray cast iron forms the monolithic cylinder block, equipped with induction-hardened parent cylinder walls that resist scuffing under boost. The fresh water cooling system integrates an aluminum heat exchanger housing with a cupronickel tube bundle, charge air cooler, and bronze sea water pump. Dry package weight with DPI sterndrive is 1,742 lbs, supported by a 21-quart oil pan and 0.5-inch fuel line connections.

Key Features of Volvo Penta D6-400A

Cruising skippers buy Volvo Penta D6-400A inboard engine sterndrive packages to equip modern sports cruisers requiring rapid planing acceleration and precise helm maneuverability. The matching DPI hydraulic clutch sterndrive eliminates mechanical clunking while delivering proportional thrust control in tight slips.

• 400 horsepower rating drives deep-V hulls past 40 knots with clean acceleration.
• Hydraulic clutch inside DPI sterndrive permits smooth silent gear engagement without mechanical jerk.
• Mechanical supercharger generates instant boost response before the turbocharger engages.
• Inline six-cylinder reciprocating mass minimizes engine room vibration across cruising RPM.
• Cupronickel tube heat exchanger protects cylinder jackets from marine salt scaling.
• Volvo Penta D6-400A sterndrive efficiency provides exceptional fuel economy on long cruising legs.
• Heavy-duty vibration isolators absorb engine harmonics to protect boat stringer beds.
• Electronic Vessel Control integrates steering, joystick docking, and engine diagnostics on helm screens.

Combustion Dynamics Thermal Capacities

Dual thermostats regulate internal coolant temperatures between 174°F and 188°F under continuous planing operations. The six-cylinder block develops 715 lb-ft of torque at 2,000 RPM, giving sports cruisers power to rise on plane without hesitation. Rated under M4 pleasure craft service, thermal heat rejection transfers 250 kW into raw sea water circuits. Specific fuel consumption averages 202 g/kWh, burning about 7.15 gallons per hour at standard yacht cruising speeds across open coastal waters under loaded trim.

Exhaust Integration Bay Clearances

Exhaust gases route through the sterndrive transom shield and propeller hub, meeting ABYC P-1 and USCG Title 46 marine standards. Mounting brackets align across 26-inch to 30-inch stringer centers, preserving 3.0 inches of clearance below the oil pan. Flexible elastomer mounts absorb vibration from the hull.

Service Schedules Application Constraints

Electronic steer-by-wire and CAN-bus control levers connect straight to the engine control unit for instantaneous transmission response. Operators inspect sterndrive bellows, verify fluid levels, and check belt drives prior to departure. This engine package is not engineered for offshore racing hydroplanes, surface drives, or raw water cooled bilges without fresh water heat exchangers.

• Inspect sterndrive bellows and oil level before each shift.
• Inspect and clean sterndrive sacrificial zincs every 100 hours.
• Change engine lube oil, drive gear oil, and filters every 200 hours.

Warranty Terms Package Manifest

Recreational buyers receive 2-Year limited warranty protection on base castings and sterndrive components. The shipping crate contains the engine, Aquamatic DPI sterndrive, transom shield module, digital helm display harness, manual oil extraction pump, and bound factory technical service documentation.