Volvo Penta D6-300 – Inboard Diesel Engine 300 HP

With 300 hp at 3,300 rpm, the Volvo Penta D6-300 uses a turbocharged and aftercooled 5.5L inline six-cylinder diesel configuration with common rail injection. The supplied specifications identify EN 590 or ASTM D975 diesel and a 17.5:1 compression ratio. Hydraulic marine gear, HS63AE or HS80AE drive options, SAE 4 flywheel housing, and Electronic Vessel Control define the listed propulsion-system arrangement.

The supplied dry weight is 656 kg, with a 12V 115-amp or 24V 80-amp alternator option. Heat-exchanger or keel cooling holds 16L coolant, while a water-cooled manifold forms the stated exhaust configuration. Pressure-feed wet-sump lubrication uses 20L oil capacity, and listed emissions ratings include EPA Tier 3, IMO II, and RCD II.

Why Choose the Volvo Penta D6-300 Marine Diesel Engine

The D6-300 marine diesel engine combines 300 hp at 3,300 rpm with turbocharging, aftercooling, and common rail injection in a 5.5L six-cylinder platform. Buyers can assess its Hydraulic Marine Gear, HS63AE or HS80AE drive compatibility, Electronic Vessel Control, and alternator options. The supplied cooling choices, 16L coolant capacity, and 20L oil capacity add useful engine-room planning information.

Warranty and Support

Warranty coverage should be confirmed against the current Volvo Penta warranty policy applicable to the exact engine, purchase market, installation, and operating use. can assist with product details and order-related questions before purchase. Please review current warranty eligibility and coverage details on before purchase.

Before Ordering the Volvo Penta D6-300 Marine Diesel Engine

Before ordering, verify engine-bed dimensions, structural capacity for the supplied 656 kg dry weight, SAE 4 flywheel-housing compatibility, hydraulic gear selection, HS63AE or HS80AE drive requirements, Electronic Vessel Control, alternator voltage, fuel supply, cooling-water or keel-cooling arrangement, water-cooled manifold routing, ventilation, shaft alignment, propeller matching, and professional installation planning.