Volvo Penta D4-300 – Marine Diesel Engine 300 HP

Description

Using a 3.7L inline four-cylinder configuration, the Volvo Penta D4-300 produces 300 hp at 3,500 rpm with turbocharging, supercharging, and aftercooling. Common rail injection, a 17.5:1 compression ratio, and EN 590 or ASTM D975 diesel define the supplied fuel-system specification. Hydraulic marine gear, HS68A, HS85A, or DPH drive compatibility, SAE 4 flywheel housing, and EVC controls establish the listed propulsion interfaces.

The supplied dry weight is 1,279 pounds, while heat-exchanger cooling holds 13L coolant and the water-cooled manifold forms the stated exhaust arrangement. Pressure-feed wet-sump lubrication uses 9L oil capacity. Alternator options include 12V 150 amps or 24V 80 amps, and listed emissions ratings include EPA Tier 3, IMO II, and RCD II.

Key Specifications of the Volvo Penta D4-300 Marine Diesel Engine

• The 3.7L inline four-cylinder engine produces 300 hp at 3,500 rpm through turbocharged, supercharged, and aftercooled diesel operation.
• Common rail injection supports the supplied EN 590 or ASTM D975 fuel requirement with a stated 17.5:1 compression ratio.
• HS68A, HS85A, or DPH drive options require propulsion-package confirmation alongside the listed hydraulic marine gear configuration.
• Electronic Vessel Control requires integration planning between the engine, helm controls, selected drive, and vessel electrical system.
• Alternator options include 12V 150-amp or 24V 80-amp outputs for the listed electrical-system configurations.
• Heat-exchanger cooling holds 13L coolant, while the water-cooled manifold defines the specified exhaust-system arrangement.
• Pressure-feed wet-sump lubrication uses 9L oil capacity, requiring engine-room access for scheduled fluid maintenance and inspection.

Engine Configuration and Service Access

This Volvo Penta marine diesel engine uses 103 by 110 mm bore and stroke dimensions in an inline four-cylinder, four-stroke layout. The turbocharger, supercharger, aftercooler, common rail system, heat exchanger, water-cooled manifold, hydraulic gear, and alternator should remain accessible after installation.

The supplied 1,279-pound dry weight, EVC controls, selected HS68A, HS85A, or DPH drive arrangement, cooling system, and wet-sump lubrication should be planned together. Engine-bed loading and service clearance require review before final installation.

Why Choose the Volvo Penta D4-300 Marine Diesel Engine

The D4-300 marine diesel engine combines 300 hp with turbocharging, supercharging, aftercooling, and common rail injection in a 3.7L four-cylinder platform. Buyers comparing propulsion packages can assess its hydraulic marine gear, HS68A, HS85A, or DPH compatibility, EVC controls, and dual-voltage alternator choices. The supplied 1,279-pound dry weight and 13L coolant capacity provide additional installation-planning data.

Installation and Compatibility Considerations

Confirm that the vessel supports the supplied 1,279-pound dry weight, SAE 4 flywheel housing, hydraulic marine gear, selected HS68A, HS85A, or DPH drive, and EVC electronic-control arrangement. Plan engine beds, shaft or drive alignment, fuel supply, cooling-water intake, water-cooled manifold routing, alternator voltage, ventilation, and clearance around forced-induction components.

Use fuel meeting EN 590 or ASTM D975 requirements. Confirm provisions for 13L coolant capacity, 9L oil capacity, hydraulic gear servicing, and access to the common rail system, turbocharger, supercharger, aftercooler, cooling system, exhaust manifold, and electrical components.

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. Mulmarine.com can assist with product details and order-related questions before purchase. Please review current warranty eligibility and coverage details on Mulmarine.com before purchase.

Before Ordering the Volvo Penta D4-300 Marine Diesel Engine

Before ordering, verify engine-bed dimensions, structural capacity for the supplied 1,279-pound dry weight, SAE 4 flywheel-housing compatibility, hydraulic marine gear, selected HS68A, HS85A, or DPH drive, EVC controls, alternator voltage, fuel supply, cooling-water intake, exhaust routing, ventilation, shaft or drive alignment, and professional installation planning.