Volvo Penta D4-320 – Inboard Diesel Engine 320 HP

Description

With 320 hp at 3,600 rpm, the Volvo Penta D4-320 uses a 3.7L inline four-cylinder diesel configuration 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 arrangement. Hydraulic or sterndrive transmission, HS85A or DPI drive compatibility, and Electronic Vessel Control establish the listed propulsion interfaces.

The 1,279-pound dry engine uses an SAE 4 flywheel housing, 12V 150-amp or 24V 80-amp alternator options, and heat-exchanger cooling with 13L coolant capacity. A water-cooled manifold forms the stated exhaust configuration, while pressure-feed wet-sump lubrication holds 9L oil. Listed EPA Tier 3, IMO II, and RCD II ratings provide supplied emissions context.

Key Specifications of the Volvo Penta D4-320 Marine Diesel Engine

• The 3.7L inline four-cylinder engine produces 320 hp at 3,600 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.
• HS85A or DPI drive compatibility requires propulsion-package confirmation alongside the listed hydraulic or sterndrive transmission arrangement.
• Electronic Vessel Control requires integration planning between the engine, helm controls, connected 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, and alternator should remain accessible after installation.

The supplied 1,279-pound dry weight, EVC controls, selected HS85A or DPI drive, cooling system, and wet-sump lubrication should be evaluated as one propulsion package. Engine-bed loading, control routing, and service clearance require review before installation.

Why Choose the Volvo Penta D4-320 Marine Diesel Engine

The D4-320 marine diesel engine combines 320 hp with turbocharging, supercharging, aftercooling, and common rail injection in a 3.7L four-cylinder configuration. Buyers comparing electronic-control propulsion packages can assess its HS85A or DPI drive compatibility, EVC integration, dual-voltage alternator options, and SAE 4 flywheel housing. The supplied 13L coolant capacity and 9L oil capacity support engine-room planning.

Installation and Compatibility Considerations

Confirm the vessel supports the supplied 1,279-pound dry weight, SAE 4 flywheel housing, hydraulic or sterndrive transmission, selected HS85A or DPI drive, and EVC electronic-control configuration. Plan engine beds, shaft or drive installation, fuel supply, cooling-water intake, water-cooled manifold routing, alternator voltage, ventilation, and service clearance around forced-induction components.

Use fuel meeting EN 590 or ASTM D975 requirements. Confirm provisions for 13L coolant capacity, 9L oil capacity, EVC connections, hydraulic or drive 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 provides product-information support before purchase and assistance with order-related questions. Review warranty eligibility and current coverage details on Mulmarine.com before placing your order.

Before Ordering the Volvo Penta D4-320 Marine Diesel Engine

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