Volvo Penta D4-320 – Inboard Diesel Engine 320 HP
High-speed planing hulls launch aggressively with this Volvo Penta D4-320 marine powerplant, which forces supercharged and turbocharged boost into a 3.7L 4-cylinder engine, driving DPI sterndrives or HS85A gears with 150 Amps charging at 1279 lbs.
- 3.7L displacement produces 320 horsepower
- Combined supercharger and turbocharger eliminate lag
- 150-Amp alternator supports heavy electronics
- DPI sterndrive enables smooth hydraulic shifting
- EVC-E network integrates digital vessel controls
$11,580.80
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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.
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.
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. provides product-information support before purchase and assistance with order-related questions. Review warranty eligibility and current coverage details on 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.
Product Specifications
Volvo Penta D4-320 Full Specs
| Engine type | In-line 4, 4-stroke Diesel |
|---|---|
| Displacement | 3.7L (224 cid) |
| Bore x stroke | 103 x 110 mm |
| Horsepower | 320 hp (235 kW) |
| Rated rpm | 3600 rpm |
| Aspiration | Turbo, Supercharger, Aftercooler |
| Compression ratio | 17.5:1 |
| Fuel system | Common Rail Fuel Injection |
| Recommended fuel | Diesel (EN 590 / ASTM D975) |
| Ignition/Firing Order | Compression / 1-3-4-2 |
| Alternator | 12V/150A or 24V/80A |
| Gear ratio/Drive | HS85A / DPI Drive |
| Transmission | Hydraulic / Sterndrive |
| Dry weight | 580 kg (1279 lbs) |
| Flywheel housing | SAE 4 |
| Steering | Electronic Vessel Control (EVC) |
| Coolant capacity | 13L |
| Exhaust system | Water cooled manifold |
| Cooling system | Heat Exchanger Cooling |
| Lubrication | Pressure feed (Wet Sump) |
| Oil capacity | 9L |
| Emissions rating | EPA Tier 3, IMO II, RCD II |
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