Volvo Penta D4-320 Inboard Diesel Engine
Volvo Penta D4-320 Specs
| Brand | Volvo Penta |
| Full Model Code / Configuration | D4-320I-G (In-line 4-cylinder diesel engine) |
| Country of Origin | Sweden |
| Engine Series / Family | D4 Series (Latest Generation) |
| Engine Type / Cylinder Block | Inline-4, 4-Stroke |
| Displacement | 3.70 Liters / 3,700 cc |
| Rated Horsepower | 320 HP (235 kW) @ 3600 RPM |
| Maximum Torque | 700 Nm @ 2000–2800 RPM |
| Rated Engine Speed / Redline RPM | 3600 RPM |
| Aspiration & Induction | Turbocharged, Charge Air Cooler (Aftercooled) |
| Fuel System / Injection | Common Rail System (Direct Injection, Piezo Injectors, 2000 bar) |
| Bore x Stroke | 103 mm x 110 mm |
| Compression Ratio | 16.0:1 |
| Electrical System Voltage | 12V (Standard) / 24V (Optional) |
| Alternator Output | 150 Amps (12V) |
| Cooling System Type | Fresh Water Heat Exchanger / Keel Cooling option (Closed-loop system) |
| Coolant Capacity | 13.0 Liters |
| Exhaust System / Configuration | Wet Exhaust (Water-cooled stainless steel exhaust riser) |
| Emission Compliance | US EPA Tier 3, EU RCD 2, IMO NOx Tier II |
| Lubrication System Capacity | 12.5 Liters (Total system capacity) |
| Recommended Oil Grade | VDS-4.5, SAE 15W-40 / 10W-30 (API CK-4) |
| Fuel Type / Requirement | Ultra-Low Sulfur Diesel (ULSD, EN 590 / ASTM D975 No. 2-D) |
| Fuel Consumption at Cruising Speed | 36.5 Liters/hour @ 2800 RPM (At standard planing cruise load) |
| Compatible Marine Gear / Transmission | HS63A, HS63IV (V-Drive), ZF68IV |
| Available Gear Ratios | 1.56:1, 2.04:1, 2.47:1 (HS63A) |
| Drive Type Compatibility | Shaft Drive / V-Drive |
| Dry Weight - Engine Only | 493 kg |
| Dry Weight - with Transmission | 569 kg (with HS63A) / 610 kg (with ZF68IV) |
| Dimensions - L x W x H | 913 mm x 804 mm x 799 mm (Engine only dimensions) |
| Governor / Engine Control Unit | Electronic Vessel Control (EVC-E2 / EMS 2.4 ECU) |
| Control System Interface | Volvo Penta EVC System (NMEA 2000, J1939 CAN-bus integrated instrumentation) |
| Starting System | Electric starter motor 3.5 kW (12V) |
| Flywheel & Housing Size | SAE No. 4 |
| Standard Warranty | 2 Years / 1000 Hours (Commercial) or 5 Years (Recreational Limited Warranty) |
| Application | Fast sport cruisers (30–38 feet), flybridge yachts, sportfishing vessels, and rapid response light commercial boats. |
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