Volvo Penta D2-50 – Inboard Diesel Engine 49 HP
Bilge spaces on coastal cruising sloops accommodate a Volvo Penta D2-50 diesel powerplant, which burns EN 590 diesel through an in-line injection pump across a 2.2L 4-cylinder block, producing 49 HP and 115 Amps charging at 549 lbs.
- 2.2L displacement balances smooth auxiliary torque
- In-line injection pump delivers consistent fuel pressure
- 115-Amp charging circuit powers house electronics
- 549-lb dry weight minimizes stern settling
$2,765.70
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During routine fluid-service planning, the Volvo Penta D2-50 uses 10.5L oil capacity and a closed fresh-water cooling system holding 9.5L coolant. The naturally aspirated 2.2L inline four-cylinder engine produces 49 hp at 3,000 rpm through an in-line injection pump. Its stated SAE 5 flywheel housing, HS25A, MS25, or S-Drive compatibility, and mechanical or hydraulic marine gear options establish the documented propulsion interfaces.
The 549-pound dry engine uses EN 590 or ASTM D975 diesel and a 115-amp alternator. A water-cooled elbow forms the specified exhaust arrangement, while pressure-feed lubrication supports the listed fluid-service configuration. The supplied specification lists EPA Tier 3, BSO II, and RCD II emissions ratings alongside mechanical or hydraulic steering compatibility.
Why Choose the Volvo Penta D2-50 Marine Diesel Engine
The D2-50 marine diesel engine combines 49 hp at 3,000 rpm with a naturally aspirated 2.2L four-cylinder configuration and in-line injection pump. Buyers comparing inboard or saildrive propulsion can assess its HS25A, MS25, or S-Drive compatibility, mechanical or hydraulic gear options, 115-amp alternator, and SAE 5 flywheel housing. The supplied 549-pound dry weight and fluid capacities provide engine-room planning data.
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 pre-purchase product guidance and order-related customer support. Review the applicable warranty information on before completing your order.
Before Ordering the Volvo Penta D2-50 Marine Diesel Engine
Before ordering, verify engine-bed dimensions, mount locations, SAE 5 flywheel-housing compatibility, selected marine gear or S-Drive, fuel supply, cooling-water intake, water-cooled elbow routing, control connections, alternator wiring, ventilation, shaft or saildrive alignment, and professional propulsion installation planning.
Product Specifications
Volvo Penta D2-50 Full Specs
| Engine type | In-line 4, 4-stroke Diesel |
|---|---|
| Displacement | 2.2L (134 cid) |
| Bore x stroke | 84 x 100 mm |
| Horsepower | 49 hp (36 kW) |
| Rated rpm | 3000 rpm |
| Aspiration | Naturally Aspirated |
| Compression ratio | 23.3:1 |
| Fuel system | In-line Injection Pump |
| Recommended fuel | Diesel (EN 590 / ASTM D975) |
| Ignition/Firing Order | Compression / 1-3-4-2 |
| Alternator | 115 Amp |
| Gear ratio/Drive | HS25A / MS25 / S-Drive |
| Transmission | Mechanical / Hydraulic Marine Gear |
| Dry weight | 249 kg (549 lbs) |
| Flywheel housing | SAE 5 |
| Steering | Mechanical / Hydraulic compatible |
| Coolant capacity | 9.5L |
| Exhaust system | Water cooled elbow |
| Cooling system | Fresh water cooled (Closed) |
| Lubrication | Pressure feed |
| Oil capacity | 10.5L |
| Emissions rating | EPA Tier 3, BSO II, RCD II |
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