Volvo Penta MD3B Marine Diesel Engine – 35.9 HP, 3-Cylinder, Freshwater-Cooled
Introducing the Volvo Penta MD3B, a highly dependable 35.9 HP marine diesel engine, designed for smooth performance, durability, and efficiency. This 3-cylinder in-line engine is naturally aspirated, featuring direct injection and freshwater cooling via heat exchanger—ideal for a wide range of marine applications.
Built with Volvo Penta’s renowned engineering standards, the MD3B delivers consistent power at 3200 RPM, making it a popular choice for both sailboats and powerboats requiring reliability in demanding marine environments.
Engine Overview:
Model: Volvo Penta MD3B
Brand: Volvo Penta
Power Output: 35.9 HP @ 3200 RPM
Engine Type: Diesel Marine Engine
Engine Configuration: 3-Cylinder In-line
Aspiration: Naturally Aspirated
Fuel System: Direct Injection
Cooling System: Freshwater cooling via heat exchanger
Engine Specifications:
Displacement: 1.58 liters (1580 cc)
Bore x Stroke: 84 mm x 90 mm
Compression Ratio: 23:1
Idle Speed: 800 RPM
Fuel Consumption at Full Load: Approx. 9 liters/hour
Fuel Type: Diesel
Emission Compliance: Meets relevant international marine emission regulations
Electrical System:
Alternator: 12V / 60A
Starter Motor Power: 2kW
Battery Capacity Recommended: 65–70 Ah
Lubrication System:
Oil Capacity: Approx. 4.5 liters
Recommended Oil Type: API CF, SAE 15W-40
Dimensions & Weight:
Length: 939 mm
Width: 623 mm
Height: 699 mm
Dry Weight: 235 kg (~518 lbs)
Additional Features:
Engine Block: Heavy-duty cast iron for long-term durability
Mounting: Flexible engine mounts for reduced vibration
Control System: Mechanical control for throttle and gear
Gearbox Options: Compatible with various marine transmissions
Service Access: Designed for easy access to routine maintenance points
Safety Systems:
Overheat Alarm (Standard)
Low Oil Pressure Alarm (Standard)
Important Notes:
Engine is sold as shown in the photos – please review all images carefully
This is a used engine; condition is based on prior use
No installation accessories or manuals included unless pictured
No warranty offered – engine is sold as-is
Returns only accepted if DOA (Dead on Arrival) – must be reported within 7 days of receipt
Why Buy This Engine?
With robust engineering, excellent fuel efficiency, and low emissions, the Volvo Penta MD3B offers long-term value for boat owners seeking a reliable and efficient powerplant. Whether you’re repowering a sailboat or a small workboat, this engine delivers on performance and peace of mind.