Volvo Penta D1-20 Inboard Marine Diesel Engine 18HP – Compact, Fuel-Efficient Power

The Volvo Penta D1-20 Inboard Marine Diesel Engine, delivering 18HP of reliable marine propulsion, is purpose-built for sailboats, small yachts, commercial vessels, and recreational crafts requiring compact, fuel-efficient, and quiet inboard power.

High Torque at Low RPM for Reliable Maneuvering

The Volvo Penta D1-20 provides high torque at low engine speeds, ensuring precise control during docking, navigating strong currents, and confined areas. This makes it ideal for both experienced sailors and commercial operators.

Quiet, Smooth Operation with Minimal Vibration

This engine features a 3-cylinder, 4-stroke configuration, rubber isolation mounts, and an air intake silencer to reduce vibration and engine noise. The result is a smooth, quiet cruising experience with superior onboard comfort.

Durable Construction and Freshwater Cooling

The rigid engine block, one-piece cylinder head, and freshwater cooling system with heat exchanger increase the engine’s lifespan and protect internal components from saltwater corrosion.

High-Output Alternator with Integrated Sensor

Equipped with a 115A alternator and charging sensor, the D1-20 allows for efficient battery charging, even at low RPMs. At cruising speed, the alternator can output up to 100A, keeping all onboard electrical systems fully powered.

Environmentally Compliant and Fuel Efficient

With a cam-driven fuel injection system, this marine diesel engine delivers impressive fuel economy while meeting stringent environmental regulations including EPA Tier 3, EU RCD Stage II, and BSO II standards.

Technical Specifications – Volvo Penta D1-20 Inboard Marine Diesel Engine

Why Choose the Volvo Penta D1-20 Inboard Engine?

• Exceptional Fuel Economy – Engineered for minimal fuel consumption during long-distance cruising or low-speed sailing.

• Compact Footprint – Ideal for vessels with limited engine room space.

• Low Emissions – Meets modern emission standards without sacrificing performance.

• Low Maintenance Design – Features such as easy-access filters and simplified servicing points reduce maintenance time and cost.

• Perfect for Repowering – A great replacement for older Volvo Penta inboard diesel engines or other compact 2–3 cylinder marine engines.

Applications for the Volvo Penta D1-20

This engine is suitable for a wide range of marine applications, including:

• Sailboats and Cruisers – Smooth, quiet operation and reliable propulsion under sail or in harbors.

• Fishing Boats – Ideal for commercial and recreational fishing vessels operating at lower speeds.

• Tenders and Small Utility Boats – Compact design fits easily into tight engine compartments.