Volvo Penta D1-20 – Inboard Diesel Engine 18.8 HP

Volvo Penta D1-20 18.8 HP – Compact Auxiliary Sailboat Power

Minimizing weight impact on the transom of smaller sailing vessels is the primary mechanical challenge solved by the Volvo Penta D1-20. Delivering 18.8 HP at 3200 RPM, this 3-cylinder, 0.76-liter engine provides smooth and quiet propulsion for yachts in the 22-28 foot range. For American sailors, the D1-20 offers a reliable, low-vibration auxiliary source that excels in fuel economy, making it an ideal repower choice for classic US-built pocket cruisers navigating the coastal sounds and bays of the Atlantic and Pacific.

Adhering to strict EPA Tier 3 emission standards, the D1-20 features a freshwater cooling system and a robust 115A alternator as standard, ensuring that modern house battery banks remain charged for GPS and autopilot systems. Engineered for the USA maritime market, this engine emphasizes ease of maintenance with all service points located for quick access in tight engine compartments. Its saltwater-resistant heat exchanger provides critical protection against internal corrosion in high-salinity American coastal environments, ensuring long-term mechanical integrity.

Core Technical Specifications

• Maximum Output: 18.8 HP at 3200 RPM.
• Displacement: 46 cubic inches (0.76 Liters).
• Configuration: 3-cylinder in-line, 4-stroke diesel.
• Aspiration: Natural aspiration for peak simplicity.
• Dry Weight: Approximately 320 lbs with MS10 gear.
• Electrical: 12V / 115A high-output alternator.
• Compliance: Fully certified EPA Tier 3 standards.
• Bore and Stroke: 2.64 x 2.83 inches.