Engine and Spares
(For Sale)

Wartsila 20DF Dual-Fuel Engines For Sale & Wanted – Wartsila 20DF Engine Listings

About the Wartsila 20DF Engine

The Wartsila 20DF Engine is a dual-fuel medium-speed marine engine designed to operate on both natural gas and liquid fuels. Manufactured by Wartsila, the Wartsila 20DF engine platform is widely used for marine auxiliary power generation and stationary power plants.

The 20DF engine series is part of the well-known Wartsila 20 engine family, which has been installed in hundreds of vessels and energy facilities worldwide. The DF (Dual Fuel) technology allows operators to switch between gas mode and diesel mode, providing flexibility, improved fuel efficiency, and reduced emissions.

Because of its advanced combustion technology and reliable performance, the Wartsila 20DF engine is commonly used on LNG-powered ships, offshore vessels, and industrial power generation plants.

On IndustrialMarinePower, ship owners, engine traders, and spare parts suppliers can list Wartsila 20DF engines for sale or wanted, including complete generator sets and related engine components.

Wartsila 20DF Engine Models

The Wartsila 20DF engine series is available in several cylinder configurations:

• Wartsila 4L20DF

• Wartsila 6L20DF

• Wartsila 8L20DF

• Wartsila 9L20DF

These engines are typically installed as dual-fuel generator engines providing electrical power on vessels and in land-based power plants.

Typical Specifications

Typical specifications of Wartsila 20DF engines include:

• Engine Type: Medium-Speed Dual Fuel Engine

• Fuel Type: Natural Gas / Marine Diesel Oil / Heavy Fuel Oil

• Engine Speed: typically 900 RPM

• Bore: 200 mm

• Stroke: 280 mm

Typical Power Output

Approximate output depending on configuration:

• 4L20DF: approx. 720 – 800 kW

• 6L20DF: approx. 1080 – 1200 kW

• 8L20DF: approx. 1440 – 1600 kW

• 9L20DF: approx. 1620 – 1800 kW

These engines are designed for continuous-duty power generation in marine and industrial environments.

Engine Components and Associated Systems

Wartsila 20DF engines operate together with several important systems that enable dual-fuel operation and reliable engine performance.

Common equipment and components include:

• Gas admission system

• Turbocharger units

• Fuel injection systems

• Cylinder heads

• Pistons and piston rings

• Cylinder liners

• Connecting rods

• Crankshaft assemblies

• Lubrication oil pumps

• Cooling water systems

• Engine control and automation systems

• Alternators (generator units)

• Exhaust gas systems

These components are essential for the operation and maintenance of dual-fuel engines.

Spare Parts Trading on IndustrialMarinePower

IndustrialMarinePower is a global marketplace where marine companies, equipment suppliers, and spare parts traders can buy, sell, or post wanted listings for Wartsila engines and spare parts.

Users can list:

• Wartsila 20DF engines

• Wartsila dual-fuel generator sets

• rebuilt or overhauled engines

• Wartsila engine spare parts

• surplus marine engine components

Buyers can also submit wanted listings to locate specific engines or spare parts required for maintenance and overhaul projects.

Typical Applications

Wartsila 20DF engines are commonly used in:

• LNG-powered vessels

• offshore support vessels

• marine generator sets

• industrial power plants

• distributed energy systems

• backup and standby power generation

The dual-fuel capability allows operators to reduce emissions while maintaining reliable engine performance, making the 20DF series suitable for modern marine and energy applications.

Example Listing Description

Wartsila 20DF engine for sale or wanted – Wartsila dual-fuel marine engine.

Available models may include:

• Wartsila 4L20DF

• Wartsila 6L20DF

• Wartsila 8L20DF

• Wartsila 9L20DF

Condition: New / Used / Rebuilt / Overhauled
Application: Marine generator sets, LNG-powered vessels, and industrial power plants.

Complete engines, generator packages, and spare parts such as pistons, cylinder liners, turbochargers, injectors, and DF system components can be listed on IndustrialMarinePower.

Contact the seller for price, engine hours, location, and shipping information.