Engine and Spares
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Caterpillar MaK M34 DF Engine For Sale & Wanted – Listings

About the Caterpillar MaK M34 DF Engine

The Caterpillar MaK M34 DF Engine is a modern dual-fuel medium-speed marine engine developed by Caterpillar Inc. under the MaK brand. The engine is designed to operate on natural gas (LNG) as well as marine diesel fuel, making it suitable for vessels that must meet strict environmental regulations and emission standards.

The M34 DF engine is widely used in LNG-powered ships, offshore vessels, and modern commercial fleets that require flexible fuel options and efficient power generation. The engine platform provides reliable propulsion and generator power while reducing emissions compared to conventional diesel engines.

On IndustrialMarinePower, buyers and sellers can list new, used, rebuilt, or wanted Caterpillar MaK M34 DF engines used in marine propulsion and ship generator systems worldwide.

M34 DF Configuration Models

MaK marine engines are usually identified by their cylinder configuration models.

Common configurations include:

• 6 M34 DF

• 8 M34 DF

• 9 M34 DF

These configurations are commonly installed in:

• LNG-powered vessels

• offshore support vessels

• commercial cargo ships

• marine generator plants

• environmentally compliant marine propulsion systems

Caterpillar MaK M34 DF Engine Specifications

Typical specifications of the CAT MaK M34 DF engine include:

• Engine Model: CAT MaK M34 DF

• Engine Type: Medium-Speed Dual-Fuel Marine Engine

• Cylinder Configurations: 6 / 8 / 9 cylinders

• Power Output: approx. 3,000 – 4,500 kW depending on configuration

• Engine Speed: approx. 720–750 rpm

• Fuel Type: Natural Gas (LNG) or Marine Diesel Oil

• Applications: Marine propulsion and marine generator systems

The M34 DF engine is designed to deliver high efficiency, reduced emissions, and reliable marine operation, making it a popular engine choice for modern LNG-powered vessels.

Common Applications

The Caterpillar MaK M34 DF engine is commonly used in:

• LNG-powered ships

• offshore support vessels

• container ships

• marine generator systems

• environmentally compliant commercial vessels

Because of its dual-fuel capability, the engine allows operators to switch between gas and diesel fuel, improving operational flexibility and compliance with international maritime emission standards.

Buy, Sell or Post Wanted Caterpillar MaK M34 DF Engines

IndustrialMarinePower is a global marketplace where marine equipment suppliers, ship owners, and engine dealers can buy, sell, or post wanted listings for Caterpillar MaK engines.

Listings may include:

• New marine engines

• Used marine engines

• Rebuilt CAT MaK engines

• Surplus marine propulsion systems

Buyers can contact sellers directly for price, running hours, location, and shipping details.

Example Listing Description

Caterpillar MaK M34 DF engine for sale or wanted – CAT MaK M34 DF dual-fuel marine engine.

Available configurations may include:
6 M34 DF, 8 M34 DF, 9 M34 DF

Condition: New / Used / Rebuilt
Application: LNG vessels, offshore ships, marine propulsion systems, and generator plants.

Contact the seller for price, running hours, location, and delivery details.