Mercedes R172 SLK 250 CDI Bare Engine 651980 651.980 204HP 45k, WARRANTY

Warranty and technical condition of the part

The engine is sold with a 90-day warranty.

The power unit was tested before removal and is in full working order.

Listing details

The offer applies to a bare engine.

The engine is sold without accessories (e.g. alternator, starter motor, manifolds, injectors, turbocharger, etc.).

Mercedes R172 SLK 250 CDI Bare Engine 651980 651.980 204HP 45k, WARRANTY is a proposal for users looking for a factory-spec, well-preserved diesel engine block for their roadster. The offered item belongs to the Engines category and serves as a solid base for professional repair or replacement of the power unit in the Mercedes SLK R172 250 CDI model. By maintaining the original design, the engine ensures proper operating parameters and compatibility with the vehicle's factory systems.

Specifications and technical data

• SKU: A6510101511
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510101511
• Substitutable numbers: A6510101511, A 651 010 15 11, A6510109911, A 651 010 99 11, A6510100603, A 651 010 06 03
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Engine code: 651980
• Mileage: 45 000

Technical characteristics of the engine block

The presented engine block belongs to the family of modern Mercedes diesel units, designed to combine dynamic performance with reasonable fuel consumption. The four-cylinder construction promotes a compact design while allowing for power output suitable for the lightweight, sporty body of the SLK.

The engine runs on Diesel fuel, which translates into high torque available in the low and medium RPM range. This characteristic is particularly beneficial in daily use and during the dynamic acceleration typical of roadster-class cars. The applied engine code allows for unambiguous identification of the unit and matching it to a specific vehicle configuration.

Bare engine block – scope and application

The offered item is a bare engine block, which means it serves as a foundation for further assembly of accessories according to the requirements of a specific car. This form is beneficial for workshops and users who plan to transfer existing accessories from their previous unit or wish to select components individually.

The engine from this series is used in the Mercedes R172 SLK 250 CDI, where it is responsible for combining driving comfort with a clearly perceptible power reserve. Thanks to its modern diesel design, the unit works well with both automatic and manual transmissions, ensuring smooth torque delivery and stable operation under a wide range of loads.

Benefits of using a used engine block

Choosing a used engine block from this series is a solution that allows for significant cost savings compared to purchasing a brand-new unit, while maintaining the original technical specifications. Particularly important is the low, documented mileage, which translates into less wear on internal components and potentially longer service life after installation.

The four-cylinder diesel engine is structurally optimized for durability, and with proper maintenance, it can work seamlessly with the fuel injection system, turbocharger, and cooling system for a long time. For workshops specializing in the Mercedes brand, such a block is a good base for professional regeneration or unit replacement in a customer's vehicle.

Application in service practice

The engine from this series works well both in post-accident repairs and when replacing units after major mechanical failures. Thanks to the preservation of the original block and cylinder head architecture, it is possible to use existing accessories, which simplifies the assembly process and reduces vehicle downtime. For users who value consistency with the factory vehicle configuration, this is a technically safe and predictable solution.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as blocks, cylinder heads, or complete power units, check the available parts in the Mercedes Engines category.

Technical support and unit selection

When choosing a used engine, it is worth paying attention to the specifics of a given series of power units and typical operational problems in modern diesels. For comparison with other brands and diesel constructions, you can use guide materials, such as an article about failing units in popular models, e.g., a guide to problematic BMW E90 engines, which shows how important informed selection of a used powertrain is.

If you are interested in a broader context of diesel unit operation in all-wheel-drive cars and the impact of the drivetrain on engine load, a comparative material regarding AWD systems may also be helpful, available in the article xDrive, 4Matic, quattro or 4Motion – a comparison of AWD systems. This will make it easier for you to assess how to choose an engine block for a specific application and driving style.