Mercedes W204 C207 W212 Bare Engine 271820 M271 271.820 55k miles, 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 W204 C207 W212 Bare Engine 271820 M271 271.820 55k miles, WARRANTY is a used, complete block with cylinder head, sold without accessories, designed for professional engine repairs in premium vehicles. This bare four-cylinder petrol engine block allows for a precise powertrain rebuild using existing accessories, while maintaining factory performance characteristics. It is an ideal solution for workshops and owners looking to restore engine efficiency in a controlled manner without investing in a full assembly.

Specifications and technical data

• SKU: A2710108346
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2710108346
• Substitutable numbers: A2710108346, A 271 010 83 46, A2710103797, A 271 010 37 97
• Fuel type: Petrol
• Number of cylinders: 4
• Category: Engines
• Engine code: 271820
• Mileage: 55 000

Technical characteristics of the M271 engine block

The presented bare engine block belongs to the Mercedes M271 family of petrol units, widely used in mid-range models. The four-cylinder design ensures balanced operation, good refinement, and predictable behavior under load. The unit is designed for petrol fuel, which facilitates integration with the standard fuel system and engine management in Mercedes W204, C207, and W212 vehicles.

The bare block includes the essential mechanical parts of the engine – the block, cylinder assembly, and cylinder head – and serves as a solid base for transferring accessories from the original unit. This allows for the retention of the original equipment configuration while replacing the key component responsible for compression and combustion chamber integrity.

Application in Mercedes W204, C207, W212 models

Mercedes W204 C207 W212 Bare Engine 271820 M271 271.820 55k miles, WARRANTY has been designed for use in popular C-Class, E-Class, and coupe models. Such compatibility allows the block to be used both in post-accident repairs and when replacing units after mechanical failure. For workshops specializing in the Mercedes brand, this is a practical base for rebuilding the powertrain while maintaining factory parameters.

The four-cylinder petrol unit fits well with the requirements of users expecting reasonable fuel consumption while maintaining adequate dynamics. Using a bare block allows for the transfer of accessories, wiring harnesses, and controllers from the existing engine, which reduces the need for additional electronic adaptation or auxiliary system modifications.

Condition, mileage, and operational potential

The engine comes from dismantling and is offered as a used part, allowing for economical vehicle repair while maintaining an appropriate level of quality. The declared mileage of the unit is relatively low for this generation of engines, which translates into favorable potential for further operation after proper installation and servicing. For workshops, this means the ability to offer the customer a solution with a good balance between cost and expected durability.

Before installation, standard preparatory steps are recommended, such as checking for leaks, verifying the condition of seals, and replacing consumables if necessary. This approach allows for fully utilizing the advantages of a used block and minimizing the risk of unplanned vehicle downtime after repair.

Benefits of using a bare engine block

Choosing a bare block from the Mercedes Engines family is a particularly beneficial solution in situations where the essential mechanical part of the unit has been damaged, but the accessories remain in a condition suitable for further use. This allows you to:

• reduce repair costs compared to purchasing a complete engine,
• retain the original accessories and vehicle equipment configuration,
• precisely match the component to a specific engine code,
• maintain consistency with factory controls and the fuel system.

For the user, this means the ability to restore vehicle performance while maintaining the driving characteristics known from the original unit, and for the workshop – flexibility in selecting the scope of work and additional parts.

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

Expert support and selecting the right unit

When selecting a used engine block, it is crucial to match it to the specific vehicle version and take an informed approach to the typical operational issues of petrol units. It is worth using reliable sources of knowledge regarding the failure rates and specifics of individual designs. A good point of reference can be an analysis of experiences with other premium brands – for example, in an article dedicated to problematic power units in the E90 series, you will find practical tips on how to assess risks and repair costs, which can also be applied to planning service for a Mercedes: BMW E90 problematic engines: check what can ruin your budget!.

Such an approach allows for better planning of the scope of work, anticipating potential trouble spots, and consciously deciding whether it is more beneficial to replace the entire unit or to install a used bare block from the M271 family.