Mercedes W212 E200 CDI Bare Engine 651.925 651925 136HP 99k 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 W212 E200 CDI Bare Engine 651.925 651925 136HP 99k miles, WARRANTY is a used, complete block with cylinder head designed for installation in diesel units of this series. This is a solution for users who want to restore the efficiency of the drivetrain while maintaining factory performance characteristics and consistency with the original Mercedes design. The bare engine serves as a solid base for further assembly of accessories according to individual service needs.

Specifications and technical data

• SKU: A6510102543
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6510102543
• Substitutable numbers: A6510102543, A 651 010 25 43
• Fuel type: Diesel
• Number of cylinders: 4
• Part type: Engine Long Block
• Category: Engines
• Engine code: 651.925
• Mileage: 99 000

Technical characteristics of the engine

The presented engine belongs to the Engines category and is designed to run on diesel fuel, which ensures the flexibility and economy of operation typical for this design. The four-cylinder layout promotes balanced operation while maintaining a favorable power-to-weight ratio. The engine code assigned to this unit facilitates unambiguous identification when selecting accessories, the ECU, and auxiliary components during repairs or swaps.

The engine comes from a vehicle with a specific mileage, which allows for a realistic assessment of its wear and tear and planning of further service work. This type of engine is particularly useful in cases of serious damage to the existing unit, such as seizing or block cracks, when regenerating the old engine is no longer cost-effective.

Application in Mercedes W212 E200 CDI

The Mercedes W212 E200 CDI uses a modern diesel design where the compatibility of the engine code and block architecture is crucial. The bare engine allows for the transfer of existing accessories (turbo, injectors, pumps, manifolds, wiring harnesses) from the previous unit, maintaining the vehicle's factory configuration. This helps reduce repair costs while maintaining the original performance parameters of the drivetrain.

Such a solution is particularly beneficial for workshops specializing in the Mercedes brand, where assembly repeatability, predictability of the final result, and the ability to use existing components are valued. The bare engine then provides a stable base for further assembly without the need to interfere with the vehicle's factory installation.

Benefits of choosing a used bare engine

A used engine with a preserved block and head structure is a reasonable compromise between cost and functionality. It allows you to:

• restore the efficiency of the power unit without purchasing a complete, fully equipped engine,
• retain the original accessories already matched to a specific car,
• better control the repair budget in case of serious damage to the old engine,
• maintain consistency with the manufacturer's factory technical solutions.

For many users and service centers, this is a practical way to restore full vehicle mobility while maintaining high quality and predictability of the drivetrain's operation.

Selection, diagnostics, and operation

Before installation, standard workshop procedures are recommended: verification of the condition of seals, inspection of cylinder bores, compression measurement, and assessment of any signs of previous repairs. This allows for proper planning of additional work and avoids unforeseen downtime. Correct selection of the engine based on the engine code and fuel type is crucial for seamless cooperation with the existing ECU and vehicle installation.

During operation, it is worth using oils and filters in accordance with the manufacturer's recommendations and maintaining regular service intervals. For diesel units, fuel quality and care for the injection system are particularly important, which directly translates into the durability of the entire engine.

Mercedes engines – expansion and additional information

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, heads, or complete power units, check the available parts in the Mercedes Engines category.

To compare the characteristics of different power units and better understand typical operational problems, it is worth reading the guide material regarding another popular brand – the article Troublesome BMW E90 engines: check what can ruin your budget! will be helpful, as it shows how proper engine selection and service affect the total cost of car ownership.