Engine 646963 Mercedes W203 CL203 C 200 CDI Bare Engine OM646 646.963 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.).

Engine 646963 Mercedes W203 CL203 C 200 CDI Bare Engine OM646 646.963 WARRANTY is a used power unit from the Mercedes diesel engine family, designed for the W203 and CL203 generation C-Class models. This is a solution for users looking for a proven, factory-spec diesel engine with stable operating characteristics and optimized fuel consumption. By maintaining the original design, the engine ensures proper dynamics and correct compatibility with the vehicle's factory electronics.

Specifications and technical data

• SKU: A6460109244
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6460109244
• Substitutable numbers: A6460109244, A 646 010 92 44, A6460101346, A 646 010 13 46
• Fuel type: Diesel
• Number of cylinders: 4
• Category: Engines
• Mileage: 53 000

Technical characteristics of the power unit

The presented engine belongs to the Engines category and is designed for diesel fuel. The four-cylinder configuration provides a balanced compromise between refinement and operating economy, which is particularly important in the daily use of a mid-size car. The unit has been designed for long-term operation in typical road conditions, with an emphasis on the durability of the crankshaft-piston system and stable operating parameters across the full load range.

The engine comes from a Mercedes vehicle, which means it maintains factory manufacturing standards and compatibility with original auxiliary components. The cylinder layout and block design are adapted to the standard mounting points in the W203/CL203 chassis, which facilitates installation in place of the factory unit without the need for structural modifications.

Purpose and application in the Mercedes W203 / CL203

The 200 CDI engine is used in C-Class models where the priority is a combination of moderate fuel consumption and sufficient flexibility in the low and mid-RPM ranges. The unit works well with both manual and automatic transmissions, maintaining predictable torque characteristics. As a result, it is suitable for cars used daily, in city traffic, and on routes with varying loads.

The engine mileage is an important parameter when assessing the potential for further operation – in this case, the value remains at a level typical for used units, which can still serve as a solid base for further service in the vehicle, provided that proper maintenance is performed after installation.

Benefits of choosing a used Mercedes diesel engine

Choosing a used diesel engine for a Mercedes C-Class allows you to reduce repair costs compared to purchasing a brand-new unit, while maintaining the vehicle's original specifications. The four-cylinder diesel-powered unit ensures predictable fuel consumption and operating characteristics familiar to 200 CDI model users, which facilitates adaptation after replacement.

An additional advantage is the ability to utilize existing service infrastructure – workshops specializing in the Mercedes brand are well-acquainted with this design, which facilitates installation, diagnostics, and any necessary adjustments after installation. A used engine can also be a cost-effective solution in the case of post-accident repairs or mechanical failures, when the priority is to quickly restore the vehicle to working order.

Selection and compatibility verification

To correctly select this unit for a specific vehicle, it is worth paying attention to the engine version designation and compatibility with the control system used in a given W203 or CL203 model year. Comparing data from the vehicle documentation and consulting with a mechanic or technical advisor is helpful, as it minimizes the risk of incompatibility regarding auxiliary equipment, wiring harnesses, or mounting elements.

The engine has assigned part numbers and interchangeable numbers, which facilitates identification in the manufacturer's catalogs and parts selection systems. In practice, this allows for precise matching of the unit to a specific vehicle configuration without the need to interfere with factory design solutions.

Expanding the scope of work in the engine area

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 out the available parts in the Mercedes Engines category.

When planning a larger scope of work, it is also worth paying attention to the condition of the auxiliary equipment, cooling system, and lubrication system to ensure the most stable operating conditions possible after engine installation. It is good practice to replace consumables and check cooperating components, which reduces the risk of secondary failures.

Technical support and additional information

The decision to replace a power unit often involves an analysis of costs and potential risks. For a comparison of manufacturers' approaches to engine design and potential operational problems, material describing typical failures in other popular models may be helpful. In this context, it is worth reading the article BMW E90 engine failures: check what can ruin your budget!, which shows which technical aspects to pay attention to when choosing a power unit from the secondary market.

Such a comparison helps to better assess the importance of correct engine selection, installation quality, and subsequent service maintenance, which translates into the real costs of operating the vehicle after repair.