Mercedes-Benz W212 W221 Automatic Gearbox 722903 722.903 A2122707603 WARRANTY

Listing details

The gearboxes are sold with a 90-day warranty! They were tested before removal and are in full working order.

Mercedes-Benz W212 W221 Automatic Gearbox 722903 722.903 A2122707603 WARRANTY is an original, used automatic transmission from the Automatic gearboxes category, designed for high-end Mercedes models. It serves as a solid foundation for professional drivetrain repair, ensuring factory-fit and predictable powertrain performance.

Specifications and technical data

• SKU: A2122707603
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122707603
• Substitutable numbers: A2122707603, A 212 270 76 03, A2212706504, A 221 270 65 04, A0002701852, A 000 270 18 52, A2122704302, A 212 270 43 02
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical characteristics and intended use

The presented gearbox belongs to the Automatic gearboxes group used in E-Class and S-Class Mercedes vehicles of the W212 and W221 generations. The design was developed for smooth gear shifting, high operating refinement, and proper torque transfer in premium-class cars. Automatic transmission control allows for comfortable driving in city traffic and on the highway, as well as stable vehicle behavior under higher loads.

As an original Mercedes component, the gearbox is designed to work with the vehicle's factory electronics, including control modules, safety systems, and driver assistance systems. Thanks to this, after proper installation, it is possible to maintain the consistency of the entire drivetrain without the need for compromise solutions.

Automatic operation and drivetrain integration

The applied gearbox type: automatic ensures sequential, automatic gear selection depending on load, speed, and driving mode. The transmission works with the engine control system, which allows for fuel consumption optimization and the reduction of adverse mechanical stresses. The operating characteristics of this unit are adapted to a comfortable yet dynamic driving style, typical for E-Class and S-Class models.

This type of automatic gearbox is adapted to work with factory traction control and electronic stability programs, which is important for safety and predictable vehicle behavior in various road conditions. Proper gear configuration influences smooth acceleration, downshifting, and stable maintenance of cruising speeds.

Original origin and interchangeable numbers

The offered gearbox is an original part, assigned to a specific OEM part number and possessing dedicated interchangeable numbers, which facilitates the selection of the correct variant for a given vehicle. This allows for precise matching of the transmission to the factory configuration, without the need for installation modifications or adaptation of mounting elements.

The presence of the OEM part number and related reference numbers allows workshops and users to verify compatibility with a specific engine and vehicle year. This is especially important in the case of models where different variants of automatic gearboxes were used during production, differing in, among other things, controller software or design details.

Practical advantages of using a used automatic gearbox

Choosing a used automatic gearbox for a Mercedes W212 or W221 is often an economically advantageous solution compared to a full overhaul or purchasing a brand-new component. The original transmission from dismantling retains factory specifications, which is particularly important in premium cars where compliance with manufacturer documentation and predictable drivetrain behavior are paramount.

In practice, installing such a unit allows for:

• maintaining the consistency of the drivetrain with other Mercedes components,
• reducing service costs while maintaining the original design,
• preserving the gear-shifting comfort typical of automatic gearboxes in E-Class and S-Class models.

Selection and additional technical information

Before purchasing, it is recommended to compare the OEM part number and interchangeable numbers with the vehicle data, which will confirm full compatibility with the specific engine version and year. Workshops specializing in the Mercedes brand usually use manufacturer catalogs to verify whether a given automatic gearbox corresponds to the factory configuration of a specific vehicle.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other components from the same group, such as housings, torque converters, or mounting elements, check the available parts in the Mercedes automatic gearboxes category.

Expert support and service savings

When making a decision about replacing a transmission, it is worth analyzing the costs of purchasing a used component compared to an overhaul. It may be helpful to familiarize yourself with expert materials regarding gearboxes – especially in the context of differences between original used parts and repair services. To this end, it is worth reading the article Manual gearbox failures in cars – why is an original used part a more reasonable choice than an overhaul?, which discusses key aspects of cost-effectiveness and diagnostics, also useful when analyzing the purchase of an automatic transmission.

Additionally, to better plan your service budget and understand how to utilize the potential of the used parts market, you can use the advice contained in the publication Rising repair costs and the boom in used parts – how to save on car service?, where practical strategies for choosing used OEM elements are discussed.