Automatic Gearbox Mercedes W204 W212 W221 722908 722.908 A2122708009 WARRANTY

Listing details

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

Automatic Gearbox Mercedes W204 W212 W221 722908 is an automatic transmission designed for diesel vehicles, engineered by Mercedes to provide smooth, predictable gear shifts and stable drivetrain operation. This used transmission from this series is an excellent choice for professional repairs or replacing a factory gearbox in mid-size and premium cars, where compatibility with vehicle electronics and proper torque transfer are essential.

Specifications and technical data

• SKU: A2122708008
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122708008
• Substitutable numbers: A2122708008, A 212 270 80 08, A2122708009, A 212 270 80 09
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and technical specifications

The described gearbox belongs to the Automatic gearboxes category and has been configured to work with diesel power units in Mercedes W204, W212, and W221 class models. The design of this transmission is optimized for driving comfort, stable acceleration, and reduced jerking during gear changes, which is important both in daily use and during highway driving.

Automatic gear control ensures repeatable, predictable drivetrain responses, which facilitates the operation of driver assistance systems and safety features. Using this gearbox in a diesel-powered vehicle allows for efficient utilization of the torque characteristics typical of diesel engines, improving the overall refinement of the drivetrain.

Benefits of using an automatic transmission in a Mercedes

In Mercedes W204, W212, and W221 class vehicles, an automatic transmission of this type impacts several key areas of operation:

• increased driving comfort due to smooth gear changes without the need to operate a clutch,
• better matching of gear ratios to the characteristics of the diesel engine,
• stable vehicle behavior at higher speeds,
• consistent cooperation with factory drivetrain control systems.

For the user, this means more predictable vehicle behavior, less fatigue during city driving, and the ability to fully utilize the potential of the power unit. For professional service centers or workshops, installing such a gearbox allows for compliance with the manufacturer's factory specifications, which is crucial when repairing premium class vehicles.

Application in diesel-powered vehicles

The gearbox has been prepared to work with a diesel drivetrain, which translates into appropriate gear ratios and torque converter operating characteristics. As a result, the transmission handles the high torque available at low RPMs, typical of diesel engines, more effectively. In practice, this improves starting dynamics, flexibility during overtaking, and reduces excessive mechanical stress.

Automatic gear control combined with a diesel engine also helps maintain stable engine RPM, which can influence fuel consumption and the refinement of the power unit. For users expecting calm, predictable driving and smooth acceleration, this is a configuration often chosen for repairs and transmission replacements in these generations of Mercedes.

Choosing a used gearbox and technical support

When selecting a used automatic transmission for a Mercedes, it is crucial to match it to the specific engine version, model year, and control system used. Precise identification by OEM part number and interchangeable numbers helps avoid compatibility issues and speeds up the installation process in the workshop. A properly selected transmission minimizes the risk of communication errors with the vehicle's electronics and reduces the need for additional modifications.

To better understand the differences between various types of transmissions and to make an informed purchase of a used component, it is worth reading the guide: Gearbox: manual, automatic, or DSG – common faults and a guide to buying a used gearbox. The article discusses the characteristics of various solutions, typical signs of wear, and practical tips for selecting a gearbox from the secondary market.

Expanding the scope of drivetrain repairs

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

This approach allows you to supplement or replace several related components in a single service stage, which reduces the risk of further vehicle downtime and makes it easier to maintain the consistency of the entire drivetrain. For workshops, this means a more predictable work schedule, and for the user – greater confidence in the technical condition of key drivetrain elements.