Mercedes W204 W212 W221 Automatic Gearbox 722908 722.908 2122704309 WARRANTY

Listing details

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

Mercedes W204 W212 W221 Automatic Gearbox 722908 is an automatic transmission from the Automatic gearboxes segment, designed for use with diesel engines in popular mid-size and premium Mercedes models. It is a solution for users who expect smooth gear shifting, stable drivetrain operation, and compliance with the manufacturer's factory standards. By maintaining the original design, the gearbox allows for a technically correct replacement of a worn-out component without interfering with the vehicle's architecture.

Specifications and technical data

• SKU: A2122706009
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122706009
• Substitutable numbers: A2122706009, A 212 270 60 09, 2122706009, A2122704309, A 212 270 43 09, 2122704309, A0002703252, A 000 270 32 52
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission

Application and compatibility

The presented automatic gearbox is intended for installation in Mercedes W204, W212, and W221 class vehicles with diesel engines. The transmission design has been developed to work with factory control systems, which enables the maintenance of proper acceleration characteristics, driving comfort, and predictable vehicle behavior in various road conditions.

Thanks to the use of the original hydraulic-mechanical architecture, the gearbox maintains proper operating standards, and the gear ratios are adapted to the torque of diesel units. This is particularly important in premium class cars, where both dynamics and calm, linear throttle response are valued.

Technical characteristics of the automatic gearbox

The automatic design of the transmission ensures comfortable vehicle operation without the need for manual gear shifting, which relieves the driver, especially in city traffic and during long journeys. The gear ratio system used has been optimized for diesel engines, which allows for efficient use of available torque while maintaining reasonable fuel consumption.

In practice, this means:

• smooth gear shifting under various drivetrain loads,
• stable torque transmission throughout the entire engine operating range,
• preservation of the factory logic of driving modes provided for the given model.

For the user, this translates into predictable car behavior, reduced jerking, and better vehicle control in everyday use.

Benefits of installing a used automatic gearbox

Choosing a used gearbox from the Automatic gearboxes family for a Mercedes allows for a significant reduction in repair costs compared to purchasing a new component, while maintaining the manufacturer's original specifications. This type of solution is particularly beneficial for vehicles used intensively, where a full transmission replacement is more cost-effective than multi-stage repairs of an old unit.

The main advantages of such a replacement include:

• maintaining compatibility with the vehicle's factory control software,
• the ability to restore proper drivetrain operation after the failure of the previous gearbox,
• reducing vehicle downtime due to the installation of a complete transmission.

Before installation, a standard workshop procedure is recommended, including checking the installation, properly filling the system with oil in accordance with the manufacturer's recommendations, and adapting the gearbox using an appropriate diagnostic tester, if required for the specific model.

Gearbox selection and technical support

To correctly select a gearbox for a specific Mercedes vehicle, it is crucial to verify compatibility with the vehicle documentation and factory markings. In practice, this means checking whether the type of automatic transmission used is intended for the given diesel engine and equipment version. In case of doubt, it is worth consulting a workshop specializing in the Mercedes brand or the seller's technical department.

For users who want to deepen their knowledge about typical faults and the principles of safely purchasing a transmission from the secondary market, a guide describing the differences between various types of gearboxes and practical tips regarding the verification of technical condition will be useful. Detailed information can be found in the article Gearbox: manual, automatic or DSG – typical faults and a guide to buying a used gearbox.

Drivetrain modernization expansion

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

Such an approach allows for carrying out service work in a consistent manner – simultaneous inspection and potential replacement of related components reduces the risk of further vehicle downtime and makes it easier to maintain stable operating parameters of the entire drivetrain.