Mercedes W212 W204 Automatic Gearbox 722646 722.646 5 Speed A2122700500 WARRANTY

Listing details

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

Mercedes W212 W204 Automatic Gearbox 722646 722.646 is a factory-original automatic transmission from the Automatic gearboxes family, designed for Mercedes models. This is a solution for users who expect stable drivetrain performance, smooth gear shifting, and the preservation of the vehicle's original driving characteristics.

Specifications and technical data

• SKU: A2122705500
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122705500
• Substitutable numbers: A2122705500, A 212 270 55 00, A2122705600, A 212 270 56 00, A2122700500, A 212 270 05 00
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical specifications and intended use

The offered automatic gearbox belongs to the designs used as standard in Mercedes mid-size and luxury cars, which translates into predictable drivetrain behavior and compatibility with factory controller settings. The applied gearbox type: automatic ensures comfortable, seamless gear shifting for the driver, reducing jerking and improving the overall refinement of the drivetrain.

The transmission is suitable for users who want to restore full drivetrain efficiency after a failure of their current gearbox or perform a preventive replacement based on the original design used by the vehicle manufacturer.

Application in Mercedes vehicles

The automatic gearbox from this series is designed to work with the electronic and mechanical systems used in Mercedes models, which allows for maintaining correct shift points, driving mode logic, and compatibility with factory safety systems. Thanks to this, after proper installation and adaptation, it is possible to achieve performance characteristics similar to the originally installed transmission.

This solution will work well both in daily-driven cars and in fleet vehicles, where operational repeatability, service predictability, and ease of diagnostics based on standard Mercedes service procedures are important.

Benefits of installing an automatic gearbox

Replacing a worn or damaged transmission with the presented automatic gearbox allows you to:

• restore proper drivetrain operation and smooth gear shifting,
• reduce the risk of slipping, jerking, and throttle response delays,
• maintain compliance with the factory configuration of the Mercedes vehicle,
• facilitate further diagnostics by preserving the original system architecture.

For many users, it is crucial that the original automatic gearbox helps avoid problems typical of aftermarket replacements of uncertain origin, and also facilitates compatibility with the existing wiring harness and control modules.

Condition and installation aspects

The product is offered as a used component, which in practice means that before installation, it is worth considering standard service procedures, such as checking for leaks, verifying the condition of connectors, and changing the oil and filter in accordance with the vehicle manufacturer's recommendations. Such an approach increases the chance of long-term, stable transmission operation after installation.

When selecting a gearbox for a specific car, it is recommended to compare the vehicle's identification data and consult with a mechanic or technical advisor to confirm structural and software compatibility with your Mercedes model.

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 a torque converter, control elements, or additional transmission parts, check the available parts in the Mercedes automatic gearboxes category.

Technical support and selecting a used gearbox

When purchasing a used automatic transmission, it is worth paying attention to the donor vehicle's service history, type of use, and recommendations regarding the first start-up after installation (adaptation, bleeding, test procedures). Practical tips in this regard, as well as a discussion of typical faults of various types of transmissions, can be found in the article: Gearbox: manual, automatic or DSG – typical faults and a guide to buying a used gearbox.