Mercedes W251 Automatic Gearbox 722902 722.902 A2512705600 WARRANTY

Listing details

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

Mercedes W251 Automatic Gearbox 722902 722.902 A2512705600 WARRANTY is an original, factory-spec automatic transmission from the Automatic gearboxes range, designed for Mercedes W251 class models. This used unit is a sensible choice for conscious users who expect a proven design, the maintenance of factory operating parameters, and predictable drivetrain performance.

Specifications and technical data

• SKU: A2512706300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2512706300
• Substitutable numbers: A2512706300, A 251 270 63 00, A2512705600, A 251 270 56 00
• Gearbox type: Automatic
• Category: Automatic Transmission

Technical characteristics and purpose

The presented gearbox belongs to the group of Automatic gearboxes used in the Mercedes W251, designed for smooth, comfortable gear shifts and stable torque transfer. The automatic design reduces the loads transferred to the drivetrain, which promotes calm, predictable operation in family and utility vehicles.

Selecting this transmission for a specific vehicle configuration ensures compatibility with factory controller settings, engine operating characteristics, and driver assistance systems. As a result, you can achieve consistent drivetrain performance after replacement, without the need for costly mechanical modifications.

Application in Mercedes W251

The Automatic gearbox dedicated to the Mercedes W251 is designed as an integral part of the model's drivetrain. The appropriate gear ratio configuration and cooperation with the vehicle's electronics ensure predictable acceleration, stable speed maintenance, and comfortable gear shifting in both urban and extra-urban traffic.

Choosing an original, used transmission for the W251 is particularly important for vehicles with higher mileage, where maintaining factory performance characteristics and compatibility with the existing installation is crucial. This type of solution helps reduce the risk of fitment issues that may occur with randomly selected replacements.

Benefits of installing an original automatic gearbox

By choosing to install this gearbox in your Mercedes W251, you gain primarily:

• preservation of factory gear-shifting characteristics,
• consistent operation with the engine control system and vehicle electronics,
• reduced risk of mechanical and electrical compatibility issues,
• the possibility of an economical repair compared to costly remanufacturing.

The original transmission from this series is designed for long-term operation, and using it as a pre-owned part often provides a favorable cost-to-durability ratio. For many users, this is a practical service solution that allows for the restoration of full drivetrain functionality without overstretching the budget.

Selection, installation, and service aspects

Before installation, it is recommended to verify the compatibility of the gearbox with the specific vehicle equipment version, model year, and engine used. The workshop performing the service should have experience working with Mercedes automatic transmissions, which facilitates proper system bleeding, oil refilling, and controller adaptation after replacement.

In service practice, the cost of installing an original, used gearbox is often compared with the expenses of a full remanufacturing. In many cases, choosing a verified used unit allows for shorter repair times and reduced costs, while maintaining satisfactory durability and transmission operating culture.

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 sub-assemblies, check the available parts in the Mercedes automatic gearboxes category.

Substantive support and knowledge about gearboxes

When planning a drivetrain repair, it is worth knowing the differences between remanufacturing and installing an original used part, typical symptoms of damage, and estimated workshop labor costs. A guide material discussing these issues may be helpful – especially in the context of investment profitability. You can find more information in the article: Manual gearbox failures in cars – why is an original used part a more sensible choice than remanufacturing?.

If you are interested in a broader context of technical solutions used by the manufacturer, including the development of automatic transmissions in subsequent model generations, a review of the brand's evolution may also be helpful, available in the material: Evolution of the Mercedes S-Class: from W140 to W222 – innovations, model differences, and Mercedes auto parts over the years.