Mercedes ML 63 AMG W166 GL X166 4Matic Transfer Box Case A2512802200 WARRANTY

Listing details

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

Mercedes ML 63 AMG W166 GL X166 4Matic Transfer Box Case is an original drivetrain component designed for Mercedes vehicles equipped with 4Matic all-wheel drive and an automatic transmission. This used transfer case from this series is a solution for drivers who expect factory-standard drivetrain geometry, predictable vehicle behavior, and consistency with other drivetrain components. By maintaining OEM specifications, it provides a solid foundation for the professional repair or replacement of a damaged component.

Specifications and technical data

• SKU: A2512802200
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2512802200
• Substitutable numbers: A2512802200, A 251 280 22 00
• Gearbox type: Automatic
• Category: Transfer Cases

Purpose and role in the 4Matic drivetrain

The transfer case in the ML 63 AMG W166 and GL X166 models is responsible for precise torque distribution between the axles in the 4Matic system. In combination with the automatic transmission, it ensures smooth power delivery, driving stability, and predictable vehicle behavior on both dry asphalt and surfaces with reduced traction.

Selecting the correct transfer case is crucial for:

• maintaining proper cooperation with the automatic transmission,
• preserving correct gear ratios and the operating characteristics of the 4Matic drive,
• reducing vibrations, jerking, and abnormal noises in the drivetrain.

Benefits of using an original transfer case

Using an original transfer case in a Mercedes with 4Matic drive allows you to maintain the integrity of the entire drivetrain. Compared to unreliable aftermarket replacements, the OEM component ensures:

• factory fitment for mounts, driveshafts, and half-shafts in the specific model,
• compatibility with the automatic transmission control software,
• preservation of the operating characteristics intended by the vehicle manufacturer.

For high-power vehicles such as the ML 63 AMG or GL X166, the proper selection of a transfer case has a direct impact on the durability of other drivetrain components and driving comfort during dynamic acceleration and high cruising speeds.

Integration with the automatic transmission

The presented transfer case is designed to work with an automatic transmission. This means that its design, gear ratios, and control method have been adapted to the characteristics of the automatic transmission used in this generation of Mercedes SUVs.

In practice, a correctly selected transfer case for an automatic transmission:

• minimizes the risk of mechanical overload in the main gearbox,
• ensures smooth engagement and distribution of power between the axles,
• allows for the proper operation of assistance systems (e.g., traction control, electronic stability program), which rely on predictable torque distribution.

Product characteristics and practical application

As a component in the Transfer Cases category designed for Mercedes vehicles, this part is suitable both for standard replacement of a damaged unit and for comprehensive drivetrain rebuilding in cars operated under demanding conditions. The used nature of the part allows for cost optimization of repairs while maintaining a design consistent with the manufacturer's factory specifications.

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, gears, or additional torque distribution modules, check the available parts in the Mercedes Transfer Cases category.

Technical support and knowledge when choosing a used transfer case

When selecting a used transfer case for a Mercedes with 4Matic drive, it is worth paying attention to compatibility with the specific engine version, automatic transmission type, and vehicle model year. It may also be helpful to compare the cost-effectiveness of purchasing a used component versus potentially refurbishing your existing one – differences in costs and durability can be significant depending on the initial condition.

To better prepare for a purchasing decision and understand the specifics of the used parts market, it is worth reading the guide: Used gearbox – when is it worth it and what you need to remember. The article discusses, among other things, the differences between manual and automatic transmissions, compatibility issues, and economic aspects related to refurbishment and replacement.