Mercedes W212 Brake Pedal Assembly Automatic Transmission A2122900501

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W212 Brake Pedal Assembly Automatic Transmission is an original braking control system component designed for W212 generation E-Class models with an automatic transmission. Thanks to its factory design, it ensures correct pedal operating geometry, proper pressure force ratio, and compatibility with the vehicle's factory equipment. It is a practical solution for post-collision repairs, replacing a worn-out mechanism, or restoring the full efficiency of the braking system.

Specifications and technical data

• SKU: A2122900501
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122900501
• Substitutable numbers: A2122900501, A 212 290 05 01
• Gearbox type: Automatic
• Category: Other Brake Parts

Purpose and function in the braking system

The presented brake pedal assembly is dedicated to Mercedes E-Class W212 vehicles equipped with an automatic transmission. It is responsible for the precise transfer of force from the driver's foot to the main braking system and for interacting with the vehicle's sensors and safety components. The design is optimized for the operating characteristics of the automatic transmission, which translates into a predictable vehicle response during braking and stopping.

Construction and mounting fitment

The brake pedal assembly is a complete mechanical module designed for installation in the factory mounting points of the W212 body. Properly selected levers, pivot points, and pedal travel range ensure:

• stable pedal movement throughout the entire stroke range,
• consistency with the factory brake booster system,
• maintenance of an ergonomic pedal position relative to other control elements.

Thanks to the original design, there is no need for modifications or adaptations – the element is designed as part of the system, which facilitates service and reduces the risk of incorrect installation.

Application in vehicles with automatic transmission

In versions with an automatic transmission, the brake pedal also acts as an element that interacts with the transmission control logic. The appropriate pedal travel and resistance characteristics facilitate:

• smooth vehicle stopping in urban traffic,
• controlled starting and stopping on inclines,
• precise braking force modulation at higher speeds.

Selecting the correct pedal assembly for the automatic version is crucial for maintaining consistent braking system operation and vehicle handling comfort.

Product characteristics and condition

The offered element comes from a Mercedes vehicle and is classified as a used part. This means it is an original component that has already been in service, and its construction and geometry correspond to the manufacturer's factory specifications. This type of solution is often chosen for repairs where maintaining compliance with factory equipment and optimizing service costs are important.

Support in selection and technical knowledge expansion

If you are planning a comprehensive repair or upgrade of the braking zone in your Audi and need other elements from the same group, such as discs, pads, or reinforced calipers, it is worth expanding your knowledge about the structural differences between standard and sports versions – you can find a practical comparison in the article Audi RS vs other models – what is hidden under the hood and chassis?.

If you are planning a comprehensive repair or upgrade of the brake control zone in your Mercedes and need other elements from the same group, such as levers, mounts, or additional brackets, check the available parts in the category Other Mercedes.