Mercedes W204 W207 W212 Clutch Master Cylinder A2042900112

Mercedes W204 W207 W212 Clutch Master Cylinder is a precision component of the Clutch hydraulics system, designed to work with the automatic transmission in selected mid-range and premium Mercedes models. This used original component ensures consistency with the vehicle's factory design, which facilitates installation and reduces the risk of operational issues. It is a solution for users who expect a technically matched part while maintaining reasonable service costs.

Specifications and technical data

• SKU: rhd-A2042900112
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2042900112
• Substitutable numbers: A2042900112, A 204 290 01 12
• Gearbox type: Automatic
• Category: Clutch Hydraulics

Purpose and function in the Clutch hydraulics system

The presented Mercedes W204 W207 W212 Clutch Master Cylinder is responsible for generating hydraulic pressure in the clutch control system, working in conjunction with the automatic transmission. A properly functioning component in this group is crucial for smooth engagement and disengagement of the drive, which translates into gear shifting comfort and the stability of the entire drivetrain.

Thanks to a design compliant with factory Mercedes standards, the cylinder maintains proper operating parameters, such as piston stroke characteristics, tightness, and resistance to thermal and pressure loads typical for hydraulic systems in modern automatic transmissions.

Benefits of using an original Mercedes component

Using an original component in the Clutch hydraulics group allows for maintaining the consistency of the entire drivetrain with the vehicle manufacturer's specifications. In practice, this means:

• maintaining factory pedal feel and clutch control characteristics,
• reducing the risk of leaks and pressure drops in the hydraulic circuit,
• better compatibility with other system components, such as lines and the slave cylinder,
• easier diagnostics in case of potential future faults.

For workshops and users, this means more predictable installation and less susceptibility to problems resulting from inaccurate aftermarket replacements.

Technical characteristics and automatic transmission

The cylinder has been designed to work with an automatic transmission, which requires appropriately selected hydraulic characteristics. In such systems, the following are particularly important:

• stable maintenance of operating pressure across a wide temperature range,
• precise response to control signals from the pedal system or control module,
• resistance to long-term loads resulting from city and highway driving.

As a result, the part can support smooth, predictable gear shifting, which is important for both driving comfort and the durability of other drivetrain components.

Condition, installation, and service application

The offered item is used, making it an attractive option for repairs where a balance between cost and maintaining original manufacturer specifications is important. Such components are frequently chosen for:

• clutch control system repairs following hydraulic failure,
• comprehensive work on the automatic transmission,
• servicing fleet vehicles where the repeatability of technical solutions is important.

Due to its factory origin, the cylinder is structurally prepared for installation in the designated mounting points, which facilitates the mechanic's work and reduces vehicle downtime.

Support with selection and expansion of the Clutch hydraulics system

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 hydraulic lines, slave cylinders, or additional control elements, check the available parts in the Mercedes Clutch hydraulics category.

For users interested in a broader context of operation and service costs of modern power units, an article comparing popular BMW diesel engines may be helpful – more information can be found in the material BMW N47 vs M57 / M57N / M57N2 – a ranking of legendary diesels, which discusses, among other things, the impact of design on durability and the availability of aftermarket parts.