Mercedes W212 Rear Alloy Wheel Rim Black 18" ET:54 9J A2124012402

Visual condition of the part

The product shows signs of use visible in the photos. Mercedes W212 Rear Alloy Wheel Rim Black 18" ET:54 9J is an original component from the Wheels category, designed for the rear axle of Mercedes vehicles. The black aluminum rear wheel rim ensures an aesthetic appearance while maintaining factory geometric parameters, which are crucial for handling stability and proper suspension performance.

Specifications and technical data

• SKU: A2124012402-7
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2124012402
• Substitutable numbers: A2124012402, A 212 401 24 02
• Location on the vehicle: Rear
• Rim diameter: 18"
• Rim width: 9
• Offset (ET): 54
• Hole diameter: 112
• Number of holes: 5
• Rim material: Aluminium
• Category: Rims

Purpose and compatibility with Mercedes

The presented rear alloy wheel rim has been designed specifically for Mercedes W212 class models, maintaining the correct hub seating and appropriate bolt pattern. This ensures the proper geometry of the running gear, which translates into predictable handling, even tire wear, and correct interaction with the vehicle's safety systems. The rim is an OEM component, meaning its construction, profile, and mounting parameters meet the manufacturer's factory requirements. For the user, this means easy installation without the need for spacers or non-factory solutions, as well as a visually consistent look with the rest of the bodywork.

Construction, material, and geometric parameters

The rim is made of aluminum, which provides a favorable strength-to-weight ratio and good resistance to operational loads. The aluminum construction promotes precise handling while allowing for more advanced spoke shapes and rim profiles compared to steel wheels. Key geometric parameters, such as diameter, width, offset, bolt pattern, number of mounting holes, and center bore diameter, have been selected in accordance with the requirements of the rear axle in the Mercedes W212. This combination guarantees:

• proper tire seating on the rim,
• correct wheel positioning relative to the wheel arch and suspension components,
• stable mounting on the hub without play or stress in the bolt system. The black color of the rim emphasizes the car's character, complements both light and dark body paints well, and helps to visually hide typical operational dirt from the braking system.

Performance characteristics and application

As a rear axle component, the rim operates under significant loads related to the transmission of drive torque, vehicle weight, and lateral forces during cornering. The aluminum construction with properly selected geometric parameters supports driving stability, improves steering response, and contributes to comfort in dampening irregularities. The rim is suitable both as a replacement for a damaged component and when replacing a single unit in an existing set. It allows for maintaining consistency of wheel parameters on the axle, which is important from the point of view of safety and even loading of suspension and drivetrain components.

Condition, verification, and technical aspects

The rim comes from the secondary market, which allows for an economical replacement of the component while maintaining factory specifications. Before installation, a standard inspection for any signs of wear, radial and axial runout, and airtightness when used with a tire is recommended, in accordance with good service practices. When selecting a rim for a specific vehicle, it is worth paying attention to the compatibility of parameters with the other wheels on the car. Comparing data with the vehicle's documentation or the existing set of wheels can be helpful to maintain uniform driving characteristics and visual appearance.

Expanding your Mercedes wheel configuration

If you are planning a comprehensive repair or upgrade of the running gear in your Mercedes and need other components from the same group, such as additional rims, wheel sets, or alternative rim designs, check out the available parts in the Mercedes Wheels category.

More on selecting and replacing wheels

When replacing a single rim or a complete set, it is worth paying attention to the markings related to wheel offset and bolt pattern to avoid problems with vehicle handling and steering system operation. Practical tips on interpreting rim parameters, assessing their condition, and the principles of replacing a single unit versus a whole set can be found in the article: Do scratched rims ruin the look of your car? Used original alloy wheels for Audi and BMW as a quick way to a makeover. To extend the trouble-free service life of secondary market components, including alloy wheels, it is worth using appropriate cleaning, periodic inspection, and maintenance procedures. Practical advice in this regard is described in the post: How to extend the life of used car parts?, which discusses good service practices for used components.