Mercedes W212 Rear Axle Brake Disc Left Right N/O/S A0004230912

Mercedes W212 Rear Axle Brake Disc Left Right N/O/S is an original brake system component designed for the rear axle, suitable for both the right and left sides. This product from the Brake discs category has been specifically engineered for Mercedes E-Class W212 models, ensuring consistency with factory braking characteristics. It is a solution for users who expect predictable brake system performance and the maintenance of parameters in accordance with the manufacturer's design.

Specifications and technical data

• SKU: A0004230912
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0004230912
• Substitutable numbers: A0004230912, A 000 423 09 12
• Location on the vehicle: Rear, Right, Left
• Category: Brake Disc Rotors

Purpose and compatibility

The presented rear brake disc has been developed for the rear axle of the Mercedes W212, with the possibility of installation on both the right and left sides. This allows it to be used for a single replacement or as a set for the rear axle, maintaining consistent braking characteristics on both sides of the vehicle. The design is matched to the factory brake system, which facilitates installation and reduces the risk of fitment issues.

Technical and functional characteristics

The disc operates within the standard Mercedes brake system, working in conjunction with appropriately selected brake pads and calipers designed for the W212. The proper geometry of the friction surface and the correct mounting profile allow for stable operation during daily use, as well as during more intensive emergency braking. The use of an original solution promotes even pad wear and predictable brake pedal response.

Thanks to the dedicated placement on the vehicle (rear, right, left), the risk of improper installation is minimized, and the service department has clear information regarding which zone of the vehicle the component should operate in. This is particularly important when servicing systems with advanced brake assist features, where correct component positioning affects the operation of the electronics.

Benefits of using an original Mercedes brake disc

Using an original rear brake disc in a Mercedes W212 allows for the preservation of factory brake system performance parameters. Key advantages include:

• consistency with the vehicle's factory braking characteristics,
• secure fitment to the hub and caliper,
• predictable wear when paired with appropriate pads,
• maintenance of proper thermal stability during braking.

The product in used condition can be an economical solution for repairs where maintaining the original design is crucial, while simultaneously optimizing service costs. It is a practical option for post-accident repairs or restoring the efficiency of the brake system in vehicles that are used intensively.

Application in service practice

The Mercedes W212 Rear Axle Brake Disc Left Right N/O/S will prove effective both in workshops specializing in the Mercedes brand and in independent service centers handling premium vehicles. The component can be used for:

• replacing worn discs on the rear axle,
• repairs following mechanical damage within the rear suspension,
• restoring proper brake system operation after the vehicle has been stationary for an extended period.

The selection of the correct disc for a specific engine version and vehicle equipment level should always be based on catalog data and manufacturer markings, which helps avoid compatibility issues.

Selection support and additional materials

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other components from the same group, such as additional discs, pads, or brake lines, check the available parts in the Mercedes Brake discs category.

When choosing used brake system components, it is worth following proven inspection procedures. Detailed tips on how to safely select discs, calipers, and ABS system components can be found in the article: Second-hand brake systems: how to safely select discs, calipers, and ABS?

Summary

The rear brake disc designed for the Mercedes W212, installed on the right or left side of the rear axle, is a solution that allows for the preservation of factory braking characteristics and compatibility with the vehicle's original system. This product from the Brake discs category will prove effective in service repairs where correct fitment, predictable operation, and the possibility of economically restoring the brake system's efficiency in Mercedes vehicles are prioritized.