Mercedes W204 Rear Axle Brake Discs Left Right N/O/S SET X2 A0004231312

Mercedes W204 Rear Axle Brake Discs Left Right N/O/S SET X2 is an original brake system component set designed for the rear axle, prepared for installation on the left and right sides of the vehicle. This product from the Brake discs category ensures factory-fit compatibility with the Mercedes brake system design, which facilitates servicing and reduces the risk of compatibility issues. It is a practical solution for users who want to maintain consistent brake performance parameters on both wheels of the rear axle.

Specifications and technical data

• SKU: A0004231312
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0004231312
• Substitutable numbers: A0004231312, A 000 423 13 12
• Location on the vehicle: Rear, Right, Left
• Part type: Brake Disc Rotor
• Category: Brake Disc Rotors

Purpose and fitment for the Mercedes W204 rear axle

The set includes two discs designed for the rear axle, with dedicated positioning for the left and right sides. This solution allows for the simultaneous replacement of both working elements of the brake system, which is recommended for even wear and stable braking force. The set is prepared specifically for the Mercedes W204 brake system design, ensuring the correct geometry for calipers and pads.

Technical and functional characteristics

The discs in this set operate within the standard rear axle brake system, working with factory calipers and pads intended for the specific model. The properly selected working surface of the discs promotes stable friction and predictable braking characteristics under typical operating conditions. Using a pair of discs from a single set helps maintain consistent performance parameters on both sides of the axle, which translates into better vehicle control during straight-line braking and cornering.

These components are intended for installation in the rear of the vehicle, where the brake system is responsible not only for deceleration but also for stabilizing the vehicle's path during heavy braking. Properly selected rear discs support the operation of assistance systems, such as ABS or electronic stability control, maintaining a predictable response to brake pedal pressure.

Product condition and service application

The offered set of brake discs is in used condition, which provides a cost-effective solution while maintaining the manufacturer's original specifications. Such components are often chosen in situations where the priority is to maintain the factory brake system design while optimizing repair costs. Used discs can be used both for routine maintenance and for restoring vehicle performance after brake system repairs.

Choosing original recycled components is particularly important for models where maintaining compliance with factory brake system parameters is crucial. This helps reduce the risk of improper fitment or changes in braking characteristics, which can be a problem with randomly selected aftermarket replacements.

Benefits of installing a rear axle brake disc set

Using a complete set for the rear axle provides a number of practical service and operational benefits:

• simultaneous replacement of both discs promotes even pad wear and stable braking force,
• maintaining consistent parameters on the left and right sides of the axle improves vehicle predictability,
• the original origin of the components facilitates installation and reduces the need for additional adjustments,
• a cost-effective solution compared to new parts, while maintaining the factory system design.

For users planning to service the rear brake system on a Mercedes W204, this set is a convenient way to restore proper brake operation while remaining compliant with the manufacturer's design.

Expanding brake system service and technical knowledge

When working on the rear axle, it is also worth considering the condition of other brake system elements, such as calipers, pads, or lines. The proper combination of discs with other components has a direct impact on braking efficiency and the even wear of friction elements. To better understand how choosing original recycled parts affects safety and repair costs, it is worth reading our guide: Brake calipers under the microscope – how to lower brake system repair costs by choosing verified recycled parts.

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