Brake Caliper Mercedes W213 C238 Rear Left N/S Braking Unit A0004237100

Brake Caliper Mercedes W213 C238 Rear Left N/S Braking Unit is an original braking system component designed for installation on the rear left side of the vehicle. As part of the Brake Calipers and Brackets group, it ensures precise brake pad guidance and stable operation of the entire system, which translates into predictable and safe braking. This used OEM component is a sensible choice for drivers looking for a technically matched solution at an attractive price.

Specifications and technical data

• SKU: A0004237100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0004237100
• Substitutable numbers: A0004237100, A 000 423 71 00
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and compatibility with the braking system

The presented caliper is designed for operation on the rear left axle in Mercedes E-Class W213 generation models and the C238 coupe version. The placement on the vehicle is clearly defined, which facilitates the selection of the correct part during repairs or unilateral replacement. Thanks to the factory OEM design, the proper mounting points, brake pad guidance geometry, and compatibility with the stock brake disc and hardware are maintained.

Construction and function of the brake caliper

The brake caliper is responsible for converting hydraulic pressure into the clamping force of the pads against the disc. This model uses a solution typical for modern mid-to-high-end Mercedes vehicles, ensuring:

• stable pad guidance in the carrier,
• even distribution of braking forces on the disc surface,
• appropriate rigidity of the caliper body,
• serviceability using standard workshop procedures.

An element configured in this way allows for maintaining factory braking performance parameters, which is crucial for safety and the proper operation of assistance systems such as ABS or ESP.

Benefits of using an original used caliper

Choosing an original Mercedes brake caliper from the secondary market is a solution that combines technical correctness with repair cost control. Compared to low-budget replacements, the OEM component offers:

• factory fitment to the hub, disc, and brake lines,
• compliance with the braking system operating parameters specified by the manufacturer,
• preservation of the original brake pedal characteristics.

A used component allows for an economical repair without compromising the design developed specifically for the W213/C238 platform. This is particularly important for vehicles equipped with advanced electronic stability control systems, which require a predictable response from the braking system.

Application in service practice

This brake caliper will prove useful both for the spot replacement of a damaged component and for a broader renovation of the rear axle. It can be used in situations such as:

• mechanical damage to the caliper (e.g., after a collision or corrosion of load-bearing elements),
• excessive wear of the guide pins or piston,
• the need to restore proper operation of the rear left brake.

Thanks to the clear definition of the position on the vehicle, the mechanic can quickly verify the compatibility of the part with the specific car configuration, which reduces the vehicle's downtime in the workshop.

Technical support and selection of used brake components

When selecting a used caliper, it is worth paying attention to compatibility with the vehicle's braking system, the condition of the working surfaces, and the completeness of the mounting elements. Detailed tips on the safe selection of used braking system components – including calipers, discs, and ABS elements – can be found in the article: Second-hand braking system – how to safely choose discs, calipers, and ABS?.

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 carriers, mounts, or additional brackets, check the available parts in the Mercedes Brake Calipers and Brackets category.