Brake Caliper Mercedes W140 W210 W220 Rear Left N/S Wheel Brake A0014203983

Brake Caliper Mercedes W140 W210 W220 Rear Left N/S Wheel Brake is an original braking system component from the Brake calipers and brackets group, designed for installation on the rear left axle of Mercedes vehicles. This used OEM component ensures a precise fit with the factory hub and disc, resulting in stable, predictable braking performance and seamless integration with other vehicle systems.

Specifications and technical data

• SKU: A0014203983
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0014203983
• Substitutable numbers: A0014203983, A 001 420 39 83
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and technical fitment

The presented caliper is designed for operation on the rear left side of the vehicle, which is crucial for the correct distribution of braking force and the operation of the brake force distribution system. The OEM design guarantees compatibility with factory mounting points, correct geometry relative to the brake disc, and proper brake pad guidance.

Thanks to the use of an original mounting solution, the caliper works perfectly with the stock brake master cylinder, lines, and ABS/ESP system, which reduces the risk of issues such as bleeding difficulties, uneven braking, or excessive pad wear.

Performance characteristics and role in the braking system

The rear axle brake caliper is responsible for vehicle stabilization during braking, especially during deceleration and when driver assistance systems are active. A properly selected component:

• ensures even pressure of the pads against the disc on the left side of the rear axle,
• maintains the correct position of the pads, minimizing the risk of jamming,
• helps maintain predictable vehicle behavior during emergency braking,
• facilitates service – removal, pad replacement, and periodic maintenance.

Choosing an original brake caliper from a Mercedes vehicle is the preferred solution wherever compliance with factory specifications, repeatability of performance parameters, and the ability to install directly without modifications are required.

Benefits of using a used OEM component

A used brake caliper from a Mercedes vehicle represents a reasonable compromise between repair costs and maintaining a high-quality component. Compared to many low-budget aftermarket replacements, the original element:

• retains factory geometry and manufacturing tolerances,
• is designed for a specific vehicle platform,
• facilitates diagnostics and service in professional workshops.

For users who want to optimize braking system maintenance costs while keeping the configuration close to factory standards, such a component is a practical choice. Maintaining the original specification also supports the future resale value of the car, as the braking system remains consistent with the manufacturer's design.

Professional selection and technical support

When selecting a caliper for a specific Mercedes vehicle, it is crucial to verify compatibility with the manufacturer's markings and the rear axle configuration. It is worth paying attention to:

• compatibility with the body version and model generation,
• the type of braking system used on the rear axle,
• any potential differences resulting from the equipment version.

To better understand how to safely use used braking system components and how to reduce service costs, check out our guide: Brake calipers under the microscope – how to choose original, used braking system components. The article discusses practical aspects of selecting, verifying, and operating reclaimed calipers.

System expansion – related components

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 additional calipers, brackets, or guide supports, check out the available parts in the Mercedes brake calipers and brackets category.