Mercedes W221 Rear Left N/S Wheel Brake Caliper A2214230181

Mercedes W221 Rear Left Brake Caliper A2214230181 is an original part from the Brake Calipers and Brackets category, designed for installation on the rear left axle of the vehicle. This used caliper offers a functional service solution for owners of W221 S-Class models who expect factory fitment and stable brake system performance. It's a practical choice for repairing or restoring the original brake configuration in Mercedes vehicles.

Specifications and technical data

• SKU: A2214230181
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2214230181
• Substitutable numbers: A2214230181, A 221 423 01 81
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and Technical Fitment

The presented caliper is designed to operate on the rear left side of the vehicle, which is crucial for proper brake force distribution and the functioning of the stability control system. Its construction matches the factory solutions used in the Mercedes S-Class W221 generation, ensuring that original mounting points, geometry, and compatibility with other brake system components are maintained.

When selecting the correct caliper for a specific body style and engine, it is always advisable to confirm with the OEM part number and interchangeable numbers, which minimizes the risk of incorrect installation and incompatibility with the brake disc or brake line.

Construction Characteristics

As an original Mercedes part, the brake caliper maintains the factory operating characteristics of the piston, springs, and guides, contributing to even pressure on the brake pads against the disc. The mounting system is prepared for standard brackets and carriers, facilitating installation in workshop conditions and reducing the need for additional adapters.

In practice, this means that after correct installation and brake system bleeding, stable and predictable braking performance, in line with the vehicle manufacturer's specifications, can be achieved. A used caliper is a good solution when the existing part has seized, suffered mechanical damage, or corrosion in the working area.

Service Application and Benefits of Installation

Replacing the rear left brake caliper in a Mercedes W221 is particularly important in cases of:

• uneven pad wear on the left and right sides of the rear axle,
• seized piston or guides,
• noticeable vehicle pulling during braking,
• brake fluid leaks around the caliper.

Using an original part from the same model series helps maintain the integrity of the brake system, which is important for both safety and the proper functioning of driver assistance systems. Factory fitment reduces installation time and simplifies the mechanic's work, especially when servicing premium vehicles.

Condition, Verification, and Usage Safety

The offered caliper is a used part, which means it requires standard servicing before installation – including checking the condition of seals, guides, and surfaces that come into contact with the pads. In many cases, workshops opt for additional cleaning and inspection to ensure the longest possible and most stable operation within the brake system.

If you want a step-by-step guide on what to look for when buying used brake components such as discs, calipers, or ABS components, the Global Parts guide will be helpful: Used Brake System – How to Safely Choose Discs, Calipers, and ABS?. This is a practical checklist that helps assess the condition of parts before installation.

Expanding the Offer and Selecting Related Components

For comprehensive rear axle servicing, it is advisable to consider a parallel inspection of the right caliper, brake lines, and the condition of discs and pads to maintain even operation of the entire system. If you are planning a broader range of brake system work on your Mercedes and are also interested in other mounting elements, brackets, or complete calipers for this brand, check the available parts in the Mercedes Brake Calipers and Brackets category.