Mercedes W415 Rear Brake Caliper Braking Unit Left N/S A4154201083

Mercedes W415 Rear Brake Caliper Braking Unit Left N/S is an original braking system component designed for installation on the rear axle on the driver's side. As part of the Brake Calipers and Brackets group, it ensures proper brake pad guidance and stable operation of the entire braking system, which translates into predictable vehicle behavior and safe deceleration.

Specifications and technical data

• SKU: A4154201083
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4154201083
• Substitutable numbers: A4154201083, A 415 420 10 83
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Purpose and vehicle placement

The presented caliper is designed for operation on the rear axle on the left side, which is important for both correct installation and even distribution of braking forces. The dedicated placement reduces the risk of incorrect part selection and allows the mechanic to quickly identify the correct component during braking system service.

Technical and functional characteristics

The Mercedes W415 Rear Brake Caliper Braking Unit Left N/S is responsible for precisely pressing the pads against the disc, stabilizing braking force, and maintaining the correct operating geometry of the pads. The design provided by the vehicle manufacturer ensures:

• appropriate rigidity of the caliper body,
• correct pad guidance in the bracket,
• compatibility with the factory hydraulic system of the given model,
• maintenance of the rear axle braking characteristics specified by the manufacturer.

Thanks to this, the element can be used both for standard replacement of worn components and for post-accident repairs, where restoring the factory operating parameters of the braking system is crucial.

Original origin and fitment for Mercedes

The caliper was developed for Mercedes vehicles, which means full compatibility with factory mounts, brake lines, and other system components. The original design eliminates the need for modifications, facilitates installation, and allows for consistency with other brake components, such as discs and pads intended for the W415 platform.

Condition and service application

The item comes from the used parts segment, making it an attractive solution for economical vehicle repair while maintaining the manufacturer's original specifications. Such a caliper will prove useful in workshops specializing in Mercedes service, as well as for individual users looking for a component consistent with the factory braking system design.

Braking system expansion and selection of other elements

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

When selecting used braking system components – especially calipers – it is worth paying attention to structural compatibility, completeness, and technical condition. A detailed list of aspects to verify before purchase can be found in our guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?.