Mercedes W204 Brake Caliper Rear Left N/S Wheel Brake Unit A2044231781

The Mercedes W204 Rear Left Brake Caliper is an original part from the Brake Calipers and Brackets category, designed for installation on the rear left axle of Mercedes W204 class vehicles. This used caliper offers a functional service solution for drivers who expect factory fitment and stable brake system performance.

Specifications and technical data

• SKU: A2044231781
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2044231781
• Substitutable numbers: A2044231781, A 204 423 17 81, A2044230106, A 204 423 01 06
• Location on the vehicle: Rear, Left
• Category: Calipers & Brackets

Vehicle Application and Placement

The presented brake caliper is designed for operation on the rear left side of the vehicle. It is responsible for evenly pressing the brake pads against the disc, which translates to stable deceleration and proper functioning of the main and parking brakes on this axle.

Selecting the correct caliper for the specific side of the vehicle is crucial for:

• maintaining the correct geometry and guiding of the brake pads,
• ensuring even distribution of braking force between the left and right sides,
• proper interaction with the brake lines and mounting points on the rear beam.

Original Origin and Compatibility

The caliper originates from the Mercedes line, meaning it is a component that meets the manufacturer's factory standards. Its original origin ensures:

• precise fitment with the caliper bracket and hub in W204 models,
• maintenance of factory brake system performance parameters,
• easier identification by OEM part number and available replacement numbers (visible in the technical specifications).

This makes the caliper the right choice for repairs where maintaining original braking characteristics and compliance with service documentation is a priority.

Technical Characteristics and User Benefits

As a friction system component, the rear left caliper in the Mercedes W204 ensures stable operation across a wide range of temperatures and loads. The manufacturer's design provides:

• adequate body rigidity, limiting deformation during intense braking,
• proper guiding of the piston and pads, promoting even wear of the friction material,
• compatibility with standard brake lines and mounting hardware.

Choosing a used, original caliper is often a cost-effective solution when aiming to preserve the factory design while optimizing repair costs. A correctly selected brake caliper allows for the restoration of proper braking effectiveness without the need to modify other system components.

Service Application and OEM Number Selection

This caliper model is particularly useful for professional workshops and discerning owners who select brake system components based on OEM part numbers and replacement numbers. This information is detailed in the technical specifications section and allows for precise component matching to a specific equipment version and vehicle year.

When selecting used brake system components, it is advisable to follow a proven verification procedure. Detailed guidance can be found in the article: Second-hand Brake Systems: How to Safely Select Discs, Calipers, and ABS?, which describes practical steps for visual inspection, wear assessment, and the importance of OEM numbers.

Alternative Mercedes Brake Calipers and Brackets

If you are looking for other components from the Brake Calipers and Brackets category dedicated to this brand, check out the Mercedes Brake Calipers and Brackets available in our assortment. This will allow you to compare different variants, select the appropriate caliper for the opposite side of the axle, or assemble a complete set of mounting components for a specific model.

Summary

The Mercedes W204 Rear Left Brake Caliper is an original, used part intended for the rear left axle, ensuring factory fitment and predictable brake system operation. Choosing this caliper is a sensible solution for service repairs where compliance with manufacturer documentation, stable braking parameters, and precise selection by OEM and reference numbers (visible in the technical specifications) are important.