ABS 428561 Brake Caliper

ABS 428561 Brake Caliper

The ABS 428561 Brake Caliper is a high‑performance braking component designed for rear axle applications in a wide range of Mercedes‑Benz vehicles, including the W124, W201, W202, and E‑Class series. It delivers reliable stopping power while maintaining durability under demanding driving conditions.

Key Features

• Material: Heavy‑grade cast iron with a grey enamel finish for corrosion resistance.
• Design: Dual piston configuration providing balanced pressure distribution across the brake pad surfaces.
• Compatibility: Engineered to fit rear calipers on Mercedes‑Benz models such as the 190 (W201), C‑Class (W202), E‑Class (W124), and various 124 Berlina variants.
• Dimensions: Standardized mounting flange and bore dimensions that match OEM specifications, ensuring a seamless fit during installation.
• Performance: Optimized piston travel and seal design reduce brake fade, enhancing safety on long descents or spirited driving sessions.

Installation Overview

Installing the ABS 428561 Brake Caliper involves a straightforward process that follows standard rear brake assembly procedures:

1. Remove Existing Caliper: Detach the caliper from the wheel hub, carefully disconnecting hydraulic lines and retaining clips.
2. Clean Mounting Surface: Inspect the mounting flange for corrosion or debris; clean with a solvent to ensure proper seal contact.
3. Position New Caliper: Align the caliper’s mounting holes with the hub, ensuring that the piston faces are correctly oriented toward the brake pads.
4. Secure Fasteners: Tighten bolts to the manufacturer’s torque specifications, using a calibrated torque wrench for accuracy.
5. Re‑attach Hydraulic Lines: Connect the brake lines and verify that there are no leaks. Bleed the system to remove air pockets.
6. Test Drive: Perform a short test drive to confirm proper braking response and check for any abnormal noises or vibrations.

Material & Construction Details

The caliper’s cast iron body is engineered with a grey enamel coating, which offers excellent resistance to rust and environmental degradation. The dual piston assembly utilizes high‑strength steel pistons, each equipped with precision O‑rings that maintain hydraulic integrity over extended service life.

Performance Characteristics

• Brake Pad Compatibility: Works seamlessly with standard ABS brake pads designed for Mercedes‑Benz rear applications.
• Piston Travel: Optimized to provide consistent pressure across the pad surface, reducing uneven wear.
• Heat Dissipation: The cast iron construction facilitates efficient heat transfer away from the braking system, mitigating brake fade during heavy use.

Maintenance Tips

To preserve optimal performance of the ABS 428561 Brake Caliper, follow these maintenance guidelines:

• Inspect pistons and seals annually for wear or damage.
• Replace brake fluid every 2–3 years to maintain hydraulic pressure.
• Check for any signs of corrosion on the caliper body; clean with a mild abrasive if necessary.
• Ensure that all mounting bolts remain tight and free from thread damage.

Compatibility Summary

The ABS 428561 Brake Caliper is specifically engineered for rear axle applications in the following Mercedes‑Benz models:

• W124 Berline (190, C‑Class)
• W201 (Mercedes‑190)
• W202 (E‑Class)
• Various 124 Berlina variants

Its design adheres to OEM specifications, ensuring a perfect fit and reliable braking performance across these platforms.

Conclusion

The ABS 428561 Brake Caliper combines robust construction, precise engineering, and proven compatibility with a range of Mercedes‑Benz rear axle systems. Its dual piston design, corrosion‑resistant finish, and heat‑management features make it an excellent choice for drivers seeking dependable braking performance without compromising on durability.