3551006 Caliper Pin Dust Boot for Mercedes-Benz

What does a caliper pin dust boot do?

This caliper pin dust boot serves as a critical sealing component within the air disc brake caliper assembly. By covering the caliper pins, it prevents moisture, road salt, and abrasive debris from entering the sliding mechanism. Maintaining a clean environment around the pins is essential to prevent seizing and ensure consistent braking performance in heavy commercial vehicles.

Compatibility and application

This component is designed for use in Mercedes-Benz vehicles and is compatible with Knorr-Bremse systems. It provides a reliable seal for the guide pins that manage the axial movement of the caliper, ensuring the braking force is applied evenly across the disc.

Maintenance and installation

For optimal performance, technicians should inspect these boots during routine brake service. Replacing worn or cracked boots can prevent more expensive repairs involving caliper seizure or pin replacement. Ensure the boot is seated correctly within its bore to maintain a complete seal against external elements.

Service guidance

When performing maintenance on air disc brake systems, it is vital to check both short-stroke guide pins and long-stroke slide pins, as they may require different boot configurations to accommodate their respective travel distances.

OE cross-reference

3551006 (Brake Caliper Pin Dust Boot) is the equivalent of the Knorr-Bremse and Mercedes-Benz OE numbers. This part directly replaces Knorr-Bremse OE number II350470061. It also replaces Mercedes-Benz OE number 0014206683.