4551005 Compatible Brake Caliper Pin Dust Boot

What does a brake caliper pin dust boot do?

This brake caliper pin dust boot serves as a critical protective barrier within the air disc brake caliper assembly. By sealing the pin movement area, it prevents contaminants such as water, road salt, and abrasive dust from entering the slider mechanism, which is essential for maintaining consistent braking force.

Vehicle and system compatibility

The component is designed for use in heavy commercial vehicle braking systems and is compatible with Mercedes-Benz vehicles. It provides an exact fit for the sliding pin mechanisms found in these high-duty applications.

Installation and maintenance

For optimal performance, technicians should inspect these boots during routine brake inspections. Replacing worn or cracked boots helps prevent piston seizure and uneven pad wear. Check the compatibility list to ensure correct fitment for the specific braking system.

System performance and maintenance

Regular maintenance of the caliper pin assembly ensures that the braking force is applied evenly across the disc surface, preventing vibration and noise during deceleration.

OE cross-reference

4551005 (Brake Caliper Pin Dust Boot) is the equivalent of the Mercedes-Benz and Meritor OE numbers. This part directly replaces Mercedes-Benz OE number 0004218386. It also replaces Meritor OE number ST1154.