4051031 Dust Boot for Brake Caliper Pins — Renault Trucks

What does a caliper pin dust boot do?

This brake caliper pin dust boot serves as a critical sealing element within the air disc brake system. It is designed to protect the caliper slide pins from harmful contaminants such as water, road salt, mud, and brake dust. By maintaining a secure seal, it ensures that the caliper mechanism can travel smoothly during every braking application, which is essential for consistent braking performance.

Vehicle compatibility and systems

This component is compatible with Renault Trucks and Volvo heavy commercial vehicles. It is also designed as an equivalent to WABCO systems. The part ensures the caliper guide pins remain lubricated and free from debris to prevent sticking or uneven wear.

Installation and maintenance

For optimal performance, these boots should be inspected during every brake pad replacement or routine brake system check. When performing maintenance, ensure the pins are cleaned and properly lubricated with the correct grease before installing the new boot to ensure a proper seal.

Troubleshooting guide

Maintaining the integrity of the caliper pin seals helps prevent premature wear of the brake pads and caliper components. If you notice uneven pad wear or vibrations, it may indicate that the dust boots require replacement.

OE cross-reference

4051031 (Brake Caliper Pin Dust Boot) is the equivalent of the Renault Trucks, Volvo and WABCO OE numbers. This part directly replaces Renault Trucks OE number 7421748972. It also replaces Volvo OE number 21748973 and WABCO OE number 6403199222.