4004008 Brake Caliper Cover Bolt

The 4004008 is a high-strength component engineered to secure the brake caliper cover within heavy commercial vehicle braking systems. Designed with a precise M16 x 1.5 thread and 40 mm specification, this bolt ensures stable assembly and long-term durability under demanding road conditions. It plays a critical role in maintaining the structural integrity of the air disc brake mechanism.

This part is the OE-equivalent for the WABCO brake systems used in WABCO PAN 19 DOUBLE and WABCO PAN 22 DOUBLE models. By providing a reliable fastening solution, it ensures the caliper cover remains securely positioned during standard operation. Its design adheres to strict technical tolerances required for heavy-duty braking components.

Workshop technicians should ensure that all threads are clean and free of debris before installation to maintain optimal torque application. This bolt is specifically designed for use in air disc brake systems where precise mechanical fitment is essential for safety and performance. Regular inspections of fastening components during brake service intervals are recommended to prevent loosening due to vibration.

As a specialized component, this bolt is essential for professional maintenance of heavy-duty braking hardware, ensuring that the caliper assembly remains stable and compliant with system requirements.