4004009 Brake Caliper Cover Bolt

This heavy-duty grade bolt is a critical fastening component within the air disc brake system, specifically designed for the brake caliper cover. It provides essential structural integrity to ensure the caliper assembly remains secure under high-pressure braking conditions, maintaining the reliability of the braking mechanism in heavy commercial vehicles.

4004009 is the OE-equivalent part used in WABCO MAXX 22 L, MAXX 19, MAXX 22, and MAXX 22 T systems. This part is engineered to meet the strict technical requirements of heavy-duty braking hardware, ensuring precise fitment and long-term stability during operation.

For workshop technicians, this M8 x 1.25 / 16 mm bolt is essential during brake maintenance or caliper overhauls. It is recommended to check the thread integrity and torque specifications during installation to ensure optimal performance of the air disc brake system. Proper installation of this high-strength component prevents loosening due to vibration and thermal cycles.

Maintaining regular inspections of brake caliper fasteners is vital for fleet safety. Using a high-quality component like this ensures that the caliper cover remains properly positioned, protecting internal components from environmental debris and maintaining consistent braking force.