9505
Spring for Master Piston
Detroit Diesel

The master piston spring is fundamental in regulating brake system response, particularly in air brake applications common in heavy-duty trucks. It provides the necessary force to return the piston to its resting position after brake application, ensuring consistent brake release and preventing inadvertent dragging. The spring’s design must withstand repetitive compression cycles and resist fatigue, maintaining its tension over many miles of operation. Properly functioning springs contribute directly to brake efficiency, safety, and longevity of the entire braking system. They also help balance brake pressure across multiple chambers, ensuring uniform stopping power. Sourcing these springs from Source One Parts Center guarantees high-quality, reliable components essential for maintaining optimal brake system performance in demanding conditions.