25QD340
Air Brake Automatic Slack Adjuster
Mack

This component plays a vital role in maintaining optimal brake performance by automatically adjusting the slack in the air brake system. It ensures consistent brake pedal feel and reliable stopping power, reducing the need for manual adjustments and enhancing safety during operation. The slack adjuster compensates for brake lining wear, helping to extend the lifespan of brake components and improve overall vehicle efficiency. Its precise mechanism allows for quick and automatic adjustments, minimizing downtime and maintenance costs. Proper functioning of this part is critical for compliance with safety standards and for ensuring the vehicle's braking system operates smoothly under varying load conditions. Source One Parts Center offers high-quality replacements designed to meet or exceed OEM specifications, ensuring durability and dependable performance for your heavy-duty truck.