Peterbilt 388 Brake Chambers & Accessory - Essential Truck Parts for Smooth Braking and Reliable Performance Keep your Peterbilt 388 running smoothly with our comprehensive selection of brake chambers, slack adjusters, and other critical brake components. From service chambers and spring brake chambers to automatic slack adjusters and rubber hoses, we offer the high-quality parts you need to ensure safe, reliable braking performance. Optimize your Peterbilt's braking system with our selection of top-brand parts, designed to provide long-lasting durability and precise, responsive operation. Whether you're maintaining your current rig or upgrading, count on our Peterbilt 388 brake parts to keep you moving down the road with confidence.