Peterbilt 387 Drum Brake Parts: Offering a Wide Selection of Essential Components for Semi-Truck Drum Brake Systems. From replacement brake drums and shoes to hardware and accessories, this product lineup has the high-quality parts you need to keep your Peterbilt 387 running safely and efficiently. With a focus on durability and compatibility, these products are designed to meet the demanding needs of semi-truck operations. Whether you're performing routine maintenance or making repairs, you'll find the Peterbilt 387 drum brake components to get the job done right.