The Meritor 15" x 4" Brake Drum is a top-of-the-line brake drum designed to provide excellent stopping power for heavy-duty vehicles. With a brake size of 15" x 4" and an X30 Balanced type brake drum, this product is engineered to deliver superior performance and reliability. The drum's overall depth of 8.89" ensures an accurate fit with the braking system, while the mounting pilot diameter of 8.99" ensures a secure and reliable fit. This brake drum is made from high-quality cast iron material, which provides exceptional durability and longevity. One of the key benefits of this brake drum is its reduced brake noise compared to lightweight steel shell composite brake drums. This makes it an ideal choice for drivers who want a quieter and more comfortable driving experience. Overall, the Brake Drum is a top-quality product that provides excellent stopping power, reliability, and durability. Whether you're driving a heavy-duty truck or a commercial vehicle, this brake drum is sure to meet your needs and exceed your expectations. FleetPride is your First Click in Heavy Duty®.