Peterbilt 379 Drum Brake Parts

Peterbilt 379 Brake Shoes & Drums to Boost Performance

Maximizing the braking efficiency of a Peterbilt 379 requires a precision-engineered approach to the entire S-cam foundation. Upgrading to Long Stroke Air Brake Diaphragms (available in Types 24 to 36) provides a critical safety margin, ensuring full actuation even as 16.5 x 7-inch Outboard Brake Drums expand under high heat.

Find Camshaft Bushings, Air Brake Diaphragms & Brake Shoe Hardware

To maintain DOT compliance and consistent stopping power, integrating Gunite-style (10 spline) Automatic Slack Adjusters is essential for keeping the shoe-to-drum clearance perfectly tuned. However, for owner-operators looking to eliminate steering wheel vibration, the solution often lies in the "connective tissue" of the wheel end. Replacing standard nylon with Bronze Camshaft Bushings provides superior stability, while Tru-Balance Drum Spacers eliminate the radial runout that leads to uneven tire wear and "wheel hop." Whether you are performing a complete overhaul with a Brake Rebuild Kit—inclusive of high-tension springs and anchor pins—or securing the assembly with Spider Bolt Assemblies, using application-specific hardware is vital. From 15 x 4-inch steer drums to specialized Premier Couplers, selecting components engineered specifically for the 379 chassis ensures your rig stays out of the shop and operates with professional-grade reliability.