Peterbilt 389 Glider Disc Brake Parts

Frequently Asked Questions About Peterbilt 389 Glider Disc Brake Parts

Will these disc brake parts fit my Peterbilt 389 glider kit?

Peterbilt 389 glider kits were built over several years with different axle and brake configurations, so fitment can vary depending on your specific chassis setup, axle manufacturer, and whether your truck was originally equipped with disc or drum brakes. Before ordering, check your axle specs and existing brake components, or contact our parts team with your VIN or build sheet so we can confirm the correct rotors, calipers, or mounting hardware for your truck.

What is included when I order a disc brake component, and what will I still need?

Depending on the specific part number, you may receive just the individual component, such as a rotor, caliper, or hub assembly, rather than a complete kit. Mounting hardware, brake pads, and sensors are sometimes sold separately. Review the product listing carefully or reach out to us to confirm exactly what is included so you can order any additional parts needed for a complete installation.

Are these parts OEM, aftermarket, or reconditioned?

Our inventory includes a mix of OEM and quality aftermarket disc brake components. Each product listing specifies the brand and part origin, so you can compare against your original equipment before purchasing. If you have a preference for OEM matching or need help identifying the original manufacturer of your current brake system, our team can assist.

Do I need professional installation for disc brake parts, or can I install them myself?

Brake system components are safety critical, and installation typically requires proper torque specs, alignment, and bleeding or bedding procedures depending on the part. While experienced diesel technicians and shop owners often handle these installs themselves, we recommend having the work done or verified by a qualified technician to ensure the brakes perform correctly and meet safety standards.

Do these disc brake parts meet DOT and FMVSS safety standards?

Most disc brake components sold for on-highway use are manufactured to meet applicable DOT and FMVSS 121 requirements, but compliance can depend on the specific part and how it is installed as part of the complete brake system. Check the product listing for certification details, and consult your technician to confirm the finished installation meets all applicable regulations for your state and application.