Raybestos 56128R Disc Brake Rotor and Hub Assembly - Front

Overview of Raybestos R-Line Disc Brake Rotor and Hub Assembly

The Raybestos R-Line 56128R disc brake rotor and hub assembly is engineered for reliable braking performance on select Buick, Cadillac, Chevrolet, and Oldsmobile vehicles. Designed to meet OEM specifications, this assembly ensures proper fit and function for models such as the Caprice, Fleetwood, and Impala.

• Includes integrated disc brake rotor and hub assembly
• Nominal thickness: 1.035 inches (26.300 mm)
• Discard thickness: 0.965 inches (24.500 mm)
• Five mounting bolt holes with 5.000 inch (127.000 mm) bolt circle diameter
• Mounting bolt hole diameter: 0.488 inches (12.400 mm)
• Five stud/lug holes for secure wheel attachment

Detailed Specifications and Features

This Raybestos R-Line 56128R rotor and hub assembly features a nominal thickness of 1.035 inches (26.300 mm), providing a durable braking surface that meets the required standards for disc brake rotors. The discard thickness is set at 0.965 inches (24.500 mm), indicating the minimum thickness before replacement is necessary to maintain safe braking performance. The assembly includes five mounting bolt holes arranged on a 5.000 inch (127.000 mm) bolt circle diameter, with each hole measuring 0.488 inches (12.400 mm) in diameter. This configuration is compatible with vehicles requiring a five-lug stud pattern, ensuring proper fitment and secure installation.

Compatible Vehicles and Applications

This part number 56128R is compatible with a range of GM vehicles, including Buick 60 Special, Cadillac Brougham, Chevrolet Caprice, Commercial Chassis, Custom Cruiser, Fleetwood, Impala, and Oldsmobile Roadmaster. It is designed specifically for models that require a five-lug bolt pattern and the specified rotor dimensions, making it suitable for restoration or maintenance of these classic and full-size vehicles.

Raybestos R-Line Product Line Information

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components for a variety of vehicle applications. This line emphasizes precise fitment and consistent performance, making it a practical choice for technicians and vehicle owners seeking dependable replacement parts. The 56128R rotor and hub assembly exemplifies the R-Line's commitment to meeting factory specifications without unnecessary modifications.

Common Issues Addressed by This Assembly

• Worn or warped brake rotors causing vibration or noise
• Damaged or corroded hub assemblies affecting wheel alignment
• Brake pulsation due to uneven rotor thickness
• Loose or damaged mounting bolt holes compromising safety
• Incompatibility with factory lug patterns leading to installation issues

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting bolt hole pattern and rotor dimensions match the vehicle specifications. Clean the hub mounting surface to remove rust or debris for proper rotor seating. Torque all mounting bolts to manufacturer specifications to avoid warping or loosening. It is recommended to inspect wheel bearings and replace if necessary during installation.

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet or exceed OEM standards, providing consistent performance and durability. While specific warranty details for part number 56128R should be confirmed with the supplier, Raybestos typically offers limited warranties covering defects in materials and workmanship. Proper installation and maintenance are essential to ensure the longevity and safety of the brake assembly.