Raybestos 66821 Disc Brake Rotor and Hub Assembly - Front

Overview of Raybestos 66821 Disc Brake Rotor and Hub Assembly

The Raybestos Specialty - Truck 66821 disc brake rotor and hub assembly is engineered for reliable braking performance on Ford trucks. Designed specifically for Ford F-150 and F-250 models, this assembly ensures precise fitment and consistent operation under demanding conditions.

• Compatible with Ford F-150 and F-250 models
• Includes disc brake rotor and hub assembly
• Mounting bolt hole quantity: 5 with 0.563 inch diameter
• Mounting bolt hole circle diameter: 5.315 inches (135.000 mm)
• Nominal rotor thickness: 1.030 inches (26.150 mm)
• Discard rotor thickness: 0.972 inches (24.700 mm)
• Stud/lug hole quantity: 5

Detailed Product Description and Specifications

The Raybestos 66821 disc brake rotor and hub assembly is part of the Specialty - Truck product line, which focuses on components tailored for truck applications requiring durability and precise engineering. This assembly features a nominal rotor thickness of 1.030 inches (26.150 mm), providing a solid braking surface, while the discard thickness is set at 0.972 inches (24.700 mm), indicating the minimum safe thickness before replacement is necessary. The assembly includes five mounting bolt holes with a diameter of 0.563 inches (14.300 mm) arranged on a 5.315-inch (135.000 mm) bolt circle diameter, ensuring secure attachment to the vehicle hub. The five stud/lug holes correspond to the wheel mounting points, matching the specifications of Ford F-150 and F-250 trucks.

Applications and Problem Solving

• Replacement for worn or warped disc brake rotors on Ford F-150 and F-250
• Addresses brake pulsation caused by uneven rotor thickness
• Restores proper hub alignment and wheel mounting integrity
• Solves issues related to rotor thickness below manufacturer discard limits
• Improves braking consistency and safety on heavy-duty trucks

Installation Notes and Tips

• Verify compatibility with your specific Ford F-150 or F-250 model year before installation
• Ensure mounting surfaces are clean and free of debris for proper fitment
• Torque mounting bolts to manufacturer specifications to avoid rotor warping
• Inspect wheel studs and lug nuts for wear during installation
• Check rotor thickness with a micrometer to confirm it meets nominal specifications

Quality Assurance and Warranty

Raybestos Specialty - Truck brake components are manufactured to meet or exceed OEM standards for durability and performance. The 66821 disc brake rotor and hub assembly undergoes rigorous quality control to ensure consistent thickness and precise bolt hole alignment. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Consult product documentation or authorized sources for exact warranty terms.