Raybestos 66786R Disc Brake Rotor and Hub Assembly - Front

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

The Raybestos R-Line 66786R disc brake rotor and hub assembly is engineered for reliable braking performance on Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to meet precise specifications, this assembly ensures proper fitment and consistent operation for heavy-duty applications.

• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• Includes disc brake rotor and hub assembly in one unit
• Mounting bolt hole quantity: 8 for secure installation
• Mounting bolt hole circle diameter: 170 mm (6.693 inches)
• Mounting bolt hole diameter: 15.3 mm (0.603 inches)
• Nominal rotor thickness: 38.000 mm (1.496 inches)
• Discard rotor thickness: 36.000 mm (1.417 inches)
• Stud/lug hole quantity: 8 for proper wheel alignment

Detailed Product Specifications

The Raybestos R-Line 66786R rotor and hub assembly features a nominal thickness of 38.000 mm (1.496 inches), providing a solid braking surface designed to withstand the demands of heavy-duty Ford trucks. The discard thickness is set at 36.000 mm (1.417 inches), indicating the minimum safe thickness before replacement is necessary. This assembly includes eight mounting bolt holes arranged on a 170 mm (6.693 inch) bolt circle diameter, with each hole measuring 15.3 mm (0.603 inches) in diameter. The eight stud/lug holes ensure proper wheel fitment and secure attachment.

About the Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on delivering dependable brake components tailored for specific vehicle applications. This line emphasizes precise fitment and consistent performance, making it suitable for demanding environments such as those encountered by Ford Super Duty trucks. The 66786R assembly reflects the R-Line’s commitment to quality and durability in brake system components.

Common Applications and Problem Solving

• Replacement of worn or warped rotors on Ford F-250 Super Duty and F-350 Super Duty
• Addressing brake pulsation or vibration issues caused by uneven rotor surfaces
• Resolving noise or squealing related to rotor wear or damage
• Ensuring proper wheel alignment and secure mounting with correct bolt hole configuration
• Maintaining braking efficiency under heavy load conditions

Installation Notes and Tips

When installing the Raybestos R-Line 66786R rotor and hub assembly, verify the bolt hole pattern and stud count to match your Ford F-250 or F-350 Super Duty. Ensure the mounting surfaces are clean and free of debris before installation. Torque all mounting bolts to manufacturer specifications to maintain proper assembly integrity. It is recommended to inspect the brake pads and related hardware during installation for optimal braking performance.

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet or exceed OEM standards for fit, form, and function. The 66786R disc brake rotor and hub assembly undergoes rigorous quality control to ensure durability and reliability. Please refer to Raybestos or authorized distributors for specific warranty details related to this part number.