Raybestos 66786 Disc Brake Rotor and Hub Assembly - Front

Overview of Raybestos 66786 Disc Brake Rotor and Hub Assembly

The Raybestos Specialty - Truck Disc Brake Rotor and Hub Assembly, part number 66786, is engineered for reliable braking performance on Ford F-250 Super Duty and F-350 Super Duty trucks. Designed to meet specific fitment requirements, this assembly ensures proper compatibility and durability 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 fitment
• 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 Description and Specifications

This Raybestos disc brake rotor and hub assembly (part number 66786) is designed specifically for Ford F-250 Super Duty and F-350 Super Duty trucks, providing a precise fit with its 8 mounting bolt holes arranged on a 170 mm (6.693 inch) bolt circle diameter. The rotor features a nominal thickness of 38.000 mm (1.496 inches) and a discard thickness of 36.000 mm (1.417 inches), ensuring safe and effective braking performance throughout its service life. The mounting bolt hole diameter measures 15.3 mm (0.603 inches), accommodating the vehicle’s lug hardware for secure installation. The assembly includes 8 stud/lug holes, matching the wheel configuration of the specified Ford models.

The Specialty - Truck product line from Raybestos focuses on components tailored for heavy-duty truck applications, emphasizing durability and fitment precision. This line is engineered to meet the demands of commercial and work trucks, providing reliable braking components that maintain performance under rigorous conditions. The 66786 assembly is part of this line, offering a factory-style replacement that aligns with the specifications required by Ford Super Duty trucks.

Common Applications and Problem Solving

• Replacement for worn or warped disc brake rotors on Ford F-250 and F-350 Super Duty trucks
• Addresses brake pulsation or vibration issues caused by uneven rotor surfaces
• Restores proper wheel hub alignment and mounting integrity
• Solves noise or squealing related to rotor wear or damage
• Prevents brake fade by maintaining correct rotor thickness and heat dissipation

Installation Notes and Tips

• Verify vehicle compatibility with Ford F-250 Super Duty or F-350 Super Duty before installation
• Inspect mounting bolts and studs for wear or damage and replace if necessary
• Ensure rotor thickness meets nominal specifications; do not install if below discard thickness
• Use proper torque specifications for mounting bolts to avoid warping
• Clean hub surface before installation to ensure proper seating and prevent vibration

Quality Assurance and Warranty

Raybestos Specialty - Truck brake components are manufactured to meet or exceed OEM standards for fit, form, and function. The 66786 disc brake rotor and hub assembly undergoes rigorous quality control to ensure durability and performance under heavy-duty conditions. Warranty coverage details should be confirmed with the product documentation or authorized Raybestos distributors.