Raybestos 66559R Disc Brake Rotor and Hub Assembly - Front

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

The Raybestos R-Line 66559R disc brake rotor and hub assembly is engineered for reliable braking performance on select Ford and Mazda trucks. Designed specifically for models like the Ford Ranger and Mazda B-series trucks, this assembly ensures precise fitment and consistent stopping power.

• Compatible with Ford Ranger, Mazda B2300, B3000, and B4000 models
• Part number 66559R for accurate identification
• Includes disc brake rotor and hub assembly in one unit
• Mounting bolt hole quantity: 5 with 114.3 mm bolt circle diameter
• Nominal rotor thickness: 1.025 inches (26.05 mm)
• Discard thickness: 0.965 inches (24.5 mm)
• Mounting bolt hole diameter: 0.54 inches (13.7 mm)
• Stud/lug hole quantity: 5

Detailed Specifications and Features

This disc brake rotor and hub assembly features a nominal thickness of 1.025 inches (26.05 mm), providing a solid braking surface for effective heat dissipation and durability. The discard thickness is set at 0.965 inches (24.5 mm), indicating the minimum safe thickness before replacement is necessary. The assembly includes five mounting bolt holes arranged on a 114.3 mm bolt circle diameter, with each hole measuring 0.54 inches (13.7 mm) in diameter, ensuring secure attachment to the vehicle hub. The five stud/lug holes accommodate standard wheel configurations for the specified Ford and Mazda models.

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 replacement parts on trucks like the Ford Ranger and Mazda B-series. The 66559R rotor and hub assembly exemplifies the R-Line's commitment to quality and compatibility within its category.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing excessive rotor thickness wear beyond discard limits
• Resolving hub assembly issues affecting wheel alignment or vibration
• Upgrading brake components for improved stopping consistency on Ford Ranger and Mazda B-series trucks
• Fixing mounting bolt hole damage or corrosion impacting rotor stability

Installation Notes and Tips

Ensure the vehicle is securely lifted and supported before beginning installation. Verify that the mounting bolt holes and stud/lug holes align correctly with the vehicle hub. Measure rotor thickness to confirm replacement necessity, comparing to the discard thickness of 0.965 inches (24.5 mm). Use proper torque specifications for mounting bolts to avoid warping or loosening. It is recommended to inspect related brake components such as pads and calipers during installation.

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet or exceed OEM standards for fit and function. The 66559R disc brake rotor and hub assembly undergoes rigorous quality control to ensure durability and performance. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary by region and application.