Raybestos 66558R Disc Brake Rotor and Hub Assembly - Front

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

The Raybestos R-Line 66558R disc brake rotor and hub assembly is engineered for reliable braking performance on select Ford and Mazda trucks. Designed to meet precise specifications, this part ensures proper fitment and durability for models like the Ford Ranger and Mazda B2300.

• Compatible with Ford B2300, B3000, B4000, F-100 Ranger, and Ranger models
• Includes disc brake rotor and hub assembly in one unit
• Mounting bolt hole quantity: 5 with a 114.3 mm bolt circle diameter
• Nominal rotor thickness: 1.025 inches (26.05 mm)
• Discard thickness: 0.964 inches (24.5 mm)
• Mounting bolt hole diameter: 0.54 inches (13.7 mm)
• Stud/lug hole quantity: 5

Detailed Product Specifications

The Raybestos R-Line 66558R rotor and hub assembly features a nominal thickness of 1.025 inches (26.05 mm), providing a solid braking surface for consistent stopping power. The discard thickness is set at 0.964 inches (24.5 mm), indicating the minimum safe thickness before replacement is necessary. This 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. The five stud/lug holes ensure secure attachment to the vehicle’s wheel hub. These precise measurements guarantee compatibility with specific Ford and Mazda truck models, including the B2300, B3000, B4000, F-100 Ranger, and Ranger.

About the Raybestos R-Line Product Line

The R-Line from Raybestos is a product line focused on delivering reliable, OE-quality brake components designed for direct replacement applications. This line emphasizes exact fitment and consistent performance, making it suitable for vehicles requiring dependable braking parts without modification. The 66558R rotor and hub assembly exemplifies the R-Line’s commitment to quality and precision for Ford and Mazda trucks.

Common Applications and Problem Solving

• Replacement for worn or warped disc brake rotors on Ford Ranger and Mazda B-series trucks
• Addresses issues with brake pulsation or vibration during stopping
• Resolves hub assembly wear that can cause wheel misalignment or noise
• Restores proper mounting bolt alignment and secure wheel attachment
• Prevents brake fade caused by rotor thickness below discard limits

Installation Notes and Tips

• Verify vehicle compatibility with Ford B2300, B3000, B4000, F-100 Ranger, or Ranger models before installation
• Ensure mounting surfaces are clean and free of debris for proper fitment
• Torque mounting bolts to manufacturer specifications to avoid warping
• Inspect wheel studs and lug nuts for wear during installation
• Check rotor thickness with a micrometer to confirm it meets nominal thickness standards

Quality Assurance and Warranty

Raybestos R-Line brake components are manufactured to meet or exceed OEM standards, ensuring consistent performance and durability. The 66558R disc brake rotor and hub assembly undergoes rigorous quality control to maintain precise dimensions and material integrity. Warranty coverage details should be confirmed with the point of purchase or Raybestos directly, as they may vary by region and application.