Raybestos 66744R Disc Brake Rotor - Front

Overview of Raybestos R-Line Disc Brake Rotor 66744R

The Raybestos R-Line Disc Brake Rotor 66744R is engineered for reliable braking performance on Ford, Lincoln, and Mercury vehicles. Designed specifically for models like the Crown Victoria, Grand Marquis, and Town Car, this vented rotor meets precise specifications to ensure proper fit and function.

• Vented disc brake rotor for improved heat dissipation
• Overall height: 2.590 inches (65.800 mm)
• Outside diameter: 12.440 inches (316.000 mm)
• Nominal thickness: 1.105 inches (28.050 mm)
• Discard thickness: 1.014 inches (25.750 mm)
• 5 mounting bolt holes with 0.595 inch (15.100 mm) diameter
• Center hole diameter: 2.826 inches (71.800 mm)
• Conventional rotor type compatible with drum-in-hat setups

Raybestos R-Line Product Line Details

The R-Line by Raybestos focuses on delivering dependable brake components that meet OEM specifications. This product line emphasizes durability and consistent performance, making it suitable for vehicles requiring precise rotor dimensions and vented designs. The 66744R rotor exemplifies the R-Line’s commitment to quality and fitment accuracy for Ford, Lincoln, and Mercury models.

Technical Description and Specifications

This disc brake rotor features a vented design to enhance cooling during braking, reducing the risk of brake fade. The nominal thickness of 1.105 inches (28.050 mm) ensures structural integrity, while the discard thickness of 1.014 inches (25.750 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height of 2.590 inches (65.800 mm) and outside diameter of 12.440 inches (316.000 mm) are engineered to match the brake system requirements of the Crown Victoria, Grand Marquis, and Town Car. The 5 mounting bolt holes and stud/lug hole quantity of 5 provide secure attachment to the hub assembly.

Applications and Problem Solving

• Replacement for worn or warped rotors on Ford Crown Victoria, Lincoln Town Car, and Mercury Grand Marquis
• Addresses brake pulsation caused by uneven rotor thickness
• Improves heat dissipation to reduce brake fade during extended use
• Restores proper rotor thickness for consistent braking performance
• Compatible with conventional drum-in-hat brake systems requiring vented rotors

Installation Notes and Tips

• Verify rotor dimensions against vehicle specifications before installation
• Ensure mounting surfaces are clean and free of debris for proper fit
• Torque mounting bolts to manufacturer-recommended specifications
• Inspect brake pads and hardware during rotor replacement for optimal performance
• Check rotor thickness regularly to avoid discarding below 1.014 inches (25.750 mm)

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards, ensuring reliable braking performance. The 66744R rotor undergoes rigorous quality control to maintain dimensional accuracy and material integrity. Warranty coverage details should be confirmed with the product documentation or manufacturer.