Raybestos 66335R Disc Brake Rotor - Rear

Overview of Raybestos R-Line Disc Brake Rotor 66335R

The Raybestos R-Line Disc Brake Rotor 66335R is engineered for reliable braking performance on select Ford, Lincoln, and Mercury vehicles. Designed specifically for models like the Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird, this vented rotor meets precise specifications to maintain optimal stopping power and durability.

• Vented disc brake rotor for improved heat dissipation
• Overall height: 1.790 inches (45.450 mm)
• Outside diameter: 10.160 inches (258.050 mm)
• Nominal thickness: 0.715 inches (18.150 mm)
• Discard thickness: 0.657 inches (16.700 mm)
• Five mounting bolt holes with a 4.250 inch (107.950 mm) bolt circle diameter
• Center hole diameter: 2.540 inches (64.500 mm)
• Conventional rotor type compatible with drum-in-hat setups

Detailed Product Description

The Raybestos R-Line 66335R rotor is a vented disc brake rotor designed to provide consistent braking performance under various driving conditions. Its vented design enhances airflow to reduce heat buildup, which helps prevent brake fade during extended use. The rotor measures 10.160 inches in outside diameter and has a nominal thickness of 0.715 inches, ensuring compatibility with the braking systems of the Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird. The discard thickness of 0.657 inches indicates the minimum allowable thickness before replacement is necessary, helping maintain safe braking operation.

This rotor features five mounting bolt holes arranged on a 4.250 inch bolt circle diameter, with a center hole diameter of 2.540 inches, matching factory specifications for the listed vehicles. The overall height of 1.790 inches supports proper fitment and alignment within the brake assembly. As a conventional rotor type, it is suitable for vehicles equipped with drum-in-hat brake configurations.

About the Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components designed to meet or exceed factory specifications. The R-Line rotors, including part number 66335R, are engineered to provide consistent performance and durability for specific vehicle applications, such as the Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird. This line emphasizes precise fitment and dependable braking characteristics for professional and DIY installations.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Restores braking efficiency on Ford Cougar, Lincoln Mark VIII, and Mercury Thunderbird
• Addresses rotor thickness below manufacturer discard limits
• Improves heat dissipation to reduce brake fade during heavy use
• Compatible with vehicles experiencing uneven brake pad wear due to rotor issues

Installation Notes and Tips

• Verify rotor dimensions and bolt pattern match vehicle specifications before installation
• Inspect brake pads and hardware for wear and replace as necessary
• Clean rotor surface with brake cleaner to remove any protective coating before installation
• Torque mounting bolts to manufacturer-recommended specifications
• Perform a bed-in procedure after installation to ensure optimal braking performance

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet strict quality standards, ensuring consistent performance and durability. While specific warranty details for part number 66335R should be confirmed with the supplier or manufacturer, Raybestos typically offers limited warranties covering defects in materials and workmanship. Proper installation and maintenance are essential to maximize the service life of the rotor.