Raybestos 66943R Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Ford Expedition and Lincoln Navigator

The Raybestos R-Line 66943R disc brake rotor is engineered to meet the braking demands of Ford Expedition and Lincoln Navigator models. Designed with precision, this vented rotor ensures consistent performance and durability under various driving conditions.

• Vented disc brake rotor for improved heat dissipation
• Overall height: 1.850 inches (47.000 mm)
• Outside diameter: 12.120 inches (307.850 mm)
• Mounting bolt hole quantity: 5 with 5.315 inches (135.000 mm) bolt circle diameter
• Center hole diameter: 3.638 inches (92.400 mm)
• Nominal thickness: 1.185 inches (30.100 mm)
• Discard thickness: 1.091 inches (27.700 mm)
• Conventional rotor type compatible with drum-in-hat setups

Detailed Specifications and Design Features

The Raybestos R-Line 66943R rotor features a vented design that enhances cooling efficiency, reducing the risk of brake fade during extended use. With a nominal thickness of 1.185 inches and a discard thickness of 1.091 inches, this rotor maintains structural integrity and safety throughout its service life. The 12.120-inch outside diameter and 1.850-inch overall height provide a precise fit for the braking system of Ford Expedition and Lincoln Navigator vehicles. The rotor includes five mounting bolt holes arranged on a 5.315-inch bolt circle diameter, ensuring secure installation. The center hole diameter of 3.638 inches allows for proper alignment on the hub assembly. This conventional rotor type is designed for compatibility with drum-in-hat brake configurations.

Raybestos R-Line Product Line Overview

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components for a range of vehicles. This line emphasizes durability and consistent braking performance, making it suitable for drivers who require dependable replacement parts. The 66943R rotor exemplifies the R-Line’s commitment to precision engineering and fitment accuracy for Ford and Lincoln models.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below manufacturer discard limits
• Improving heat dissipation to reduce brake fade on heavy-duty use
• Restoring proper braking performance on Ford Expedition and Lincoln Navigator
• Ensuring secure fitment with correct bolt hole pattern and dimensions

Installation Notes and Tips

When installing the Raybestos R-Line 66943R rotor, ensure the hub surface is clean and free of rust or debris to promote proper seating. Verify the rotor’s nominal thickness and discard thickness to confirm suitability for replacement. Use the correct torque specifications for the five mounting bolts to avoid rotor warping. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards, providing consistent quality and reliability. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. This rotor is designed to deliver dependable braking performance for Ford Expedition and Lincoln Navigator vehicles when installed and maintained properly.