Raybestos 66943FZN Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Ford Expedition and Lincoln Navigator

The Raybestos Element3; Coated Rotor 66943FZN is engineered to provide consistent braking performance for Ford Expedition and Lincoln Navigator models. Designed as a vented disc brake rotor, it offers effective heat dissipation and durability for demanding driving conditions.

• Vented disc brake rotor design for improved cooling
• Overall height: 1.850 inches (47.000 mm)
• Outside diameter: 12.120 inches (307.850 mm)
• Mounting bolt hole quantity: 5 with 5.315 inch (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 Product Description

This Raybestos disc brake rotor, part number 66943FZN, is specifically designed for use on Ford Expedition and Lincoln Navigator vehicles. The rotor features a vented design that enhances heat dissipation during braking, reducing the risk of brake fade under heavy use. With an outside diameter of 12.120 inches and a nominal thickness of 1.185 inches, it meets OEM specifications for reliable fit and function. 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 proper alignment on the hub. The discard thickness of 1.091 inches indicates the minimum safe thickness before replacement is necessary, helping maintain braking safety.

About the Element3; Coated Rotor Product Line

The Element3; Coated Rotor line from Raybestos is designed to provide enhanced corrosion resistance and long-lasting performance. The coating helps protect the rotor surface from rust and environmental damage, which is particularly beneficial for vehicles like the Ford Expedition and Lincoln Navigator that may be exposed to varied driving conditions. This product line balances durability with consistent braking performance, making it suitable for both daily driving and more demanding applications.

Common Applications and Issues Addressed

• Replacement for worn or warped rotors causing brake pulsation
• Upgrading corroded rotors to improve braking response
• Resolving excessive brake noise due to rotor surface damage
• Maintaining proper rotor thickness to ensure safe braking performance
• Addressing overheating issues with vented rotor design

Installation Notes and Tips

• Verify rotor thickness before installation to ensure it meets minimum discard thickness
• Clean mounting surfaces to prevent rotor runout and vibration
• Torque mounting bolts to manufacturer specifications for secure fitment
• Inspect brake pads and replace if worn to optimize rotor performance
• Break in new rotors with proper bedding procedure to ensure consistent braking

Quality Assurance and Warranty

Raybestos disc brake rotors, including part number 66943FZN, are manufactured to meet or exceed OEM standards for fit, form, and function. The Element3; Coated Rotor line includes protective coatings to extend rotor life and resist corrosion. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship to provide confidence in product reliability.