Raybestos 66238R Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Ford Crown Victoria and Lincoln Town Car

The Raybestos R-Line 66238R disc brake rotor is engineered to meet the braking demands of Ford, Lincoln, and Mercury vehicles. Designed specifically for models like the Crown Victoria, Grand Marquis, LTD Crown Victoria, and Town Car, this rotor ensures consistent performance and durability.

• Vented disc brake rotor with drum-in-hat design for enhanced heat dissipation
• Outside diameter of 11.415 inches (289.95 mm) for precise fitment
• Nominal thickness of 0.500 inches (12.7 mm) with discard thickness at 0.443 inches (11.25 mm)
• Overall height of 2.310 inches (58.65 mm) to match OEM specifications
• Five mounting bolt holes with a 4.5-inch (114.3 mm) bolt circle diameter
• Center hole diameter of 2.782 inches (70.65 mm) for secure hub alignment

Detailed Specifications and Design Features

This Raybestos R-Line rotor (part number 66238R) features a vented design that improves heat dissipation during braking, reducing the risk of brake fade under heavy use. The drum-in-hat configuration integrates a parking brake drum within the rotor, making it compatible with vehicles equipped with drum parking brakes. The rotor’s precise dimensions, including a 5-bolt mounting pattern and exact center hole diameter, ensure a direct fit for Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, and LTD Crown Victoria models.

About the Raybestos R-Line Product Line

The R-Line by Raybestos is a product line focused on delivering reliable, OEM-quality brake components for domestic vehicles. This line balances performance and durability, providing rotors that meet factory specifications without unnecessary features. The 66238R rotor exemplifies the R-Line’s commitment to fitment accuracy and consistent braking performance for Ford, Lincoln, and Mercury vehicles.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Addressing reduced braking efficiency due to rotor thickness below discard limits
• Resolving noise or vibration issues linked to uneven rotor surfaces
• Upgrading to a vented rotor for improved heat management in daily driving
• Ensuring compatibility with drum-in-hat parking brake systems on specified models

Installation Notes and Tips

• Verify rotor thickness before installation; discard if below 0.443 inches (11.25 mm)
• Ensure mounting surfaces and hub are clean to prevent rotor runout
• Torque mounting bolts to manufacturer specifications for secure fitment
• Check parking brake components for wear when replacing drum-in-hat rotors
• Perform a bed-in procedure after installation to optimize braking performance

Quality Assurance and Warranty

Raybestos R-Line rotors are manufactured to meet or exceed OEM standards, ensuring reliable braking performance. While specific warranty details may vary, Raybestos typically offers coverage against defects in materials and workmanship. Using the 66238R rotor helps maintain the safety and integrity of your braking system on Ford Crown Victoria, Lincoln Town Car, Mercury Grand Marquis, and LTD Crown Victoria vehicles.