Perfect Stop 661815 Disc Brake Rotor - Rear

Overview of Perfect Stop Gray Armor-Plate, Premium Disc Brake Rotor

The Perfect Stop Gray Armor-Plate, Premium Disc Brake Rotor (Part Number 661815) is engineered for reliable braking performance on select Ford, Lincoln, and Mercury vehicles. Designed as a solid rotor with a smooth surface, it meets the specifications required for models such as the Ford Explorer, Lincoln MKS, and Mercury Sable.

• Part Number: 661815
• Brand Line: Gray Armor-Plate, Premium
• Type: Solid Disc Brake Rotor with Smooth Surface
• Outside Diameter: 12.992 inches (330.0 mm)
• Nominal Thickness: 0.433 inches (11.0 mm)
• Discard Thickness: 0.394 inches (10.0 mm)
• Overall Height: 1.528 inches (38.8 mm)
• Mounting Bolt Hole Quantity: 5
• Mounting Bolt Hole Circle Diameter: 4.5 inches (114.3 mm)
• Center Hole Diameter: 2.677 inches (68.0 mm)
• ABS Tone Ring: Not included

Gray Armor-Plate, Premium Product Line Details

The Gray Armor-Plate, Premium line from Perfect Stop focuses on providing durable disc brake rotors with enhanced corrosion resistance and consistent braking performance. This product line features a protective gray coating that helps reduce rust and extends rotor life, making it suitable for vehicles that require dependable stopping power under various driving conditions.

Technical Specifications and Compatibility

This disc brake rotor is designed as a solid rotor with a smooth surface, ensuring even pad contact and consistent braking. The rotor measures 12.992 inches in outside diameter and has a nominal thickness of 0.433 inches, with a discard thickness of 0.394 inches, indicating when replacement is necessary. The overall height is 1.528 inches, and it includes five mounting bolt holes arranged on a 4.5-inch bolt circle diameter. The center hole diameter is 2.677 inches. This rotor does not include an ABS tone ring.

Compatible with a range of Ford, Lincoln, and Mercury models, including the Ford Edge, Explorer, Flex, Freestyle, Taurus, and Taurus X, as well as the Lincoln MKS, MKT, MKX, and Mercury Montego, Sable, and Five Hundred, this rotor meets OEM fitment requirements for these vehicles.

Common Applications and Problem Resolution

• Replacement for worn or warped rotors causing brake pulsation
• Addressing rotor thickness below manufacturer discard limits
• Resolving uneven brake pad wear due to rotor surface issues
• Improving braking performance on Ford Explorer and Lincoln MKS models
• Eliminating noise and vibration related to damaged rotors on Mercury Sable and Taurus vehicles

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify that the mounting bolt holes align correctly with the vehicle hub. Since this rotor does not include an ABS tone ring, confirm compatibility with the vehicle’s ABS system. Measure rotor thickness before installation to ensure it meets or exceeds the nominal thickness of 0.433 inches. Replace rotors when thickness reaches the discard limit of 0.394 inches.

Quality Assurance and Warranty

Perfect Stop Gray Armor-Plate, Premium rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The gray protective coating provides corrosion resistance to extend rotor life. While specific warranty details are not provided, Perfect Stop products typically undergo rigorous quality control to ensure consistent performance and durability.