Perfect Stop 662747 Disc Brake Rotor - Front

Overview of Perfect Stop Gray Armor-Plate Premium Rotor

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (Part Number 662747) is engineered for reliable braking performance on select Saab and Saturn vehicles. Designed to meet precise specifications, this vented rotor supports consistent heat dissipation and smooth braking response.

• Compatible with Saab 9-3, 9-5, and 900 models
• Fits Saturn L100, L200, L300, LS, LS1, LS2, LW1, LW2, LW200, and LW300
• Vented disc brake rotor with smooth surface finish
• Outside diameter: 11.339 inches (288.0 mm)
• Nominal thickness: 0.984 inches (25.0 mm); discard thickness: 0.906 inches (23.0 mm)
• Overall height: 1.654 inches (42.0 mm)
• Mounting bolt hole quantity: 5 with 4.331 inches (110.0 mm) bolt circle diameter
• Center hole diameter: 2.764 inches (70.2 mm)
• ABS tone ring not included

Gray Armor-Plate, Premium Product Line Details

The Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering durable disc brake rotors with enhanced surface protection and structural integrity. This product line emphasizes vented rotor designs to improve heat dissipation during braking, reducing the risk of warping and maintaining consistent stopping power. The smooth surface finish supports even pad wear and quiet operation, making it suitable for daily driving conditions on compatible Saab and Saturn models.

Technical Specifications and Features

This disc brake rotor features a vented design that allows air to flow between the rotor surfaces, effectively dissipating heat generated during braking. The nominal thickness of 0.984 inches (25.0 mm) ensures sufficient material for durability, while the discard thickness of 0.906 inches (23.0 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s outside diameter of 11.339 inches (288.0 mm) and overall height of 1.654 inches (42.0 mm) are engineered to match factory specifications for the listed Saab and Saturn vehicles. The 5-bolt mounting pattern with a 4.331-inch (110.0 mm) bolt circle diameter and a center hole diameter of 2.764 inches (70.2 mm) ensures proper fitment and secure installation.

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
• Improving heat dissipation to prevent brake fade during extended use
• Eliminating noise and vibration from uneven rotor surfaces
• Restoring proper rotor dimensions for safe and reliable braking on Saab 9-3, 9-5, 900 and Saturn L-series models

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust or debris before installation. Verify the rotor thickness is above the discard thickness specification of 0.906 inches (23.0 mm). Use the correct torque specifications for the 5 mounting bolts to avoid rotor distortion. Since this rotor does not include an ABS tone ring, confirm compatibility with your vehicle’s ABS system. It is recommended to replace brake pads simultaneously to maintain optimal braking performance.

Quality Assurance and Warranty

Perfect Stop Gray Armor-Plate, Premium rotors are manufactured to meet or exceed OEM standards for fit, form, and function. While specific warranty details are not provided, these rotors undergo quality control processes to ensure durability and consistent braking performance on compatible Saab and Saturn vehicles. Always consult vehicle service manuals for proper maintenance and replacement intervals.