Perfect Stop 6620543 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Cadillac and Pontiac Vehicles

The Perfect Stop Gray Armor-Plate, Premium disc brake rotor (part number 6620543) is engineered to meet the braking demands of Cadillac and Pontiac models, including the Bonneville, CTS, and STS. Designed with precision, this rotor ensures consistent performance and durability for your vehicle's braking system.

• Vented disc brake rotor design for improved heat dissipation
• Overall diameter of 12.717 inches (323.0 mm) for optimal fitment
• Nominal thickness of 1.268 inches (32.2 mm) with discard thickness at 1.209 inches (30.7 mm)
• Five mounting bolt holes with a bolt circle diameter of 4.528 inches (115.0 mm)
• Smooth surface type for consistent pad contact and braking efficiency
• Center hole diameter of 2.783 inches (70.7 mm) for precise hub alignment
• Overall height of 2.043 inches (51.9 mm) to match factory specifications

About the Gray Armor-Plate, Premium Product Line

The Gray Armor-Plate, Premium line from Perfect Stop focuses on delivering rotors with enhanced surface protection and durability. This product line features a specialized coating that helps resist corrosion and wear, extending the rotor's service life. The premium vented design also aids in maintaining optimal operating temperatures during braking, which is critical for vehicles like the Cadillac CTS and Pontiac Bonneville that require reliable stopping power under various driving conditions.

Technical Details and Specifications

This disc brake rotor is vented, allowing air to flow between the rotor surfaces to reduce heat buildup during braking. The smooth surface finish ensures even brake pad wear and consistent braking performance. With a nominal thickness of 1.268 inches (32.2 mm) and a discard thickness of 1.209 inches (30.7 mm), this rotor meets the necessary safety standards for replacement. The five mounting bolt holes and 4.528-inch bolt circle diameter provide secure attachment to the hub assembly, while the 2.783-inch center hole diameter ensures proper centering on the vehicle's axle.

Compatible Vehicles and Common Applications

• Replacement rotor for Cadillac CTS models requiring part number 6620543
• Suitable for Pontiac Bonneville brake system upgrades or repairs
• Compatible with Cadillac STS for maintaining factory braking performance
• Ideal for addressing rotor wear, scoring, or vibration issues
• Used to restore braking efficiency and reduce noise or pulsation

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. It is recommended to replace brake pads simultaneously to maintain optimal braking performance. Check the rotor thickness against discard specifications to confirm suitability. Proper torque specifications should be followed when securing the rotor to avoid warping or uneven wear.

Quality Assurance and Warranty Information

Perfect Stop disc brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The Gray Armor-Plate, Premium rotors undergo rigorous quality control to ensure durability and consistent braking performance. While specific warranty details are not provided, Perfect Stop products typically come with a limited warranty against defects in materials and workmanship.