Centric 320.66039F Disc Brake Rotor - Rear

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating provide reliable braking performance for Chevrolet and GMC vehicles. Designed specifically for models like the Blazer, Jimmy, and Sonoma, these rotors offer enhanced durability with a fully coated finish to resist corrosion and wear.

• Part Number: 320.66039F
• Fully coated disc and hat finish for corrosion resistance
• Vented rotor design with straight vane style for improved heat dissipation
• Nominal thickness of 0.787 inches (20.000 mm) and discard thickness of 0.728 inches (18.500 mm)
• Outside diameter of 11.614 inches (295.000 mm)
• Overall height of 2.874 inches (73.000 mm)
• 5 stud/lug holes with 0.516 inch (13.100 mm) diameter
• Center hole diameter of 2.783 inches (70.700 mm)
• Compatible with Chevrolet Blazer, GMC Jimmy, and Sonoma models

Product Line Details: Centric GCX Elemental Protection Disc Brake Rotors - Full Coating

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line focuses on providing rotors with a full protective coating on both the disc and hat surfaces. This coating helps prevent rust and corrosion, extending the rotor's service life and maintaining consistent braking performance. The vented rotor design with straight vanes enhances heat dissipation, reducing the risk of brake fade during extended use.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes to optimize airflow and cooling. The nominal thickness measures 0.787 inches (20.000 mm), with a discard thickness of 0.728 inches (18.500 mm), ensuring safe replacement intervals. The rotor's outside diameter is 11.614 inches (295.000 mm), and it has an overall height of 2.874 inches (73.000 mm). The rotor includes five stud/lug holes with a diameter of 0.516 inches (13.100 mm) and a center hole diameter of 2.783 inches (70.700 mm). Both the disc and hat surfaces are fully coated to resist corrosion, which is critical for vehicles exposed to harsh weather conditions.

Compatible Vehicles and Applications

• Chevrolet Blazer
• GMC Jimmy
• GMC Sonoma

This rotor is designed specifically for these models, ensuring proper fitment and optimal braking performance. It is ideal for replacing worn or damaged rotors to restore braking efficiency and safety.

Common Issues Addressed by This Rotor

• Brake rotor corrosion and rust buildup
• Reduced braking performance due to worn or warped rotors
• Brake noise caused by uneven rotor surfaces
• Overheating and brake fade during extended braking
• Vibration or pulsation felt through the brake pedal

Installation Notes and Tips

Ensure the rotor thickness is above the discard thickness of 0.728 inches (18.500 mm) before installation. Clean the hub surface to remove rust or debris for proper rotor seating. Use the correct torque specifications on the 5 lug studs to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, verify compatibility with your vehicle’s braking system. Proper bedding-in of new rotors and pads is recommended to achieve optimal braking performance.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The full coating on the disc and hat surfaces provides added protection against corrosion. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Refer to Centric’s official documentation for complete warranty information.