Centric 320.66083F Disc Brake Rotor - Rear

Reliable Disc Brake Rotor for Chevrolet and GMC Trucks

The Centric GCX Elemental Protection Disc Brake Rotor - Full Coating (part number 320.66083F) is engineered for heavy-duty performance on Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD models. Designed to meet OEM specifications, this vented rotor offers consistent braking and corrosion resistance for demanding driving conditions.

• Fully coated disc and hat finish for enhanced corrosion protection
• Vented rotor design with 47 straight vanes for improved heat dissipation
• Nominal thickness of 1.575 inches (40.000 mm) with discard thickness at 1.516 inches (38.500 mm)
• Outside diameter of 13.976 inches (355.000 mm) for precise fitment
• Eight stud/lug holes with 0.634 inch (16.100 mm) diameter for secure mounting
• Center hole diameter of 5.669 inches (144.000 mm) matching OEM specifications
• Overall height of 5.906 inches (150.000 mm) ensuring proper rotor alignment

About the Centric GCX Elemental Protection Disc Brake Rotors - Full Coating Line

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating product line focuses on providing rotors with a complete protective coating on both the disc and hat surfaces. This full coating helps prevent rust and corrosion, extending the rotor's service life and maintaining consistent braking performance. The rotors are designed to meet or exceed OEM standards, making them suitable replacements for Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD trucks requiring durable and reliable braking components.

Product Details and Specifications

This disc brake rotor features a vented design with 47 straight vanes, which enhances airflow and heat dissipation during braking. The smooth surface finish ensures even pad contact and reduces noise. With a nominal thickness of 1.575 inches (40.000 mm) and a discard thickness of 1.516 inches (38.500 mm), this rotor maintains optimal braking efficiency throughout its lifespan. The rotor's outside diameter measures 13.976 inches (355.000 mm), and it includes eight lug holes with a diameter of 0.634 inches (16.100 mm), matching the mounting requirements of the specified truck models. The hat is coated to resist corrosion, and the overall height of 5.906 inches (150.000 mm) ensures proper fitment and alignment.

Applications and Problem Solving

• Replacement for worn or warped rotors on Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD
• Addresses rotor corrosion and rust issues with full coating protection
• Improves heat dissipation to reduce brake fade during heavy towing or hauling
• Restores smooth braking performance and reduces noise caused by uneven rotor surfaces
• Compatible with vehicles requiring vented rotors with OEM vane count and dimensions

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify that the rotor thickness is above the discard thickness of 1.516 inches (38.500 mm) to maintain safety and performance. Use proper torque specifications for the eight lug nuts to secure the rotor firmly. This rotor does not include bearings or an ABS tone ring, so confirm compatibility with your vehicle's braking system. Proper bedding-in of new rotors and pads is recommended to achieve optimal braking results.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. The full coating on both the disc and hat surfaces provides enhanced corrosion resistance, contributing to longer service life. While specific warranty details are not provided here, Centric typically offers coverage against manufacturing defects. Refer to the manufacturer’s warranty documentation for complete terms and conditions.