Centric 320.66059F Disc Brake Rotor - Front

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating provide reliable braking performance for heavy-duty Chevrolet and GMC trucks and vans. Designed with a fully coated disc and hat finish, these rotors offer enhanced corrosion resistance and durability for demanding driving conditions.

• Part Number: 320.66059F
• Fully coated disc and hat finish for corrosion protection
• Vented rotor design with straight vane style for improved heat dissipation
• Nominal thickness: 1.488 inches (37.8 mm); discard thickness: 1.437 inches (36.5 mm)
• Outside diameter: 12.78 inches (324.6 mm)
• Floating disc mounting with 8 lug holes (0.646 inch diameter)
• Compatible with Chevrolet and GMC heavy-duty models

Product Line Details: Centric GCX Elemental Protection

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line focuses on providing rotors with a full protective coating to resist rust and corrosion. This coating extends the rotor's service life, especially in environments exposed to moisture and road salts. The GCX line is engineered to meet or exceed OEM specifications, making it suitable for heavy-duty applications such as Chevrolet Silverado 2500 HD and GMC Sierra 3500 models.

Technical Specifications and Features

This disc brake rotor features a vented design with straight vanes to optimize airflow and heat dissipation during braking. The rotor has a nominal thickness of 1.488 inches (37.8 mm) and a discard thickness of 1.437 inches (36.5 mm), ensuring safe and effective braking performance throughout its lifespan. The overall height measures 3.516 inches (89.3 mm), and the outside diameter is 12.78 inches (324.6 mm). The rotor includes 8 stud/lug holes with a diameter of 0.646 inches (16.4 mm) and a mounting bolt hole circle diameter of 6.5 inches (165.1 mm). The floating disc mounting system allows for slight movement to reduce stress and improve rotor longevity.

Compatible Vehicles and Applications

• Chevrolet Avalanche 2500
• Chevrolet Express 2500 and 3500
• Chevrolet Silverado 2500 HD, 2500 HD Classic, 3500, 3500 Classic, and 3500 HD
• GMC Savana 2500 and 3500
• GMC Sierra 2500 HD, 2500 HD Classic, 3500, 3500 Classic, and 3500 HD

Common Issues Addressed by This Rotor

• Corrosion and rust buildup on brake rotors
• Overheating and brake fade during heavy-duty use
• Uneven rotor wear causing vibration or noise
• Reduced braking efficiency due to worn or thin rotors
• Compatibility issues with heavy-duty Chevrolet and GMC trucks and vans

Installation Notes and Tips

Ensure the rotor surface is clean and free of debris before installation. Verify the rotor thickness is above the discard thickness of 1.437 inches (36.5 mm) to maintain safe braking performance. Use proper torque specifications for the 8 lug nuts and mounting bolts. The floating disc mounting requires correct alignment to prevent uneven wear. ABS tone ring is not included with this rotor, so verify compatibility with your vehicle's ABS system if applicable.

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM standards for fit, form, and function. 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 defects in materials and workmanship. Always consult the product packaging or manufacturer for exact warranty terms.