Centric 320.66044F 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 heavy-duty Chevrolet and GMC trucks and vans. Designed with a fully coated finish, these rotors offer enhanced corrosion resistance and durability for vehicles like the Silverado 2500 HD and Sierra 3500 HD.

• Part Number: 320.66044F
• Fully coated disc and hat finish for corrosion protection
• Vented rotor design for improved heat dissipation
• Nominal thickness of 1.142 inches (29.000 mm)
• Outside diameter of 12.992 inches (330.000 mm)
• Compatible with Chevrolet and GMC heavy-duty models
• 8 stud/lug holes with 0.650 inch (16.500 mm) diameter

Product Line Details: Centric GCX Elemental Protection

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating 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 rotor life and maintaining consistent braking performance. The vented rotor design enhances cooling efficiency, which is critical for heavy-duty applications such as the Chevrolet Silverado 3500 and GMC Sierra 2500 HD Classic.

Technical Specifications and Features

This disc brake rotor features a nominal thickness of 1.142 inches (29.000 mm) and a discard thickness of 1.063 inches (27.000 mm), ensuring a long service life before replacement is necessary. The rotor’s outside diameter measures 12.992 inches (330.000 mm), with an overall height of 3.673 inches (93.300 mm). It includes 8 stud/lug holes with a diameter of 0.650 inches (16.500 mm) arranged on a 6.500 inch (165.100 mm) bolt circle diameter. The rotor is vented with straight vanes to optimize heat dissipation during braking. The smooth surface finish and floating/dih disc mounting type contribute to consistent brake pad contact and performance.

Compatible Vehicles and Applications

• Chevrolet Avalanche 2500
• Chevrolet Express 2500 and 3500
• Chevrolet Suburban 2500
• Chevrolet Silverado 1500, 2500, 2500 HD, 2500 HD Classic, 3500, 3500 Classic, 3500 HD
• GMC Sierra 1500, 2500, 2500 HD, 2500 HD Classic, 3500, 3500 Classic, 3500 HD
• GMC Savana 2500 and 3500
• GMC Yukon XL 2500

Common Issues Addressed by This Rotor

• Brake rotor corrosion and rust buildup
• Overheating and brake fade during heavy 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

Installation Notes and Tips

Ensure the rotor discard thickness of 1.063 inches (27.000 mm) is not exceeded before installation. Clean the hub surface thoroughly to prevent uneven rotor mounting. Use proper torque specifications for the 8 lug nuts on the 6.500 inch bolt circle diameter. The fully coated finish should be handled carefully to avoid damaging the protective layer. This rotor does not include bearings or an ABS tone ring, so verify compatibility with your vehicle’s braking system.

Quality Assurance and Warranty

Centric rotors undergo rigorous quality control to meet OEM standards for fit, finish, and performance. The full coating on both the disc and hat surfaces provides extended corrosion resistance. 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.