Centric 320.66077F 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. Designed specifically for models like the Silverado 2500 HD and Sierra 3500 HD, these rotors offer durability and corrosion resistance through a full coating finish.

• Part Number: 320.66077F
• Fully coated disc and hat finish for enhanced corrosion protection
• Vented rotor design with straight vane style for improved heat dissipation
• Nominal thickness of 1.343 inches (34.100 mm) with discard thickness at 1.280 inches (32.500 mm)
• Outside diameter of 14.173 inches (360.000 mm) suitable for heavy-duty applications
• Eight stud/lug holes with 0.638 inch (16.200 mm) diameter for secure mounting
• Compatible with Chevrolet and GMC heavy-duty trucks including Silverado and Sierra 2500/3500 HD series

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

The Centric GCX Elemental Protection line focuses on providing rotors with a full coating that protects against rust and corrosion, extending the service life of the brake components. This full coating covers both the disc surface and the hat, which is critical for vehicles exposed to harsh environments or heavy-duty use. The 320.66077F rotor is part of this line, engineered to maintain structural integrity and consistent braking performance for Chevrolet and GMC heavy-duty trucks.

Technical Specifications and Features

This vented disc brake rotor features a smooth surface type and straight vane style to optimize airflow and cooling during braking. The rotor’s overall height measures 4.693 inches (119.200 mm), with a center hole diameter of 5.000 inches (127.000 mm) and a mounting bolt hole circle diameter of 7.087 inches (180.000 mm). Weighing approximately 37.25 lbs (16.9 kgs), it is designed for durability without excessive weight. The rotor does not include ABS tone rings or bearings, and it mounts using a floating/dih disc mounting style.

Compatible Vehicles and Applications

• Chevrolet Silverado 2500 and 2500 HD
• Chevrolet Silverado 3500 and 3500 HD
• Chevrolet Suburban 3500 HD
• GMC Sierra 2500 HD and 3500 HD

Common Issues Addressed by This Rotor

• Brake rotor corrosion and rust buildup
• Overheating and brake fade during heavy-duty use
• Warped or uneven rotor surfaces causing vibration
• Reduced braking efficiency due to worn or thin rotors
• Compatibility issues with heavy-duty Chevrolet and GMC trucks

Installation Notes and Tips

• Ensure rotor discard thickness of 1.280 inches (32.500 mm) is not exceeded before replacement
• Verify mounting bolt hole circle diameter and stud/lug hole quantity for proper fitment
• Clean hub surface before installation to prevent rotor runout
• Use proper torque specifications for lug nuts to avoid rotor damage
• Check for compatibility with vehicle ABS systems as this rotor does not include an ABS tone ring

Quality Assurance and Warranty

Centric rotors are manufactured to meet or exceed OEM specifications for fit, form, and function. The full coating process enhances corrosion resistance, contributing to longer rotor life. While specific warranty details are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or manufacturer resources for exact warranty terms.