Centric 320.66031F Disc Brake Rotor - Front

Overview of Centric GCX Elemental Protection Disc Brake Rotors

The Centric GCX Elemental Protection Disc Brake Rotor (Part Number 320.66031F) is engineered for reliable braking performance on Chevrolet and GMC P30 and P3500 models. Featuring a full coating, this rotor offers enhanced corrosion resistance and durability for demanding driving conditions.

• Fully coated disc and hat finish for superior rust protection
• Vented rotor design with straight vanes for efficient heat dissipation
• Nominal thickness of 1.437 inches (36.5 mm) with discard thickness at 1.366 inches (34.7 mm)
• Outside diameter of 13.85 inches (351.8 mm) suitable for heavy-duty applications
• Five mounting bolt holes with a bolt circle diameter of 6.339 inches (161 mm)
• Center hole diameter of 5 inches (127 mm) for precise fitment behind the hub
• Weight approximately 34.5 lbs (15.68 kgs) ensuring robust construction
• Smooth surface finish optimized for consistent pad contact

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

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating product line is designed to provide enhanced elemental protection through a complete coating process on both the disc and hat surfaces. This full coating helps prevent corrosion and extends rotor life, especially in environments prone to moisture and road salt exposure. The rotors maintain structural integrity and braking efficiency while reducing maintenance needs for Chevrolet and GMC heavy-duty vehicles.

Detailed Product Description

This vented disc brake rotor features straight vanes that promote effective airflow to dissipate heat generated during braking, reducing the risk of brake fade. The fully coated finish on both the disc and hat surfaces protects against rust and corrosion, which is critical for vehicles like the Chevrolet P30 and GMC P3500 that often operate in tough conditions. With a nominal thickness of 1.437 inches and a discard thickness of 1.366 inches, this rotor meets OEM specifications for safe and reliable braking performance. The smooth surface finish ensures even pad wear and consistent braking response. The rotor mounts behind the hub using five bolt holes, each with a diameter of 0.657 inches, arranged on a 6.339-inch bolt circle diameter, ensuring precise fitment and easy installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors causing brake pulsation
• Corrosion damage repair due to exposure to road salt or moisture
• Improved heat dissipation to reduce brake fade during heavy-duty use
• Restoring braking performance on Chevrolet P30 and GMC P3500 vehicles
• Addressing rotor thickness below manufacturer discard limits

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness (1.366 inches) before installation
• Clean mounting surfaces to prevent uneven rotor seating
• Torque mounting bolts to manufacturer specifications for secure fitment
• Check compatibility with vehicle ABS systems; this rotor does not include an ABS tone ring
• Inspect brake pads and replace if worn to optimize braking performance

Quality Assurance and Warranty

Centric brake rotors are manufactured to meet or exceed OEM standards for fit, form, and function. The full coating process provides added protection against corrosion, extending rotor service life. While specific warranty details are not provided here, Centric products typically come with a limited warranty covering defects in materials and workmanship. Always refer to the manufacturer’s warranty documentation for complete terms.