Centric 320.66006F Disc Brake Rotor - Front or Rear

Centric GCX Full-Coated Front Rotor

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66006F, is built for OE-style braking performance with added resistance to rust and corrosion. Its fully coated finish helps maintain a cleaner appearance on exposed surfaces, making it a practical choice for Chevrolet S10, GMC Sonoma, and related front brake applications.

Key Features

• Part number 320.66006F
• Fully coated disc finish with coated hat for corrosion resistance
• Vented rotor design with smooth surface type
• Outside diameter: 10.500 in. / 266.700 mm
• Nominal thickness: 1.035 in. / 26.300 mm
• Discard thickness: 0.957 in. / 24.300 mm
• 5-lug pattern with 4.748 in. / 120.600 mm bolt circle
• Floating disc mounting and straight vane style

Product Line Details

Centric GCX Elemental Protection Disc Brake Rotors are application-specific rotors engineered around brake pad friction type and OEM-style metallurgy. Centric uses enhanced carbon or high carbon alloy formulations to match the vehicle’s original rotor profile, helping maintain consistent braking characteristics across the intended application range.

Detailed Description

This Centric GCX rotor is designed for front brake service on a wide range of GM and Cadillac platforms, including Chevrolet S10, Chevrolet S10 Blazer, GMC S15, GMC S15 Jimmy, GMC Sonoma, Chevrolet Blazer, GMC Jimmy, and Oldsmobile Bravada. The fully coated RS200-style protection on non-mating surfaces helps resist rust on the hat and outer surfaces while the smooth, vented braking surface supports stable pad contact. Part number 320.66006F is a direct-fit rotor choice for drivers replacing worn front rotors on 1979-1997 applications listed in the fitment data.

What It Helps Address

• Brake pulsation caused by rotor wear or thickness variation
• Rust buildup on exposed rotor surfaces
• Reduced braking consistency from worn front rotors
• Noise or vibration related to uneven rotor condition
• Replacement needs for front brake service on GM and Cadillac platforms

Installation Notes and Tips

Verify rotor dimensions, hub fitment, and bolt pattern before installation. Clean the hub mounting surface thoroughly to reduce runout concerns, and inspect pads, calipers, and hardware condition during brake service. This rotor is listed for front applications only in the fitment data provided. This part cross-references common OE-style rotor applications for the same vehicle platforms.

Quality Assurance

Centric designs GCX rotors to align with OE performance targets and vehicle-specific metallurgy requirements. The coated finish is intended to provide added protection on non-mating surfaces throughout normal service life.