Centric 320.66038F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66038F, is a front vented rotor built for direct-fit service on select Chevrolet, GMC, Oldsmobile, and Isuzu applications. Its fully coated disc finish and coated hat help protect exposed surfaces, while the smooth braking surface supports consistent pad contact.

Key Features

• Centric GCX Elemental Protection Disc Brake Rotors - Full Coating
• Part number 320.66038F for front axle applications
• Fully coated disc finish with coated hat finish
• Vented rotor design with straight vane style
• Smooth surface type for even pad engagement
• 5-lug pattern with 120.700 mm bolt circle diameter
• Outside diameter: 273.300 mm (10.760 in.)
• Nominal thickness: 29.000 mm (1.142 in.); discard thickness: 27.500 mm (1.083 in.)

Product Details

Centric GCX Elemental Protection Disc Brake Rotors are built for front brake service where corrosion resistance and stable rotor dimensions matter. The fully coated finish covers the disc and hat surfaces, helping protect the rotor from environmental exposure before and after installation. With a vented, straight-vane construction and floating disc mounting, this rotor is specified for vehicles that use a 5-lug, 120.700 mm bolt circle and a 70.800 mm center hole. This part number, 320.66038F, is listed for 1997-2005 Chevrolet Blazer, 1997-2005 GMC Jimmy, 1998-2004 Chevrolet S10, 1998-2004 GMC Sonoma, 1997-2001 Oldsmobile Bravada, and 1998-2000 Isuzu Hombre front brake applications.

What It Helps Address

• Front brake pulsation caused by worn or out-of-spec rotors
• Surface corrosion on exposed rotor and hat areas
• Uneven pad contact from a damaged or scored braking surface
• Brake noise related to rotor wear or finish deterioration
• Loss of braking consistency on aging front brake components

Installation Notes and Tips

Verify rotor dimensions, hub fit, bolt circle diameter, and center hole diameter before installation. This rotor is for front position use only and does not include ABS tone ring or bearings. For best results, inspect pads, calipers, and hub surfaces during service, and confirm the rotor meets the vehicle’s minimum thickness specification before returning the vehicle to service. Compatible With 1997-2005 Chevrolet Blazer front, 1997-2005 GMC Jimmy front, 1998-2004 Chevrolet S10 front, 1998-2004 GMC Sonoma front, 1997-2001 Oldsmobile Bravada front, and 1998-2000 Isuzu Hombre front.

Quality Assurance

Centric GCX rotors are engineered with application-specific dimensions and protective coating coverage to support consistent fitment and corrosion resistance in brake service. Part number 320.66038F is specified for the listed front applications and should be matched to the vehicle’s brake system requirements before installation.