Centric 320.66036F Disc Brake Rotor - Rear

Centric GCX Rear Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66036F, is a rear vented rotor built for specific Chevrolet, GMC, Oldsmobile, and Isuzu applications. It features a fully coated disc finish and coated hat finish to help resist corrosion on exposed surfaces while maintaining a smooth braking surface.

For drivers searching for a rear brake rotor for 1997-2005 Chevrolet Blazer, 1998-2004 Chevrolet S10, or 1997-2004 GMC Sonoma applications, this rotor provides the correct fitment details and OE-style dimensions needed for service work.

Key Features

• Part number: 320.66036F
• Fully coated disc finish with coated hat finish
• Vented rotor design with straight vanes
• Smooth surface type for brake pad contact
• 5-lug pattern with 120.600 mm bolt circle diameter
• Outside diameter: 295.000 mm (11.614 in)
• Nominal thickness: 20.000 mm (0.787 in)
• Discard thickness: 18.500 mm (0.728 in)
• Overall height: 95.000 mm (3.740 in)
• Center hole diameter: 70.700 mm (2.783 in)

Product Details

The Centric GCX Elemental Protection Disc Brake Rotors - Full Coating line focuses on corrosion protection across the rotor’s non-friction surfaces while preserving the braking face for consistent pad contact. This rotor uses a floating/DIH disc mounting style and a vented construction, making it a direct-fit rear brake rotor option for the listed truck and SUV applications. The 320.66036F is also specified with no ABS tone ring and no bearings included.

Fits 1997-2001 Chevrolet Blazer, rear; Fits 2002 Chevrolet Blazer, rear; Fits 2003 Chevrolet Blazer, rear; Fits 2004 Chevrolet Blazer, rear; Fits 2005 Chevrolet Blazer, rear; Fits 1998-2004 Chevrolet S10, rear; Fits 1997-2003 GMC Jimmy, rear; Fits 2004-2005 GMC Jimmy, rear; Fits 1998-2004 GMC Sonoma, rear; Fits 1997-2001 Oldsmobile Bravada, rear; Fits 1998-2000 Isuzu Hombre, rear.

Common Service Uses

• Rear rotor replacement for corrosion-worn brake components
• Brake pulsation caused by rotor wear beyond discard thickness
• Brake noise related to uneven rotor surfaces
• Service repair on rear disc brake systems for S10, Sonoma, Blazer, Jimmy, Bravada, and Hombre models
• Restoring proper rear brake contact on vented rotor applications

Installation Notes and Tips

Verify rotor dimensions, bolt pattern, center hole diameter, and rear axle configuration before installation. This rotor is listed for rear position applications only, including notes for certain Chevrolet Blazer and GMC Jimmy configurations such as 95mm tall disc or limited slip rear axle variants. Always inspect pads, calipers, and hub surfaces during brake service to help ensure even contact and proper rotor seating.

Quality Assurance

Centric GCX rotors are built with coated surfaces and application-specific dimensions to support accurate fitment on the listed vehicles. Part number 320.66036F is specified for rear brake service on the covered Chevrolet, GMC, Oldsmobile, and Isuzu models.