Centric 320.66034F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor is built for heavy-duty front brake applications that demand OE-style performance and corrosion resistance. Part number 320.66034F features a fully coated finish, vented construction, and a smooth surface to support consistent braking on compatible Chevrolet and GMC trucks and vans.

For drivers searching for a front brake rotor for a 1995-2002 Chevrolet C3500, 1996-2002 Chevrolet Express 3500, or 1996-2002 GMC Savana 3500, this GCX rotor is engineered to match the vehicle’s original metallurgy and fitment profile.

GCX Full-Coating Features

• Centric GCX Elemental Protection Disc Brake Rotors - Full Coating
• Part number 320.66034F
• Fully coated disc finish with coated hat for rust and corrosion resistance on non-mating surfaces
• Vented rotor design with straight vane style
• Smooth surface type for OE-style brake pad contact
• ABS tone ring included
• Hub-and-rotor mounting style
• Application-specific coating pattern and metallurgy matched to OEM profiles
• Built for heavy-duty dual rear wheel front applications where listed

Product Line Details

Centric’s GCX line is designed around vehicle-specific coating patterns and rotor metallurgy. The RS200 finish is applied to non-mating surfaces to help protect the rotor from rust while maintaining a clean appearance over time. Centric uses enhanced carbon and high carbon alloy formulations across the GCX family to align with original equipment material requirements for the listed applications.

Detailed Description

Centric 320.66034F is a front disc brake rotor for select Chevrolet and GMC heavy-duty platforms, including Chevrolet C3500, Chevrolet Express 3500, GMC C3500, and GMC Savana 3500 applications. With a 12.496-inch outside diameter, 1.539-inch nominal thickness, 1.465-inch discard thickness, 8.197-inch overall height, and 6.500-inch bolt circle, this rotor is built to match the dimensional requirements of the confirmed fitments. The 8-lug pattern, 14 mm stud thread diameter, and 116 mm center hole diameter support the specified front hub assemblies.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Rotor Helps Address

• Front brake pulsation caused by worn or uneven rotor surfaces
• Rust buildup on exposed rotor surfaces
• Brake noise related to inconsistent pad contact
• Loss of braking consistency on heavy-duty front axle applications
• Replacement needs for OE-style front rotors on Chevrolet and GMC trucks and vans

Installation Notes and Tips

Verify rotor dimensions, hub configuration, and brake pad condition before installation. This rotor is listed for front position only and should be matched to the exact year, make, model, and configuration shown in the fitment data. Clean the hub mounting surface thoroughly to help prevent runout-related brake issues. Confirm bearing, seal, and ABS-related components as needed during service.

Quality Assurance

Centric designs the GCX line to align with OE performance targets and vehicle-specific metallurgy requirements. The coated finish on non-mating surfaces is intended to improve corrosion protection and maintain appearance over the service life of the rotor.

• Fits 1996-2002 Chevrolet Express 3500, front
• Fits 1996-2002 GMC Savana 3500, front
• Fits 1995-2000 Chevrolet C3500, front
• Fits 1997-2000 Chevrolet C3500, front
• Fits 1995-2000 GMC C3500, front
• Fits 1997-2000 GMC C3500, front
• Fits 1996 Chevrolet G30, front
• Fits 1996 GMC G3500, front