Centric 320.66042F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66042F, is built for front axle applications that demand OE-style braking performance with added resistance to rust and corrosion. It is a fully coated, vented rotor with a smooth surface and application-specific metallurgy for consistent fitment on heavy-duty Chevrolet, GMC, Cadillac, and Hummer platforms.

For drivers searching for a front brake rotor for Chevrolet Express 2500, GMC Savana 2500, or Chevrolet Silverado 2500 applications, this Centric GCX rotor is engineered to match the vehicle’s original brake profile while maintaining a clean appearance over time.

Key Features

• Part number 320.66042F
• Fully coated disc finish with coated hat and RS200 protection on non-mating surfaces
• Vented rotor design with straight vane style for front brake use
• Smooth surface type for OE-style pad contact
• Application-specific coating pattern matched to brake pad friction type
• Metallurgy formulated to align with OEM-style carbon alloy requirements
• Large 12.787 in. outside diameter and 3.512 in. overall height
• 8-lug mounting pattern with floating disc mounting

Product Details

Centric’s GCX Full Coating rotor line focuses on corrosion protection and OE-level performance across a wide range of truck and van applications. This rotor uses a fully coated finish on non-mating surfaces to help resist rust while preserving the braking surface where pad contact occurs. The GCX line also uses application-specific coating patterns and rotor metallurgy to better match the brake system requirements of each vehicle platform. Part number 320.66042F is a front disc brake rotor for 1999-2022 Chevrolet and GMC heavy-duty applications, including Express, Savana, Silverado, Sierra, Suburban, Yukon XL, and Hummer H2 models.

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 rotors
• Rust buildup on exposed rotor surfaces
• Corrosion on vehicles used in wet, salted, or high-moisture environments
• Brake noise related to inconsistent rotor surface condition
• Loss of OE-style braking feel on heavy-duty trucks and vans

Installation Notes and Fitment

Compatible With front applications only. Fits 2007-2022 Chevrolet Express 2500, front; 2022 Chevrolet Express 3500, front with JH6; 2007-2022 GMC Savana 2500, front; 2022 GMC Savana 3500, front with JH6; 2000-2013 Chevrolet Suburban 2500, front; 2000-2013 GMC Yukon XL 2500, front; 2003-2009 Hummer H2, front; 2007 Chevrolet Silverado 1500 HD Classic, front; 2007 GMC Sierra 1500 HD Classic, front; 2005-2006 Chevrolet Avalanche 2500, front; 2003-2006 Chevrolet Express 2500, front with 8 lug disc brake caliper compatible with brake drum; 2005-2006 Chevrolet Silverado 1500 HD, front; 2001-2003 Chevrolet Silverado 1500 HD, front; 2003-2006 GMC Savana 2500, front with 8 lug disc brake caliper compatible with brake drum; 2005-2006 GMC Sierra 1500 HD, front with 8 lug, heavy duty; 2005 Cadillac DeVille, front with heavy duty; 2000-2005 Cadillac DeVille, front; 2005 Chevrolet Silverado 1500, front; 2005 GMC Sierra 1500 HD, front with heavy duty; 2005 GMC Sierra 2500 HD, front except HD package; 2002-2004 Chevrolet Avalanche 2500, front except 2 inch body raise, light duty; 2004 Chevrolet Silverado 1500, front with 8 lug wheels, heavy duty; 1999-2004 Chevrolet Silverado 2500, front; 2004 GMC Sierra 1500, front with 8 lug wheels, heavy duty; 1999-2004 GMC Sierra 2500, front; 2001-2003 GMC Sierra 1500 HD, front.

Before installation, verify rotor dimensions, hub fitment, lug count, and brake package notes such as JH6, heavy duty, or 8-lug configuration. Confirm the rotor matches the vehicle’s front axle brake setup and inspect pads, calipers, and hub surfaces for wear or contamination.

Quality Assurance

Centric manufactures the GCX line with OE-focused metallurgy and corrosion-resistant coating technology to support consistent braking performance and long-term appearance. The rotor is engineered around vehicle-specific brake requirements rather than a universal fit profile, which helps maintain proper application matching across the listed Chevrolet, GMC, Cadillac, and Hummer platforms.