DFC Geospec Rotors for Heavy-Duty GM Applications

The Dynamite Friction DFC Geospec Rotor Set, part number 4004-48049, is a front and rear disc brake rotor set for select Chevrolet and GMC trucks and vans. It covers a wide range of heavy-duty applications, including Chevrolet Silverado 2500 HD, Silverado 3500 HD, GMC Sierra 2500 HD, Sierra 3500 HD, Express 3500, and Savana 3500 models.

DFC Geospec Rotors are part of the Dynamite Friction DFC Geospec Rotors line and are listed for direct fitment across multiple GM platforms. This part number 4004-48049 is a practical choice when replacing worn brake rotors on work vans and heavy-duty pickups.

Key Features

• Disc brake rotor set for front and rear positions
• Fits select Chevrolet Silverado 2500 HD and Silverado 3500 HD applications
• Fits select GMC Sierra 2500 HD and Sierra 3500 HD applications
• Fits Chevrolet Express 3500 and GMC Savana 3500 van applications
• Also listed for Chevrolet Avalanche 2500 and classic 3500-series truck applications
• Part number: 4004-48049

Detailed Description

Built for broad GM coverage, the DFC Geospec Rotor Set 4004-48049 supports front and rear brake service on 2001-2020 Chevrolet and GMC vehicles listed in the fitment data. Applications include 2001-2010 Chevrolet Silverado 2500 HD, 2007-2010 Chevrolet Silverado 3500 HD, 2001-2010 GMC Sierra 2500 HD, and 2007-2010 GMC Sierra 3500 HD, along with Express 3500 and Savana 3500 vans in multiple model years. It also covers select Silverado 3500, Sierra 3500, and classic HD variants, plus 2003-2004 Chevrolet Avalanche 2500 with the noted body raise requirement.

For buyers searching for Chevrolet Silverado 2500 HD front and rear brake rotors, GMC Sierra 3500 HD rotor replacement, or Express 3500 disc brake rotor set applications, 4004-48049 provides a fitment-specific option from Dynamite Friction.

Common Reasons for Replacement

• Brake pulsation or steering wheel shake during braking
• Visible rotor wear, scoring, or heat checking
• Reduced braking consistency on heavy-duty trucks and vans
• Rotor replacement during pad service or brake overhaul

Installation Notes and Tips

Verify axle configuration, wheel setup, and model-year fitment before ordering. Some applications require specific notes such as single rear wheels, 3.54 gear ratio, 123mm rear disc center hole, or a 2 inch body raise. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

• Fits 2013-2020 Chevrolet Express 3500, front and rear; 3.54" gear ratio noted on select applications
• Fits 2006-2012 Chevrolet Express 3500, front and rear
• Fits 2004 Chevrolet Express 3500, front and rear
• Fits 2005 Chevrolet Express 3500, front and rear; 123mm rear disc center hole
• Fits 2003 Chevrolet Express 3500, front and rear; single rear wheels
• Fits 2013-2020 GMC Savana 3500, front and rear; 3.54" gear ratio noted on select applications
• Fits 2006-2012 GMC Savana 3500, front and rear
• Fits 2004 GMC Savana 3500, front and rear
• Fits 2005 GMC Savana 3500, front and rear; 123mm rear disc center hole
• Fits 2003 GMC Savana 3500, front and rear; single rear wheels
• Fits 2001-2010 Chevrolet Silverado 2500 HD, front and rear
• Fits 2007-2010 Chevrolet Silverado 3500 HD, front and rear; single rear wheels
• Fits 2001-2010 GMC Sierra 2500 HD, front and rear
• Fits 2007-2010 GMC Sierra 3500 HD, front and rear; single rear wheels
• Fits 2007 Chevrolet Silverado 2500 HD Classic, front and rear
• Fits 2004-2007 Chevrolet Silverado 3500, front and rear; single rear wheels
• Fits 2007 GMC Sierra 2500 HD Classic, front and rear
• Fits 2007 GMC Sierra 3500 Classic, front and rear; single rear wheels
• Fits 2006 GMC Sierra 3500, front and rear; single rear wheels
• Fits 2001-2005 GMC Sierra 3500, front and rear; SRW
• Fits 2003-2004 Chevrolet Avalanche 2500, front and rear; 2 inch body raise
• Fits 2001-2003 Chevrolet Silverado 3500, front and rear; SRW

Quality Assurance

Dynamite Friction identifies this rotor set under the DFC Geospec Rotors line for GM truck and van brake service. Confirm the exact year, model, and configuration notes against your vehicle before installation.