MagnaFlow 60504 Diesel Oxidation Catalyst | 2007-2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax

Performance Benefits

• Meets Federal EPA Emissions Standards – Legal for use on Federal/OBDII vehicles (not CARB-compliant)
• Direct-Fit Design – No cutting or welding required; includes gaskets and hardware
• Premium OE-Grade Stainless Construction – Built with 409 and 308 stainless steel for long life in tough environments
• Mandrel-Bent Tubing – Maintains factory exhaust flow characteristics for peak performance
• Single Laser Fusion Weld – Minimizes leak risk and improves structural integrity
• Spun Body Design – Compact and thermally efficient layout with OE-style fitment
• Barbed Stainless Hangers – Matches factory mount points to reduce vibration and ensure proper alignment

Product Overview

The MagnaFlow 60504 Direct-Fit Catalytic Converter is engineered for 2007–2010 GM 6.6L Duramax diesel trucks (VIN 6, LMM), including Silverado and Sierra 2500HD/3500HD models. This diesel oxidation catalyst (DOC) is designed to restore exhaust flow and emissions performance while maintaining compatibility with factory systems.

Using mandrel-bent, 16-gauge 409 stainless steel tubing and a 12" round spun body, this converter is built for long-term durability and thermal efficiency. It includes all required hardware and gaskets, avoiding the need to reuse corroded stock components. MagnaFlow’s CNC-based development process ensures precise fitment, while a 5-year emissions warranty delivers peace of mind.