Chevrolet Silverado 2500 HD Performance Exhaust - Magnaflow - Direct-Fit Diesel Oxidation Catalyst - `01-`05
Chevrolet Silverado 2500 HD Performance Exhaust - Magnaflow - Direct-Fit Diesel Oxidation Catalyst - `01-`05
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Chevrolet Silverado 2500 HD Performance Exhaust - MagnaFlow - Direct-Fit Diesel Oxidation Catalyst - 01-05. This MagnaFlow OEM-grade Diesel Oxidation Catalyst (DOC) is a direct-fit replacement designed for 2001–2005 Chevrolet Silverado 2500 HD and compatible GMC Sierra 2500 HD applications, engineered to maintain emissions compliance and factory operation.
Built to replicate OE flow dynamics, this spun-body converter uses precision metrology during development for reliable fit and function. The compact, low-mass design with a single laser-fusion weld reduces leak points and improves thermal efficiency. Constructed from corrosion-resistant stainless steel and featuring mandrel-bent tubing, the unit installs with basic hand tools—no cutting or welding required—and comes with the necessary gaskets and hardware to simplify installation. It is designed to meet Federal/EPA emissions requirements for applicable OBDII federal vehicles; please confirm local regulations for your state before purchase.
Features
- Direct-fit for 2001–2005 Chevrolet Silverado 2500 HD / GMC Sierra 2500 HD
- Federal/EPA-compliant for applicable OBDII federal vehicles
- Spun-body design with single laser-fusion weld for reduced leak risk
- Mandrel-bent tubing and stainless steel construction for durability
- Includes gaskets and installation hardware; no cutting or welding required
- OE-sized barbed hangers and OE-like flow dynamics to preserve performance
If you have questions or need fitment help, call us—our team can advise on compatibility and installation. We offer installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. Please call 512-982-9393 (TX) or 562-981-6800 (CA) for details or to schedule service. Note that state rules vary; contact us to confirm legality in your area.
If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
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Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
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