GMC Sierra 2500 HD Catalytic Converter - Passenger Side Rear - Magnaflow - Direct-Fit, HM Grade - `01-`06
GMC Sierra 2500 HD Catalytic Converter - Passenger Side Rear - Magnaflow - Direct-Fit, HM Grade - `01-`06
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GMC Sierra 2500 HD Catalytic Converter - Passenger Side Rear - Magnaflow - Direct-Fit, HM Grade - `01-`06. This direct-fit MagnaFlow HM Grade converter replaces the passenger-side rear unit on 2001–2006 GMC Sierra 2500 HD models, engineered to meet Federal/EPA emissions requirements while retaining OE-style fit and flow.
Designed for enthusiasts who expect durability and proper operation, this unit uses a spun-body design and precision fitment developed with 3D scanning to mirror OE geometry. The compact, low-mass construction improves thermal efficiency, and the single laser-fusion weld reduces leak points. Mandrel-bent tubing preserves smooth exhaust flow to help maintain factory engine performance and fuel economy. Installation is straightforward with included gaskets and hardware—no cutting or welding required when proper tools and procedures are used.
Features
- HM Grade, Federal/EPA-compliant direct-fit replacement
- Spun-body design with laser fusion weld for fewer leak points
- Mandrel-bent tubing to retain OEM-like flow characteristics
- Corrosion-resistant stainless steel construction and included gaskets
- Designed to fit 2001–2006 GMC Sierra 2500 HD (passenger side rear)
If you have questions about fitment or installation, call us directly—our specialists can help verify compatibility and discuss installation or customization. We have two locations where we offer installation and customization services: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA). 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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