Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
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Features, Description, Reviews, Q&A, Specs & Installation
Emission Control Upgrade. The Magnaflow Catalytic Converter is engineered for 2011-2016 6.0L GMC Sierra 2500 HD models and is built to improve emissions performance while maintaining factory-level functionality. Designed with precision, this component helps your vehicle stay compliant with EPA regulations without setting off the check engine light.
Construction and Appearance. Featuring a polished chrome finish, this catalytic converter is crafted from free-flowing mandrel-bent stainless steel tubing. Its structure maximizes exhaust flow while offering high corrosion resistance. The converter is developed using advanced 3D scanning systems to ensure precise compatibility and durability.
Installation. This unit offers a direct fit replacement design that bolts on using included Torca clamps. Its adaptable construction allows for quick installation using the vehicle’s stock mounting points, making the upgrade straightforward and efficient.
Warranty. Backed by a limited 5-year/50,000-mile structural warranty and a limited 25,000-mile emissions warranty, this catalytic converter offers extended coverage and peace of mind for long-term performance and regulatory compliance.
Application. This Magnaflow Catalytic Converter fits 2011-2016 6.0L GMC Sierra 2500 HD models. It helps your truck stay road-legal and environmentally compliant while improving exhaust flow and maintaining engine performance.
Magnaflow 21-252
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation Info
Installation Time
(approx) 1 Hour
Difficulty Level:
Simple installation for anyone.
Installation Guides
No guide available for this part yet.
What's in the Box