2011-2016 GM HD Catalytic Converter Direct Fit (MAG21-252)
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2011-2016 GM HD Catalytic Converter Direct Fit (MAG21-252)
Keep your Chevy Silverado or GMC Sierra 2500HD/3500HD running efficiently with the MagnaFlow OEM Grade Direct-Fit Catalytic Converter. Designed to maintain emissions compliance and restore factory-level performance, this replacement installs easily with no cutting or welding required. Precision engineered using advanced 3D scanning technology, it mirrors original equipment specifications for dependable fit and function. The OE-style spun body and laser fusion weld construction help reduce leak potential, while the compact design promotes improved thermal efficiency. Built from corrosion-resistant stainless steel, this solution delivers long-term durability you can trust.
Features
- OEM Grade direct-fit design
- Federal / EPA compliant
- Mandrel bent tubing for optimized exhaust flow
- OE-style spun body construction
- Single laser fusion weld to reduce leak risk
- Compact low-mass design for improved thermal efficiency
- No cutting or welding required
- Corrosion-resistant stainless steel construction
- Developed using advanced 3D scanning technology
Specifications
- Compliance: Federal / EPA
- Emission Compatibility: OBDII
- Installation: Direct-Fit
- Material: Stainless Steel
Vehicle Fitment
Vehicle Fitment
Part Specifications
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Part No.MAG21-252
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Cross Reference #888563133805
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VendorMagnaflow
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Shipping Weight35.1 lb
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Prop 65⚠️ Warning: Cancer & Reproductive Harm



