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HomeShopCatalytic Converter Direct FitMagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 2
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 3
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 4
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 5
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 6
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 7
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 8
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 9
MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD - Image 10

MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 for Chevy Silverado and GMC Sierra 2500 HD

SKU: 21-252

$927.00

In stock

7 in stock

Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. This direct-fit catalytic converter is designed to fit the 2011-2019 Chevrolet Silverado 2500 HD, 2011-2019 GMC Sierra 2500 HD, and additional vehicles. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems. Magnaflow OEM Grade Direct-Fit Catalytic Converter MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-252 helps keep the check engine light off. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed to fit the 2011-2019 Chevrolet Silverado 2500 HD, 2011-2019 GMC Sierra 2500 HD, and additional vehicles. Hardware is included to eliminate the hassle of working with corroded factory parts. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.
  • Torca AccuSeal® Exhaust Clamps provide a full 360-degree equally distributed clamping force preventing pipe distortion while creating a complete seal and maintaining serviceability
  • Your trusted source for EPA-compliant catalytic converters, providing assurance of genuine compliance while delivering quality that will last
  • Mandrel bent tubing retains OEM-like design and geometry, ensuring smooth exhaust flow for peak fuel economy and engine operation
  • OE-sized barbed exhaust hangers made from corrosion-resistant 410 stainless steel, designed to reduce noise and vibration
  • High Strength 16 Gauge 409 Stainless Steel Tubing For Exceptional Corrosion Resistance And Maximum Service Life
  • Expertly crafted to replicate OEM-like flow dynamics, maintaining factory performance and fuel efficiency
  • Expertly Crafted To Replicate Oem-Like Flow Dynamics/Maintaining Factory Performance And Fuel Efficiency
  • Precision stamped collector design for optimal exhaust flow, engine efficiency, and fuel economy
  • Precision Stamped Collector Design For Optimal Exhaust Flow/Engine Efficiency And Fuel Economy
  • Torca Accuseal Exhaust Clamps Provide A Full 360-Degree Equally Distributed Clamping Force
  • Simplifies Installation With Essential Gaskets And Hardware Being Included In The Box
  • OE-Sized Barbed Exhaust Hangers Made From Corrosion-Resistant 410 Stainless Steel
  • Your Trusted Source For EPA-Compliant Catalytic Converters
  • Mandrel Bent Tubing Retains Oem-Like Design And Geometry
  • Durable 308 Stainless Steel Mig Welds
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Description

Ensure your vehicle remains emissions compliant and your check engine light stays off with the MagnaFlow OEM Grade Direct-Fit Catalytic Converter Part Number 21-252. Designed specifically for 2011-2019 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models, this catalytic converter offers a straightforward installation process that requires no cutting or welding, thanks to its precise fit and included hardware. Constructed from high-quality 16-gauge 409 stainless steel, it provides exceptional corrosion resistance, ensuring long-lasting durability under demanding conditions. The mandrel-bent tubing maintains OEM-like flow dynamics, promoting optimal exhaust flow, which enhances both engine performance and fuel economy. The converter’s design, including a precision stamped collector, maximizes engine efficiency while meeting or exceeding Federal emissions standards set by the EPA, making it an ideal choice for legally compliant vehicle modifications or replacements.
MagnaFlow’s commitment to quality is evident in the integration of state-of-the-art 3D scanning during development, which guarantees a perfect fit and reliable performance. The spun body construction and laser fusion weld significantly reduce the potential for leaks, providing peace of mind and reliable operation. The package includes OE-sized barbed exhaust hangers made from corrosion-resistant stainless steel and Torca AccuSeal® exhaust clamps that apply full 360-degree force to ensure a secure, leak-free connection. This product is a trusted solution for vehicle owners seeking a durable, efficient, and emissions-compliant catalytic converter that restores factory-like performance and ensures legal compliance.
Designed for ease of installation, the MagnaFlow catalytic converter comes with all necessary hardware and gaskets, simplifying the replacement process. Its compact, low-mass design enhances thermal efficiency, helping to keep your vehicle running smoothly and efficiently. Whether for routine replacement or to maintain emissions standards, this converter is engineered to deliver lasting performance, making it an excellent choice for owners of heavy-duty pickup trucks who demand OEM quality with the confidence of EPA compliance.

Features:

  • OEM-grade design with factory-like fit and finish
  • Constructed from durable 16-gauge 409 stainless steel for corrosion resistance
  • Mandrel-bent tubing ensures smooth exhaust flow for optimized performance
  • Includes hardware and gaskets for easy installation
  • Laser fusion welded spun body minimizes leak risk
  • State-of-the-art 3D scanning guarantees precise fit and function
  • Compliance with Federal emissions standards (EPA) for legal operation
  • Designed specifically for 2011-2019 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD models
  • Torca AccuSeal® clamps provide secure, 360-degree sealing force
  • OE-sized barbed exhaust hangers for reduced noise and vibration
  • Low-mass, thermally efficient design for enhanced durability
  • Corrosion-resistant stainless steel hardware included

Fitment:
Chevrolet Silverado 2500 HD High Country 2015
Chevrolet Silverado 2500 HD High Country 2016
Chevrolet Silverado 2500 HD High Country 2017
Chevrolet Silverado 2500 HD High Country 2018
Chevrolet Silverado 2500 HD High Country 2019
Chevrolet Silverado 2500 HD LT 2011
Chevrolet Silverado 2500 HD LT 2012
Chevrolet Silverado 2500 HD LT 2013
Chevrolet Silverado 2500 HD LT 2014
Chevrolet Silverado 2500 HD LT 2015
Chevrolet Silverado 2500 HD LT 2016
Chevrolet Silverado 2500 HD LT 2017
Chevrolet Silverado 2500 HD LT 2018
Chevrolet Silverado 2500 HD LT 2019
Chevrolet Silverado 2500 HD LTZ 2011
Chevrolet Silverado 2500 HD LTZ 2012
Chevrolet Silverado 2500 HD LTZ 2013
Chevrolet Silverado 2500 HD LTZ 2014
Chevrolet Silverado 2500 HD LTZ 2015
Chevrolet Silverado 2500 HD LTZ 2016
Chevrolet Silverado 2500 HD LTZ 2017
Chevrolet Silverado 2500 HD LTZ 2018
Chevrolet Silverado 2500 HD LTZ 2019
Chevrolet Silverado 2500 HD WT 2011
Chevrolet Silverado 2500 HD WT 2012
Chevrolet Silverado 2500 HD WT 2013
Chevrolet Silverado 2500 HD WT 2014
Chevrolet Silverado 2500 HD WT 2015
Chevrolet Silverado 2500 HD WT 2016
Chevrolet Silverado 2500 HD WT 2017
Chevrolet Silverado 2500 HD WT 2018
Chevrolet Silverado 2500 HD WT 2019
Chevrolet Silverado 3500 HD High Country 2015
Chevrolet Silverado 3500 HD High Country 2016
Chevrolet Silverado 3500 HD High Country 2017
Chevrolet Silverado 3500 HD High Country 2018
Chevrolet Silverado 3500 HD High Country 2019
Chevrolet Silverado 3500 HD LT 2011
Chevrolet Silverado 3500 HD LT 2012
Chevrolet Silverado 3500 HD LT 2013
Chevrolet Silverado 3500 HD LT 2014
Chevrolet Silverado 3500 HD LT 2015
Chevrolet Silverado 3500 HD LT 2016
Chevrolet Silverado 3500 HD LT 2017
Chevrolet Silverado 3500 HD LT 2018
Chevrolet Silverado 3500 HD LT 2019
Chevrolet Silverado 3500 HD LTZ 2011
Chevrolet Silverado 3500 HD LTZ 2012
Chevrolet Silverado 3500 HD LTZ 2013
Chevrolet Silverado 3500 HD LTZ 2014
Chevrolet Silverado 3500 HD LTZ 2015
Chevrolet Silverado 3500 HD LTZ 2016
Chevrolet Silverado 3500 HD LTZ 2017
Chevrolet Silverado 3500 HD LTZ 2018
Chevrolet Silverado 3500 HD LTZ 2019
Chevrolet Silverado 3500 HD WT 2011
Chevrolet Silverado 3500 HD WT 2012
Chevrolet Silverado 3500 HD WT 2013
Chevrolet Silverado 3500 HD WT 2014
Chevrolet Silverado 3500 HD WT 2015
Chevrolet Silverado 3500 HD WT 2016
Chevrolet Silverado 3500 HD WT 2017
Chevrolet Silverado 3500 HD WT 2018
Chevrolet Silverado 3500 HD WT 2019
Chevrolet Suburban 3500 HD LS 2017
Chevrolet Suburban 3500 HD LS 2018
Chevrolet Suburban 3500 HD LS 2019
Chevrolet Suburban 3500 HD LT 2017
Chevrolet Suburban 3500 HD LT 2018
Chevrolet Suburban 3500 HD LT 2019
GMC Sierra 2500 HD Base 2015
GMC Sierra 2500 HD Base 2016
GMC Sierra 2500 HD Base 2017
GMC Sierra 2500 HD Base 2018
GMC Sierra 2500 HD Base 2019
GMC Sierra 2500 HD Denali 2011
GMC Sierra 2500 HD Denali 2012
GMC Sierra 2500 HD Denali 2013
GMC Sierra 2500 HD Denali 2014
GMC Sierra 2500 HD Denali 2015
GMC Sierra 2500 HD Denali 2016
GMC Sierra 2500 HD Denali 2017
GMC Sierra 2500 HD Denali 2018
GMC Sierra 2500 HD Denali 2019
GMC Sierra 2500 HD SLE 2011
GMC Sierra 2500 HD SLE 2012
GMC Sierra 2500 HD SLE 2013
GMC Sierra 2500 HD SLE 2014
GMC Sierra 2500 HD SLE 2015
GMC Sierra 2500 HD SLE 2016
GMC Sierra 2500 HD SLE 2017
GMC Sierra 2500 HD SLE 2018
GMC Sierra 2500 HD SLE 2019
GMC Sierra 2500 HD SLT 2011
GMC Sierra 2500 HD SLT 2012
GMC Sierra 2500 HD SLT 2013
GMC Sierra 2500 HD SLT 2014
GMC Sierra 2500 HD SLT 2015
GMC Sierra 2500 HD SLT 2016
GMC Sierra 2500 HD SLT 2017
GMC Sierra 2500 HD SLT 2018
GMC Sierra 2500 HD SLT 2019
GMC Sierra 2500 HD WT 2011
GMC Sierra 2500 HD WT 2012
GMC Sierra 2500 HD WT 2013
GMC Sierra 2500 HD WT 2014
GMC Sierra 3500 HD Base 2015
GMC Sierra 3500 HD Base 2016
GMC Sierra 3500 HD Base 2017
GMC Sierra 3500 HD Base 2018
GMC Sierra 3500 HD Base 2019
GMC Sierra 3500 HD Denali 2011
GMC Sierra 3500 HD Denali 2012
GMC Sierra 3500 HD Denali 2013
GMC Sierra 3500 HD Denali 2014
GMC Sierra 3500 HD Denali 2015
GMC Sierra 3500 HD Denali 2016
GMC Sierra 3500 HD Denali 2017
GMC Sierra 3500 HD Denali 2018
GMC Sierra 3500 HD Denali 2019
GMC Sierra 3500 HD SLE 2011
GMC Sierra 3500 HD SLE 2012
GMC Sierra 3500 HD SLE 2013
GMC Sierra 3500 HD SLE 2014
GMC Sierra 3500 HD SLE 2015
GMC Sierra 3500 HD SLE 2016
GMC Sierra 3500 HD SLE 2017
GMC Sierra 3500 HD SLE 2018
GMC Sierra 3500 HD SLE 2019
GMC Sierra 3500 HD SLT 2011
GMC Sierra 3500 HD SLT 2012
GMC Sierra 3500 HD SLT 2013
GMC Sierra 3500 HD SLT 2014
GMC Sierra 3500 HD SLT 2015
GMC Sierra 3500 HD SLT 2016
GMC Sierra 3500 HD SLT 2017
GMC Sierra 3500 HD SLT 2018
GMC Sierra 3500 HD SLT 2019
GMC Sierra 3500 HD WT 2011
GMC Sierra 3500 HD WT 2012
GMC Sierra 3500 HD WT 2013
GMC Sierra 3500 HD WT 2014

Additional information

Weight 34.6 lbs
Dimensions 45.6 × 19.2 × 11.6 in
air_freight_prohibited

false
not_carb_approved

true
carb_acknowledgement_required

true
ltl_freight_required

false
prop_65

N
part_type

automotive
epa

Compliant
regular_stock

t
upc

888563133805
brand

Magnaflow
part_number

21-252

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