2011 Chevrolet Silverado 2500HD Direct-Fit Catalytic Converter 4551252 Magnaflow
SKU: 31943421282

2011 Chevrolet Silverado 2500HD Direct-Fit Catalytic Converter 4551252 Magnaflow

Sale price$1737.90 Regular price$1931.00
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

2011 Chevrolet Silverado 2500HD Direct-Fit Catalytic Converter 4551252 MagnaflowOverview: Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct Fit Catalytic Converter 4551252. 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

Overview:

Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter 4551252. 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 2011-2015 Chevrolet Silverado 2500 HD, 2011-2015 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 California Air Resource Board requirements, and has undergone additional testing to be certified by CARB for legal use in CA/CARB restricted states for the listed vehicles.

Interchange:

Brand  Interchange Part Number

Application:

Year Make Model Submodel Engine Size
2011 - 2015 GMC Sierra 2500 HD 6L/V8
2011 - 2015 GMC Sierra 3500 HD 6L/V8
2011 - 2015 Chevrolet Silverado 2500 HD 6L/V8
2011 - 2015 Chevrolet Silverado 3500 HD 6L/V8

Specs:

Air Tube Adaptable No
Outlet Attachment Bolt-On
Overall Length (In.) 62.875
Outlet Quantity 1
Mounting Hardware Included Yes
Inlet Quantity 2
Heat Shield Attached No
Type Direct-Fit
Title California Direct-Fit
Subtitle California / CARB Compliant
Substrate Ceramic
Series California
Oxygen Sensor Location Pre and Post Converter
Outlet Diameter (In.) 3.5
Material Stainless Steel
Body Height (In.) 4
Main Piping Diameter (In.) 3
Inlet Diameter (In.) 3
Inlet Attachment Bolt-On
Hangers Included Yes
Gasket Included No
Finish Stainless Steel
Converter Quantity 2
Clamp Included Yes
Body Width (In.) 4
Body Type Spun
Body Shape Round
Body Length (In.) 10.75
Sensor Port Count 4
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31943421282

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John Steenland
Massapequa, US
★★★★★ 5
Quality cable at an unbeatable price
Size: 2AWG 15FT + 15FT, Color: Red + Black
Wish I found this cable sooner! This cable is much better than the cabke I was previously purchasing! Crimps well, copper is of high quality, coating is excellent, bends great, price is great! Overall very satisfied!
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Reviewed in the United States on April 22, 2026
C
Verified Purchase
Cradgl Tantandolo
Lowell, US
★★★★★ 5
good quality
Size: 2AWG 15FT + 15FT, Color: Red + Black
Well, this is some stiffness, but manageable.
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Reviewed in the United States on March 27, 2026
E
Verified Purchase
Evan Dietzen
Pawtucket, US
★★★★★ 5
Good Cable
Size: 2AWG 15FT + 15FT, Color: Red + Black
Work as intended. I used it to run some cable to a second battery from the first. If you're going to do that though, 100% have two fuses. One next to each battery post. It's pretty heavy cable too, good stuff.
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Reviewed in the United States on November 9, 2025
D
Verified Purchase
Doby bertrand
Birmingham, US
★★★★★ 5
Perfect
Size: 2AWG 15FT + 15FT, Color: Red + Black
Good quality wire
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Reviewed in the United States on May 26, 2026
A
Verified Purchase
Amazon Customer
Grantham, US
★★★★★ 5
Quality and very flexible
Size: 2AWG 15FT + 15FT, Color: Red + Black
I was looking for replacement welder cables that needed to be very flexible. These worked perfectly.
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Reviewed in the United States on November 13, 2025

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