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Magnaflow 557405 Universal Catalytic Converter Inlet/Outlet California CARB - 2.25in

(Nissan Altima 2009-13, Maxima 2009-13, 350Z 2007-09, 370Z 2009-13, Versa 2007-12, Juke 2011-15; GMC Yukon XL 1500 2003-06, Yukon 2003-06 + 89 more models)

Part of: Magnaflow Universal Catalytic Converter Inlet/Outlet California CARB

Other options in this family: Magnaflow 5411304 Magnaflow 5551225 Magnaflow 338025 Magnaflow 551075

Manufacturer

Picture for manufacturer Magnaflow

Part Number

557405
5 reviews
Sale Price

$353.00

Estimated ship date Saturday, November 21

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Magnaflow 557405 is a California-compliant universal catalytic converter featuring a 2.25-inch inlet and outlet diameter. Designed for custom exhaust builds and direct replacement applications, this converter meets strict California Air Resources Board (CARB) emissions standards, making it legal for use in California and all other U.S. states.

Magnaflow universal catalytic converters are engineered with a high-flow substrate that reduces harmful exhaust emissions — including hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) — while maintaining strong exhaust flow performance. The stainless steel shell provides long-lasting corrosion resistance and durability in harsh under-vehicle environments.

Key Features:

  • 2.25-inch inlet/outlet diameter for compatibility with a wide range of exhaust systems
  • California CARB-compliant — legal for sale and use in all 50 U.S. states
  • High-flow catalytic substrate minimizes backpressure while reducing emissions
  • Stainless steel outer shell for superior heat and corrosion resistance
  • Universal fit design — suitable for custom exhaust fabrication or replacement installs
  • Meets or exceeds OEM emissions performance requirements

As a universal converter, the Magnaflow 557405 requires welding or custom fabrication for installation. It is ideal for professional exhaust shops and experienced DIY builders looking for a reliable, emissions-legal catalytic converter solution.

Products specifications

Fits

Nissan Altima 2009-13, Maxima 2009-13, 350Z 2007-09, 370Z 2009-13, Versa 2007-12, Juke 2011-15; GMC Yukon XL 1500 2003-06, Yukon 2003-06, Savana 1500 2003-14; Chevrolet Suburban 1500 2003-06, Tahoe 2003-06, Impala 2014 + 85 more models

Heat Shield Included

Yes

Inlet Attachment

Weld-on

Outlet Attachment

Weld-on

Series

California

Heat Shield Material

Aluminized Steel

Inlet Diameter

2.25

Outlet Diameter

2.25

Subtitle

California / CARB Compliant

Oxygen Sensor Location

None

Inlet Orientation

Straight

Outlet Orientation

Straight

Substrate Material

Ceramic

Body Material

Stainless Steel

Material

Stainless Steel

Finish

Stainless Steel

Outlet Quantity

1

Body Type

Clam Shell

Sensor Port Count

0

Heat Shield Attached

Yes

Inlet Quantity

1

Overall Length

13

Air Tube Adaptable

No

Type

Universal

Body Width

4.375

Body Length

9

Body Shape

Round

thanks for shipping to AK

Quick and easy

Good, so far! Finally got my shocks. Thought it was odd that shocks were shipped separately and not in one box. Looks like they were pulled off shelf and shipping sticker slapped on without any thought of damage to shock. Don't think original shock carton was designed to be shipped without extra packaging, just looks cheap and lazy.

great!!

Fast and easy,.................

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