MagnaFlow 2.50" Universal California OBDII Catalytic Converter

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Fitment Info

  • Universal CARB-Compliant OBDII Catalytic Converter
  • Closely welded seam
  • Universal fit
  • 16-gauge stainless steel construction
  • 5-year/50,000 mile warranty
  • Made in the USA

Our #1 value is customer service.

We believe in doing right by our customers, no matter what it takes.

In keeping with that, we offer a “perfect fit guarantee” that ensures your satisfaction on 3 levels: low price, free shipping, and perfect fitment.

- Alan Marek, Founder of

The Lowest Price Anywhere--Guaranteed

At PartCatalog, we’ll beat any competing vendor’s price. And we’re so confident in our rock-bottom prices that we’ll refund the difference if you find a lower price elsewhere.

Free Shipping Both Ways

Our “free shipping both ways” policy means that returns and orders ship free of charge. When you place an order, you pay only the list price and any applicable taxes. We cover the shipping to save you money and ensure timely delivery.

100% Guaranteed to Fit

In the highly unlikely event of a fitment problem, we’ll return your purchase at no cost to you. We pay return shipping on all orders, so it won’t cost you a penny to send back a defective part.


  • 2.5" inlet CARB compliant universal fit catalytic converter for OBDII vehicles
  • Closely welded seam ensures that the catalyst stays in place
  • Ribbed heat shield provides structural stability to keep the converter in shape in the hottest temperatures
  • Expands internal surface area for maximum catalytic reactions and exhaust flow
  • Designed to fit a variety of vehicle applications with minimum modification
  • Made strong to withstand extreme heat and tough road conditions
  • MagnaFlow's 5-year/50,000 mile warranty of quality and performance
  • Made in the USA with local labor and resources
Universal CARB-Compliant OBDII Catalytic Converter

Universal CARB-Compliant OBDII Catalytic Converter

The MagnaFlow universal California OBDII cat is a common solution for the P0420 Diagnostic Trouble Code. It is CARB compliant and has a 2.5" inlet and outlet. The converter cleans up your exhaust fumes and produces less harmful emissions. It also helps to keep your engine and exhaust system in optimal condition for the best performance.

Closely Welded Seam

Closely Welded Seam

The catalytic converter seam is closely welded to create a strong bond between the catalyst and the wall. It ensures that the catalyst stays intact and does not loosen and shift inside the converter.

Ribbed Heat Shield

Ribbed Heat Shield

The cat also has a ribbed heat shield that provides a rigid wall for heat protection. It creates a stable structure to contain the hottest exhaust fumes without getting out of shape.

Monolithic Honeycomb Catalyst Design

Monolithic Honeycomb Catalyst Design

The MagnaFlow universal California OBDII cat features a monolithic honeycomb design for the catalyst. It increases the exhaust flow surface area for maximum conversion even with high exhaust volumes.

Universal Fit

Universal Fit

It is designed to fit your vehicle's OEM exhaust system regardless of its make or model. It may fit perfectly or require a little modification depending on your vehicle model.

16-Gauge Stainless Steel Construction

16-Gauge Stainless Steel Construction

The cat is made with premium-grade stainless steel that won't rust, oxidize or corrode. It stays strong for years and takes all the heat to maintain its hold.

5-Year/50,000 Mile Warranty

5-Year/50,000 Mile Warranty

The manufacturer provides a 5-year or 50,000-mile limited warranty for every purchase of the MagnaFlow universal California OBDII cat. This is a guarantee of quality and performance beyond the ordinary. If you need help with your warranty or you would like further information, feel free to reach out to PartCatalog.

Made in the USA

Made in the USA

This catalytic is proudly made in the USA with a local labor force, raw materials, and technology. Your purchase not only helps to support local businesses but also creates jobs for thousands of Americans every year.

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This product comes with the manufacturer's limited warranty.
Part Numbers

The following part numbers are available in this product line:

408006, 418006, 418036, 441006, 441036, 441206, 441306, 441356, 444106, 444206, 444506, 445006, 445036, 445056, 445106, 4451306, 4451336, 4451356, 445136, 447106, 447176, 447206, 447236, 447256, 448006, 448056, 448106, 4481306, 451206, 451256, 45156, 455006, 456006, 456056, 4561206, 456206, 457056, 457106, 457206, 458006, 458076, 459006, 459056, 5411306, 541306, 542006, 5421206, 5421276, 542176, 542206, 545006, 545056, 5451306, 5451356, 545356, 546006, 546056, 5461206, 5461336, 546206, 551006, 551076, 5551206, 5551226, 5551356, 5561206, 5561356, 557406, 5581306, 5581376, 558176, 558306, 558406, 5591056, 559106, 5591076, 5591306, 559176, 559206

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