MagnaFlow 3" Universal California OBDII Catalytic Converter

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Fitment Info

  • Universal California OBDII Catalytic Converter
  • Monolithic honeycomb catalyst design
  • Universal fit
  • Stainless steel construction
  • 5-year/50,000 mile limited 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.


  • California CARB compliant catalytic converter for OBD 2 vehicles
  • Monolithic honeycomb catalyst design improves internal surface area for maximum catalyst reaction ad exhaust flow
  • Ribbed heat shield maintains the structure and shape of the converter in extreme temperatures
  • Closely welded seam holds the catalyst in place and prevents its from loosening and shifting
  • Fits most vehicle OEM exhaust systems
  • Made with tough and rust-resistant strength for super strength and durability
  • MagnaFlow's 5-year/50,000 mile limited warranty and guarantee of excellent quality and performance
  • Made in the USA by local workforce using locally obtained materials
Universal California OBDII Catalytic Converter

Universal California OBDII Catalytic Converter

The 3" MagnaFlow California OBDII universal catalytic converter is the best replacement for your stock cat on your OBDII vehicle. It complies with CARB requirements, and you can install it in your truck or car if you live in the state. The converter helps to reduce poisonous emissions while also improving the performance of your exhaust and engine.

Monolithic Honeycomb Catalyst Design

Monolithic Honeycomb Catalyst Design

The converter features a monolithic honeycomb design for the catalyst. It increases the exhaust flow surface area for maximum conversion even with high exhaust volumes.

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.

Closely Welded Seam

Closely Welded Seam

The MagnaFlow California OBDII universal catalytic converter has a firmly welded seam 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.

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.

Stainless Steel Construction

Stainless Steel Construction

The converter 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 Limited Warranty

5-Year/50,000 Mile Limited Warranty

The manufacturer provides a 5-year or 50,000-mile limited warranty for every purchase of the MagnaFlow California OBDII universal catalytic converter. 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

The cat 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:

445009, 445109, 4451300, 4451309, 445300, 447109, 447209, 448009, 4481309, 455009, 456209, 459009, 459409, 545009, 5451309, 546009, 5461209, 546209, 5551209, 5551359, 5561209, 5581309, 5591309

To purchase this product for your vehicle, please select the Year, Make and Model of your vehicle at the top of this page.

Buick (2004-2005)

LeSabre, Park Avenue

Cadillac (1995-2004)

DeVille, Eldorado, Escalade, Seville

Chevrolet (1996-2010)

Astro, Avalanche 2500, Blazer, C1500, C2500, C3500, Corvette, Express 1500, Express 2500, Express 3500, G30, K1500, K2500, K3500, P30, S10, Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, Silverado 3500 Classic, Silverado 3500 HD, Suburban 2500, Tahoe

Chrysler (2007-2008)


Dodge (2001-2008)

Challenger, Charger, Magnum, Ram 1500, Ram 1500 Van, Ram 2500, Ram 2500 Van, Ram 3500, Ram 3500 Van

Ford (1996-2006)

E-150, E-150 Club Wagon, E-150 Econoline, E-150 Econoline Club Wagon, E-250, E-250 Econoline, E-350 Club Wagon, E-350 Econoline, E-350 Econoline Club Wagon, E-350 Super Duty, Excursion, F-250, F-250 HD, F-250 Super Duty, F-350, F-350 Super Duty

GMC (1996-2010)

C1500, C2500, C3500, G3500, Jimmy, K1500, K2500, K3500, P3500, Safari, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Sonoma, Yukon, Yukon XL 2500

Hummer (2006)


Isuzu (2000)


Jeep (2006-2010)

Grand Cherokee

Oldsmobile (2000-2001)


Pontiac (2004-2005)