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MagnaFlow Catalytic Converter 334009: 3'/3' Inlet/Outlet, California Grade, Universal Fit (CARB Compliant)

Free shipping on orders over $29.99

$172.28

$ 79 .99 $79.99

In Stock
  • PLEASE VERIFY FITMENT AND EFN COMPATIBILITY PRIOR TO PURCHASE.
  • CALIFORNIA/CARB COMPLIANT - Extensive testing and certification processes are followed to guarantee that 334009 meets emissions standards set by CARB (California Air Resources Board). This catalytic converter is also compliant in states adhering to these standards.
  • UNIVERSAL INSTALLATION - Universal catalytic converters allow you to place it in the exact location and orientation required for your vehicle. Professional installation is highly recommended.
  • CLAMSHELL DESIGN - Durable stainless-steel construction and integrated OEM-like O2 ports guarantee optimal catalytic converter performance and reliability. The clamshell design features a continuous seam weld that ensures superior thermal insulation.
  • CARB GRADE - Catalytic converter 334009 is designed to meet California emissions standards, as well of those of other CARB-regulated states.
  • 5 YEAR / 50,000-MILE LIMITED WARRANTY - Worry-free ownership is made possible thanks to the 5 year/50,000-mile construction and emissions warranty included with this MagnaFlow catalytic converter



Product Description

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catalytic converter exhaust system thermal efficiency compact low mass design muffler high flow

Compact Low-Mass Design

Design allows for greater thermal efficiency

premium construction stainless steel durability powder coating system heat shield anti theft

Premium Construction

Stainless Steel construction for maximum durability and finish

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CARB Compliant

Meets or exceeds California Air Resources Board (CARB) emissions requirements

Executive Order #D-193-104

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Universal Fit

Cutting and welding required for installation

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California Grade CARB Compliant Universal Catalytic Converter

MagnaFlow California Grade CARB Compliant Universal Catalytic Converter 334009 helps keep the check engine light off. Get the right fit for a wide array of vehicles thanks to the adaptable Universal design (cutting and welding is required). With highly corrosion resistant, stainless steel construction, you can have confidence in the quality of this catalytic converter.

This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.

Professional installation is highly recommended. May require custom fabrication, cutting and/or welding along with specific automotive knowledge.

MagnaFlow Part # 334009 has received Executive Order #D-193-104 as evidence of being in accordance with CARB requirements.

Specifications | MagnaFlow Part # 334009

Air Tube Adaptable No
Body Height 3.75"
Body Length 12"
Body Material Stainless Steel
Body Shape Oval
Body Type Clam Shell
Body Width 5.5"
Heat Shield Attached Yes
Heat Shield Material Aluminized Steel
Inlet/Outlet Attachment Weld-On
Inlet/Outlet Diameter 3"
Inlet/Outlet Orientation Straight
Overall Length 16"
Oxygen Sensor Location None
Series California & Colorado
Type Universal CARB Compliant

Richard M.
August 18, 2025
The muffler shops use an app that recommends a much more expensive cat. The state of California has a list of acceptable catalytic converters, this was on that list. It was either CARB or AQMD, I don't recall. Anyway, my emissions went way down after I had a muffler shop install this for me. I think if I had to do it again I would have used clamps and an expander and saved the muffler shop fee, but I would defiantly use this. I passed the smog check after I had this installed. The muffler shop would have charged over twice as much for the whole job.
Joey
June 1, 2025
Good price worked great on my truck passed smog in California
JOSEPH SACK
May 16, 2025
No problems.
Yahir Trinidad
May 8, 2025
I was hesitant to purchase since it’s cheaper than oem catalytic converters that are really expensive. In my scenario I had different engine in my car so their is no oem option. Break it in first 300 miles.
Jeremy Barron
March 22, 2025
I did a lot of researching on catalytic converters before making my choice on the Magnaflow, it met my needs as far as size and it is CA approved. I originally had long tube headers and no cat, because I used to just race the car. After I decided I wanted to daily drive the car again, I had to get right with CA emissions. I bought short tube headers and this Magnaflow cat converter and headed down to the smog shop. The car passed like a new car. I was highly impressed. The build quality on the converter is top notch, I wouldn't expect anything less from Magnaflow.
Matt Haley
March 17, 2025
Bought for 98 econoline since mine was stolen. I needed 3” inlet/outlet. This is tiny compared to oem, of course I don’t expect oem, but damn if this barely passed CA smog. Tech failed it in the am told me to drive it hard and bring it back in the pm. I drove 60 miles to heat it up…it barely passed that time. Tech and I agree this won’t pass in 2 years. Will have to buy another one. Glad it passed but this is a temporary solution.
LaNita
January 15, 2025
Purchased it for my Uncle's truck. Passed CA strict emission test
ALFREDO ALVIDREZ
January 7, 2025
This catalytic converter shows on this add that it is for a 2000 Ford Excursion but it not and it is not a california Compliant , It is For a chevy Truck.
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