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MagnaFlow Universal Catalytic Converter Standard Grade Federal/EPA Compliant 54959 - Stainless Steel 3in Inlet/Outlet Diameter, 9in Overall Length, No O2 Sensor - Standard Grade Replacement

4.6 (9) Write Review
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$99.00

$ 41 .99 $41.99

In Stock
  • EPA PRE-OBDII COMPLIANT - This catalytic converter is designed to meet or exceed Federal EPA (Environmental Protection Agency) Pre-OBDII emissions requirements in compliance with legal standards for federally registered vehicles. NOT for use in California or Colorado
  • UPGRADED DESIGN - Using our latest catalytic converter manufacturing technologies, these early vehicle applications benefit from updated flow characteristics and modern construction designs
  • STAINLESS STEEL CONSTRUCTION - The utilization of highly corrosion resistant stainless-steel construction and MagnaFlow’s cutting-edge CNC precision robotic manufacturing techniques ensure consistently perfect fitment, reliable performance and superior longevity
  • 5 YEAR / 50,000-MILE LIMITED WARRANTY - Worry-free ownership is made possible thanks to the 5 year/50,000-mile construction and 25,000-mile emissions warranty included with this MagnaFlow catalytic converter
  • UNIVERSAL FIT - MagnaFlow recommends professional installation for the universal configuration of this catalytic converter as cutting, fabrication and/or welding may be required. In addition, we suggest contacting the official MagnaFlow Exhaust Products seller account to confirm there’s no issue selecting your vehicle in Amazon’s system to ensure it is the correct fit


Product Description

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Compact Low-Mass Design

Design allows for greater thermal efficiency

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Premium Construction

Stainless Steel construction for maximum durability and finish

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Federal EPA Compliant

Meets or exceeds Federal EPA emissions requirements

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Universal Fit

Cutting and welding required for installation

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Standard Grade Federal / EPA Compliant Universal Catalytic Converter

MagnaFlow Standard Grade Federal/EPA Compliant Universal Catalytic Converter 54959 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 Federal emissions requirements set forth by the EPA, complying with legal standards for pre-OBDII Federally registered vehicles.

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

Specifications | MagnaFlow Part # 54959

Air Tube Adaptable No
Body Length 9"
Body Material Stainless Steel
Body Shape Round
Body Type Spun
Body Width 4"
Inlet/Outlet Attachment Weld-On
Inlet/Outlet Diameter 3"
Overall Length 9"
Oxygen Sensor Location None
Series Standard Grade
Substrate Material Ceramic
Type Universal Federal/EPA Compliant

Yashoda
2025-08-29 16:36:15
Used this cat on a 2017 WRX STI to replace a cat on an aftermarket downpipe that didnt seem to filter well (smelled catless). This new catalytic converter eliminated the smell but does seem to be a little more restrictive as far as turbo spool. I’m overall happy with it. I haven’t had any egg or rotten smells like others stated, maybe a little the first time it got hot / broke in.
dijadoit
2025-08-14 20:11:26
Since I was redoing my whole exhaust and changed my downpipe diameter and upgraded to a 3 way instead of 2 way suppose to use; though my car has hybrid of OBD1 & 2 on my volvo.
Charlie P
2025-06-01 14:40:50
It welded in easy enough but randomly has an egg/onion smell
Omie
2025-04-02 18:13:51
Inlet was slightly larger which allowed me some play and angle adjustment in a 3" pipe. At about 9" overall length was the right size. Installed it and within 3 to 5 mins it started cleaning excess fuel. Then it started glowing inside and min after a blue flame. Yikes I was running rich, had to back off in fuel table and it has since settled down. Did not melt thankful but impressive that it burned that raw fuel glowing and shooting blue flame. Wife is happier garage is no longer a gas station.
daber-6768
2025-02-25 12:36:34
Magnaflow cats worked great, welded mine to headers instead of extension pipes. After I thought about it and wished I would of done a little more thinking, should of welded the cats to the rest of the exhaust.
Daryl Hockaday
2025-02-10 12:08:24
Worked as advertised!
Friend built
2025-01-07 17:54:23
Put this on my skyline to try and pass emissions, not even close to passing. Only about 10 gps less co than when running catless.
_Customer_X
2025-01-04 10:59:59
I originally bought my 2002 WRX, and quickly found out that the previous owner had removed the cat. Since this created a very strong exhaust smell, I wanted a cat which would fit the 3 inch piping installed, and would eliminate most of the smell without sacrificing much performance. This did the trick!
Harry
2024-11-18 16:23:27
Not as pictured