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Magnaflow 15-17 NX300h L4 2.5 OEM Underbody Direct Fit Converter - 21-073Find parts that fit my vehicle

Item TL-423341
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      Product Information

      Description, Q&A

      Description

      Keep the check engine light off with MagnaFlow OEM Grade Federal/EPA Compliant Direct-Fit Catalytic Converter 21-073. With features including free-flowing mandrel-bent tubing and highly corrosion resistant stainless steel construction, easily install this spun body converter yourself using the proper tools, no cutting or welding required. MagnaFlow's state-of-the-art metrology department uses the latest 3D scanning systems during research and development, so you can be confident that your new part will fit and function like the original equipment. By replicating the OE spun body design, the single laser fusion weld greatly reduces the possibility of a leak, and our compact, low-mass design also allows for greater thermal efficiency. Designed to fit the 2016-2018 Toyota RAV4 and 2015-2020 Lexus NX300h, this direct-fit catalytic converter also interchanges with OE part 17410-36200. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed Federal emissions requirements set forth by the EPA, complying with legal standards for OBDII Federally registered vehicles with California or Federal/EPA Emission systems.

      Exhaust systems are a great way to enhance the looks, sounds, and performance of your vehicle.

      MagnaFlow got its start as a natural extension of Car Sound Exhaust, the parent company to MagnaFlow. Car Sound Exhaust specializes in superior catalytic converter and performance exhaust technology, and has been doing so for the past 35+ years, earning their reputation as an international market leader. In addition to the MagnaFlow brand, Car Sound Exhaust also represents Rumble and Bosal USA, further cementing the company as an industry leader in all areas of replacement and performance exhaust.

      Magnaflow 21-073

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      5.0

      Reviews of Magnaflow Exhaust Products (73)

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      Reviews of Magnaflow Exhaust products have an average rating of 5.0 out of 5

      Jul 5, 2025

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade (07-09 3.8L Jeep Wrangler JK)

      5
      2007 Rubicon - Aaron83s

      excellent cats

      I purchased this cat system replacement because my 07 cats were bad, was pretty easy to throw on along with new sensors. we had to cut the old one out, but no problem. new one went on without a hitch, soaked all bolts with pb blast for a few days, and whamoo! new exhaust!! paired with magna flow duel tip street series muffler. sounds great, low rumbel, but not obnoxious. and best yet, no engine lights, been running it 500 miles so far

      Jun 7, 2025

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade; Driver Side (12-18 3.6L Jeep Wrangler JK)

      5
      2013 Wrangler - AnthonyZ.

      Fit and finish good.

      This Cat is on par with other Magnaflow products that I own. I replaced the Cat when replacing the entire exhaust system. I replaced the O2 sensors as well. Removal and installation of front fender and inner fender took longer than the Cat replacement. I recommend using anti-seize on all hardware.

      Jun 7, 2025

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade; Passenger Side (12-18 3.6L Jeep Wrangler JK)

      5
      2013 Wrangler - AnthonyZ.

      Fit and finish good.

      The Cat build quality is on par with other Magnaflow products that I have owned. The removal of the front fender and inner took longer than the Cat replacement. I replaced the O2 sensors at the same time. I replaced the Cats as I was replacing the whole exhaust system. Recommend using anti-seize on all mounting hardware.

      May 3, 2025

      Review shared from Magnaflow Universal Catalytic Converter; Standard Grade; 2.25-Inch; Rear (93-95 Jeep Wrangler YJ)

      5
      1993 Wrangler - Protection

      Exhaust upgrade

      Teamed with headers and new pipes. Easily installed. End result is a perfect for me sounding exhaust.

      Oct 14, 2024

      Review shared from Magnaflow Direct-Fit Catalytic Converter; HM Grade (97-99 4.0L Jeep Wrangler TJ)

      5
      1998 Wrangler - RobertB

      OEM replacement

      Took longer to get the old one off due to seized flange bolts. Major power and performance. Engine has 213000 mile and now it runs like new.

      Apr 15, 2024

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade; Driver Side (12-18 3.6L Jeep Wrangler JK)

      5
      KeithA.

      Magnaflow converters

      Great product, fit very well and great performance than factory

      Mar 31, 2024

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade; Passenger Side (20-25 3.6L Jeep Gladiator JT)

      4
      2020 Launch Edition - JFDII

      Fits, more (not less).

      The flange for the Cat was thicker than the original, which required some reworking.

      Feb 26, 2024

      Review shared from Magnaflow Universal Catalytic Converter; HM Grade; 2.25-Inch (Universal; Some Adaptation May Be Required)

      1
      2019 EcoBoost - ReneGarcia

      Not that great

      So my catalytic needed to get replaced and purchased this one but the check engine light still on, and if I remove the code it still keeps coming on.

      Dec 2, 2023

      Review shared from Magnaflow Universal Catalytic Converter; California Grade CARB Compliant; 2.25-Inch (87-95 2.5L or 4.0L Jeep Wrangler YJ)

      5
      Fosfo

      Excellent fit!

      This catalytic converter is the right fit for my 1994 YJ (legal in CA) and the price was right!!!!

      Oct 20, 2023

      Review shared from Magnaflow Direct-Fit Catalytic Converter; OEM Grade (10-11 3.8L Jeep Wrangler JK)

      1
      2011 Rubicon - Jkrum

      Check engine light came on.

      Tried to remedy cat codes now have oxygen sensor. Tried new sensors, checked wiring these cats suck

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