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

Item J100804
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Market Price $334.99 You Save 12% ($39.01)
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$295.98 (kit)

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      Review & Installation Video

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Ceramic Honeycomb Substrate
      • Ribbed Body
      • Easy Bolt-On Installation
      • Designed for 97-99 Jeep Wrangler TJ Models
      • 49 State Emissions Legal


      Features. The MagnaFlow Direct-Fit Catalytic Converter has a monolithic honeycomb catalyst with a ceramic coating. It features an easy bolt-on installation and meets OE specifications.

      Construction. This converter has a stainless steel case. Its ceramic-coated substrate allows for maximum flow and surface area. Featuring a ribbed body, this converter ensures reduced expansion and distortion when it gets heated.

      Fitment. This MagnaFlow Direct-Fit Catalytic Converter is designed for 97-99 Jeep Wrangler TJ models with a 4.0L engine.

      Note: This catalytic converter is not legal in the state of California.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 1997 1998 1999 Details

      MPN# 23227

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (28)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 28 customers

      Installation Time: Afternoon

      • December 20, 2019

        5 2002 Wrangler - Garrett78901 Installation Time: Afternoon

        Easy install

        The install was very easy. It came with everything I needed. The hardest part was removing the old one.

        Helpful (2)
      • November 15, 2019

        5 1993 Wrangler - ski1218 Installation Time: Less than 1 Hour

        perfect fit

        worked great just no hardware i also bought the cat back muffler i’m waiting for that to come.

        Helpful (2)
      • August 22, 2019

        5 1997 Wrangler - RockBottom Installation Time: Less than 1 Hour

        Great fit, sounds good!

        I'll start off by saying I mated this to an aftermarket long tube header on my I-6. That being said, every exhaust part was new. So, the header, this crossover and cat, and MBRP cat back and my inline 6 cylinder sounds MEAN! The install was super easy, again because the old exhaust was saws-all'ed off (LOL) and it passed e-check no problem.

        Helpful (2)
      • June 20, 2019

        5 1998 Wrangler - JMP224 Installation Time: Afternoon

        Right fit

        Install was not as tough as I thought it was going to be. Great fit!!

        Helpful (1)
      • April 16, 2019

        5 1997 Wrangler - gwells402 Installation Time: Afternoon

        Great Catalytic Convertor

        This this is amazing with a straight pipe after the cat. It gives your jeep the sound that its balls dropped. At low rpms it sounds like a truck and at higher rpms it sounds more like a sports car. The other bolts people are talking about do help but i managed to get mine on with the stock bolts. LOVE THIS THING!!!!!!

        Helpful (2)
      • April 14, 2019

        5 2001 Wrangler - CoreyZ Installation Time: Less than 1 Hour

        Nice cat

        Easy to install ! Can feel the difference! Would recommend to all!

        Helpful (2)
      • March 19, 2019

        5 1997 Wrangler - BP Installation Time: Less than 1 Hour

        Good flow

        Combined with headers and new exhaust sounds great runs great.

        Helpful (2)
      • March 17, 2019

        4 1995 Wrangler - Bigbob62 Installation Time: Less than 1 Hour

        Catalytic converters

        Good product received it in less than a week and it was a perfect fit

        Helpful (3)
      • February 04, 2019

        5 1997 Wrangler - JesseJ Installation Time: Afternoon

        97 TJ

        Direct bolt on, works just fine. A little loud for me but its been a while now so Im use to it.

        Helpful (5)
      • December 29, 2018

        5 1999 Wrangler - JesseS Installation Time: Less than 1 Hour

        Easy Install

        Great product! Install took less than 30 minutes.

        Helpful (7)

      Questions & Answers (12 answers)

      5 Top Rated Questions

      Does this require any welding? If not does it come with clamps?

      • The Magnaflow Direct-Fit Catalytic Converter will not require welding and would use clamps for the install.

      Helpful (5)

      What does this come with? Does it need any type of gaskets? Does it come with the 02 sensors?

      • This catalytic converter includes everything pictured and does not come with gaskets or O2 sesnors. No gaskets are required for installation.

      Helpful (3)

      Does this come with the mid pipe as well as the catalytic converter?

      • This kit comes with the catalytic converter, as well as all piping shown in the above photos.

      Helpful (2)

      Which O2 sensor do I need to purchase with this product

      • A factory /factory equivalent O2 sensor can be used.

      Helpful (1)

      Does this come with the clamps?

      • The Magnaflow Direct-Fit Catalytic Converter will not include clamps.

      Helpful (1)
      Post Your Question
      7 More Questions
      What dos the "HM" grade mean? 0 answer
      Will this fit my 1998 Wrangler SE 2.5L I4? Your website recommend this item as a direct replacement for my vehicle but the item description says otherwise. 1 answer
      will this fit my 1993 jeep yj 2.5l ? 1 answer
      Is this a 2-way or a 3-way catalytic converter? 0 answer
      Will it fit on my 1999 Jeep Wrangler 4 cylinder 0 answer
      Is this California Complaint? 1 answer
      i have a header on my 4.0 idk what brand it was put in about 7 years ago will this bolt up to it or does it only work with a stock manifold? 1 answer

      Tech Specs

      Will It Fit My Wrangler

      • TJ Wrangler 2 Door - 97, 98, 99

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