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Flowmaster Direct-Fit Catalytic Converter (03-06 4.0L Jeep Wrangler TJ)

ExtremeTerrain no longer carries the Flowmaster Direct-Fit Catalytic Converter (03-06 4.0L Jeep Wrangler TJ). Please check out 1997-2006 TJ Jeep Wrangler Stock Replacement Exhaust for an updated selection.
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Features & Details

  • Rear Right/Passenger Side Replacement
  • Stainless Steel Construction
  • With OE-Style Flanges
  • 50,000 Mile/5-Year Exterior Casing Warranty
  • Fits 03-06 Jeep Wrangler TJ Models with a 4.0L Engine
Features. Replace the faulty or old catalytic converter of your jeep with the Flowmaster Direct-Fit Catalytic Converter for reduced harmful emissions. It is backed with a 25,000 mile emission warranty.

Construction. This catalytic converter is machined from stainless steel and has OE-style flanges. This replacement catalytic converter from Flowmaster is designed to meet or exceed USEPA standards and includes 50,000 mile/5-year exterior casing warranty.

Application. This catalytic converter is designed for 03-06 Jeep Wrangler TJ models with a 4.0L engine.

Fitment: 2003 2004 2005 2006 Details

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

Tech Specs
Will it fit my Wrangler?

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Questions & Answers (18)

5 Top Rated Questions

is this legal in california?

  • The Flowmaster Direct-Fit Catalytic Converter has not yet been tested or approved by the California Air Resource Board (CARB) meaning this is not legal for use upon highway in the state of California.

Helpful (1)

would this work if i were to put it on my 2000 2.5l, trying to save some money?

  • This will not fit vehicles other than 97-98 2.5L TJ models.

Helpful (0)

Does this come with instructions?

  • These will indeed come with install instructions.

Helpful (0)

Will this fit a 1994 4.0L? Your website says it will I would just like to double check.

  • Yes, this catalytic converter will work with 93-95 Jeep Wrangler YJ models with a 2.5L or 4.0L engine, including your 94 4.0L.

Helpful (0)

Will this fit my 1997 Jeep Wrangler sport with a 4.0 engine ? The video doesn’t mention 4.0 just 2.5

  • No, this Flowmaster Direct-Fit Catalytic Converter is just for the 97-98 Jeep Wrangler TJ models with a 2.5L engine. Magnaflow does offer an option for the 4.0 which can be found here: https://www.extremeterrain.com/magnaflow-catalytic-converter-tj-23227.html.

Helpful (0)
Post Your Question
10 More Questions
A reviewer said the hangar to attach the cat to the trans mount isn't included...photos show it attached. Which is correct? 1 answer
will this catalytic converter when installed to a stock 1998 jeep wrangler tj pass smog? 1 answer
Does this come with the midpipe that attached to the manifold.. I have tried to cross reference this part eleseware and it only comes up for Cherokee applications.. will this fit my 99 wrangler tj sport 4.0 inline 6 1 answer
Do I need to purchase an o2 sensor with this product? 1 answer
do you know why this is only for the 97-98 model year? the 97-2000 model year 2.5L have the same part number on the individual parts. is there a similar product for the 99 tj with a 2.5L? 1 answer
I am wanting to replace my exhaust from the header back. Does this piece run from the stock header to where a cat-back system would begin? 1 answer
WHAT IS THE EXACT LENGTH OF THIS CATALYTIC CONVERTER?? THANK YOU JOHN 1 answer
Is this catalytic converter California approved? 1 answer
Will this fit a 1997 wrangler with a 2.5L 4 cylinder? 1 answer
Will this bolt up to a pace setter header or do i have to cut and weld the pace setter downfall pipe to the cat pipe? 1 answer

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Customer Reviews (28) Write a Review

Overall Rating 4.4

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Exhaust Note 4.428571 4.4
  • Fit & Finish 4.464286 4.5
  • Bang For Your Buck 4.678571 4.7



  • 5/5

    Installation Time: Afternoon

    October 24, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Sounds good, fits good

    Didn't take super long to install, I like how the pipe and cat are two separate pieces. It makes it much easier to deal with during install

    EricK

    Year: 1998Submodel: Wrangler

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    September 28, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Catalytic converter

    This Flowmaster direct fit catalytic converter fit perfectly on my 97 Tj had a little trouble getting bolts out of old one and they weren’t long enough for this one but highly recommend this product

    DavidP

    Year: 1997Submodel: Wrangler

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 18, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (93-95 Jeep Wrangler YJ w/ 2.5L or 4.0L)

    Great product - easy to install on 94 Wrangler

    Good product that was easy to install on my 1994 Jeep Wrangler.

    DouglasC

    Year: 1994Submodel: Wrangler

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    June 27, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    My Purchase Of Product

    This product fit and finish was amazing along with the exhaust and tail pipe easy to install. I would recommend this product to any one.

    WilliamS

    Year: 1997Submodel: Wrangler

    Helpful (2)

  • 5/5

    Installation Time: Afternoon

    June 13, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    FlowMaster exhaust

    Very easy to install came with all the hardware you need except for the clamp from cat to muffler. Everything lined up perfectly. And the price was pretty good!! I would recomend this to anyone needing new manifold back to muffler!

    GeorgeB

    Year: 1998Submodel: Wrangler

    Helpful (2)

  • 5/5

    June 07, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (93-95 Jeep Wrangler YJ w/ 2.5L or 4.0L)

    Quietented 2.5 no cat exhaust

    I have bad ears, and the no cat exhaust actually hurt my ears. This converter made it MUCH better.

    Dennis

    Year: 1995Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    May 05, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (93-95 Jeep Wrangler YJ w/ 2.5L or 4.0L)

    Perfect fit

    Installed with no problems no more rattling very happy

    CodyW

    Year: 1995Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Full Day

    March 29, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (93-95 Jeep Wrangler YJ w/ 2.5L or 4.0L)

    Perfect fit

    Old cat and muffler were shot so I decided to replace the whole exhaust with the flowmaster products and they all fit together like a glove. The pipe going into the muffler was a bit long and required some cutting but nothing major. Not sure how easy installation would be if you're just replacing the cat, but cutting the old exhaust out and sliding a whole new one in was a breeze. Overall a very simple upgrade that makes the world of a difference.

    Jim

    Year: 1993Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Less than 1 Hour

    February 18, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (00-03 2.5L or 4.0L Jeep Wrangler TJ)

    Worked like a charm!!

    It bolted up with no problems whatsoever. The catalytic converter has a hole in it if you need the sensor, all you need to do is unscrew the plug. If you don’t the sensor its plugged. Very pleased with the catalytic converter would get it again.

    Lester

    Year: 2001Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    February 03, 2018

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Great quality perfect fit worth the money

    Perfect fit really easy to install. Woulda been easier with 2 people but I did it by myself in a few hours

    TrevorP

    Year: 1999Submodel: Wrangler

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    January 11, 2018

    Good Buy

    Great fit and easy to install. Took more time to cut the old cat off.

    KevinM

    Year: 2005Submodel: Rubicon Unlimited

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    December 05, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (93-95 Jeep Wrangler YJ w/ 2.5L or 4.0L)

    Feeling the Flow

    The Flowmaster CAT with mid-pipe was a great addition to my recently installed brand new exhaust system for my 95 Jeep Wrangler YJ. The CAT has fantastic flow and feel, and the overall performance and power is much improved over the stock system. The shop installer stated it fit like a glove when they connected it to the Flowmaster II Cat Back Exhaust kit! I would highly recommend to all YJ owners looking for an affordable solid mod upgrade or replacement of your stock system.

    JeremyR

    Year: 1995Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    October 18, 2017

    Good replacement and upgrade

    I am fixing up a 2006 LJ and the stock exhaust is one piece from header all the way back to muffler. The rear cat is part of that long pipe. This part is a great replacement, especially if you have one piece stock. Now you can get in and work on the transfer case or replace the muffler, without having to go all the way up to the header. Also, this is slightly longer than some other cat replacements, so that helps with the amount you get to cut off. Measure first, and leave yourself enough to possibly trim again. I cut too close and had to run to auto parts store for a 2 inch filler piece. It looks nice once you get it on there and greatly simplifies a new muffler or just working under the skid plate area. I replaced the muffler (after cutting that off at the joint as well) so I am not sure how the sound is changed just by this. Overall it does seem to run smoother now.

    MatthewL

    Year: 2006Submodel: Wrangler Unlimited

    Helpful (6)

  • 2/5

    Installation Time: Afternoon

    August 26, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Not what I would expect

    Opened up when it arrived all looked good until I went to put it together. The cat pipe and the exhaust pipe would not go together. I had to take it to a exhaust shop and have the bell on the cat pipe enlarged to fit the exhaust pipe. Not what I'd expect from flowmaster. So to sum it up what should have been a breeze to assemble in my book was a genuine paint in the but.

    JeffW

    Year: 1997Submodel: Wrangler

    Helpful (11)

  • 5/5

    Installation Time: Afternoon

    August 22, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (97-00 2.5L or 4.0L Jeep Wrangler TJ)

    Perfect

    Why did I shop around so much locally for generic cats when this was right here for a lower price, and the perfect fit. Check you later, check engine light!

    Rex

    Year: 1997Submodel: Wrangler

    Helpful (2)

  • 3/5

    Installation Time: Weekend

    April 26, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Not a day job for ALL setups.

    Be prepared that there will, as with all Jeeps, be some hiccups. Once i stopped cursing at the previous owners botch job, the parts all assembled with relative ease. And, i do love most Flowmaster products for the ease of install. This is one exception, being a heavy duty part for a lifetime of use.... the flange clamp to attach the down pipe to the exhaust manifold is THICK by comparison to the stock. The piping itself is also thicker. Thus the quandary, the stock manifold bolts are 1/2" too short at least. Be prepared for it.

    pokey1168

    Year: 1997Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    April 25, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Nice converter

    When I got my jeep someone straight piped it and it was missing the cat so i got this and the banks monster cat back. Really easy install. Really hard getting the old pipe off. It sounds great though.

    Sophie

    Year: 1997Submodel: Wrangler

    Helpful (2)

  • 3/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    January 24, 2017

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Bad Fit

    I had this part put on at a muffler shop. The tech told me that the part did not fit right. The piece which had the catalytic converter on it was to short. The piece which came off the exhaust manifold needed to be modified some.

    skegger

    Year: 1998Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 15, 2016

    Review from Flowmaster Direct-Fit Catalytic Converter (97-00 2.5L or 4.0L Jeep Wrangler TJ)

    Works well

    Mechanic said it was an easy install and is better than the stock one(my stock cat was falling apart)

    KJeep

    Year: 1998Submodel: Wrangler

    Helpful (4)

  • 5/5

    September 06, 2016

    Review from Flowmaster Direct-Fit Catalytic Converter (97-98 2.5L Jeep Wrangler TJ)

    Jeep wrangler engine pipe to cat

    Great quality and fit perfect very easy to install.took me longer to gather all my tools and creeper than it was to install in my jeep

    Mac

    Year: 1997Submodel: Wrangler

    Helpful (5)

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