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BBK Catted H-Pipe (86-93 5.0L)

Item 56064
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Market Price $509.99 You Save 12% ($60.00)
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    Features & Details

    • Improves Exhaust Flow and Sound.
    • Mandrel-Bent Aluminized Tubing.
    • High Flow Catalytic Converters Included.
    • Direct Fit.
    • Fits 1986-1993 5.0L Mustangs.
    Improves Exhaust Flow. BBK designed this Catted H-pipe to maximize exhaust flow and increase horse power, their in-house dyno-testing has shown solid gains of 12-20 horsepower depending on application.

    Quality Materials. This BBK direct replacement H-pipe features 2.5” diameter CNC mandrel bent aluminized tubing, original O2 sensor locations, with two high flow catalytic converters, and factory style die-stamped flanges all to ensure maximum flow and horsepower.

    Application. Specifically designed to fit the 1986 to 1993 5.0 Mustangs this Catted H-pipe is a direct fit replacement for the stock mid pipe.

    Technical Note. This BBK product is not legal for use in emission restrictive states.

    Fitment: 1986 1987 1988 1989 1990 1991 1992 1993 Details

    MPN# 1521

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Catted H-pipe
    • (1) Passenger side down pipe
    • (1) Driver side down pipe
    • (1) small length of hose
    • (2) Hose clamps
    • Hardware
    Installation Info
    Tech Specs
    Mid Pipe Specifications
    Style Mid Pipe: Standard length "H" Type Headers Required: Shorty
    Piping Material: Aluminized Steel Piping Size: 2.5"
    Catalytic Converter: Yes Fitment: 1986-1993 5.0 V8 Mustangs
    Will it fit my Mustang?

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        Questions & Answers (7)

        5 Top Rated Questions

        Will this work for a 90 5.0 manual lx convertible with OE exhaust manifolds.

        • Hey Adam, This kit is designed to be a direct fit replacement to the stock manifolds

        Helpful (1)

        will these fit directly to BBK shorty headers Item 5601? I just bought the car and noticed it has BBK shorty headers, and a no name non catted H-pipe?

        • Yes, this h-pipe will work with the BBK shorty headers.

        Helpful (0)

        Will this pass emissions in Ontario Canada?

        • You will need to check with your local emission regulations to ensure this is legal for use upon highway. If you are not sure where to look, we recommend contacting your local department of transportation and theycan point you in the right direction. 

        Helpful (0)

        Hi will these h pipes pass the emmision/smog test in California?

        • No, this BBK Catted H-Pipe is not legal for use in emission restrictive states such as California.

        Helpful (0)

        Does your car still throw engine codes with these?

        • Your vehicle should not throw any CEL codes when this is properly installed.

        Helpful (0)
        Post Your Question
        2 More Questions
        Will it fit a manual trans? 1 answer
        Shorty? Which one is this good for the bbk shorty equal or unequal or for both? 2 answers

          Customer Reviews (12) Write a Review

          Overall Rating 4.8

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Loudness / Volume 4.416667 4.4
          • Exhaust Note 4.583333 4.6
          • Fit & Finish 4.416667 4.4
          • Bang For Your Buck 4.333333 4.3

          • 5/5

            November 09, 2018

            BBK chatted h-pipe

            I've removed and replaced numerous 1 piece h-pipes on Mustangs over the years. This was the first 3 piece BBK one that I've installed. It was very easy. Thank you BBK engineers. I would definitely recommend this h-pipe.


            Year: 1987 Submodel: LX

            Helpful (4)

          • 5/5

            Installation Time: Full Day

            August 16, 2017

            Great product

            Replace all of my exhaust from headers to the tailpipes these bbk cats fit great .Love how they come in 4 pieces so you can adjust them to fit your headers ,just wish they would come with the 02 sensors.


            Year: 1989 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            July 15, 2017

            Great Product

            This catted h-pipe is great for replacing that old 4 catted stock setup and gives better flow for my 5.0


            Year: 1986 Submodel: Other

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            January 27, 2017

            Awesome pipe

            BBK is the best when it comes to exhaust. This came with loads of hardware and everything about the pipe is great. There are two parts (one is just a pipe from header to cats) which I'm pretty sure allows it to work for long and shorty headers. I have shorty BBK and the sound is great! easy install just make sure to jack your pipe up and tighten everything down!


            Year: 1993 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            February 13, 2015

            BBK catted H-pipe

            Excellent product! I had a local shop install it for me, and they commented on the ease of the installation ( especially since I installed BBK shorty headers with the pipe as well!)


            Year: 1993 Submodel: Other Williamsburg, VA

            Helpful (6)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            August 06, 2014

            BBK catted H pipe

            sounds great replaced original 4 catted unit, sure it will pass state inspection thanks


            Year: 1988 Submodel: GT Bronx, NY, USA

            Helpful (6)

          • 2/5

            Installation Time: Afternoon

            June 08, 2014

            Not welded properly

            After installing I heard an exhaust leak. Racked the car back up and found that the passenger side converter was only tack welded on at the converter inlet. Luckily I was installing it at the shop after work so I just rolled the welder over and fixed it. Didn't get as much reduction in emissions as I normally expect from new cats, but they worked good enough to scrape by the dyno test


            Year: 1992 Submodel: Other Sacramento, CA, USA

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            May 24, 2014

            Excellent sound!

            Great sound and deep rumble when I paired it with Flowmaster American Thunder two-chamber cat-back exhaust.


            Year: 1988 Submodel: GT La Villa, TX, USA

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            August 26, 2013

            Great Product!

            I bought a '92 GT recently to use both as a daily driver and to fix up. I took a risk buying a car that had failed emissions horribly, but it was for a good price. The car had a set of BBK Shorty Headers, and a BBK H-Pipe when I bought it, but I took the H-Pipe off only to discover they had punched holes through the cats. After I installed my new H-Pipe from American Muscle my car went from 3,800 HC to 17 HC at idle! Plus the H-Pipe I pulled off was a one piece so the extensions that went up to the headers were hard to get past the fire wall, and off the hangers. Where this H-Pipe is a two piece, and requires very little effort to install. I would recommend this product to anyone!


            Year: 1992 Submodel: GT Salt Lake City, UT, USA

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            May 21, 2013

            A deeper sound than O/R H pipe

            This catted pipe has a deeper chambered sound to it and I am confident that I will not have a problem passing the emission test.


            Year: 1992 Submodel: Other Philly

            Helpful (7)

          • 5/5

            Installation Time: Afternoon

            November 08, 2012


            Great product and price love this website. Hy have all I need!!!


            Year: 1989 Submodel: Other Manalapan, NJ, USA

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            December 08, 2011


            Well,my Mustang didn't pass the emmission test and I purchased the BBK catted H-pipe and it took me a afternoon to install it with the help of my younger son.The next day I took the car to the emmissions and when they did the text it "PASSED" inmmediatly.I'll recommend this system to anyone who want to pass the emmission test !!!!!!!!!.Very happy with the purchased,"WAY TO GO AMERICAN MUSCLE" !!!!!!!.Jose & Jason(my son)


            Year: 1990 Submodel: Other Gilbert,Arizona

            Helpful (8)

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