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Cobb 3 in. Down Pipe - Rear Section (15-20 EcoBoost w/ Cobb Cat-Back)

Item 390955
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Market Price $302.50 You Save 9% ($27.50)
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    Features & Details

    • Improves Exhaust Flow for More Power
    • Upgrades Cobb 3" to 2.25" Down Pipe to a Full 3" Down Pipe
    • 304 Stainless Steel Construction
    • Free Flowing 3" Diameter Mandrel-Bent Tubing
    • Is NOT CARB Certified
    • Designed for use with the Cobb Down Pipe and Cat-Back Exhaust
    • Fits all 2015-2020 2.3L EcoBoost Mustangs
    Upgrade for More Power. Have you already installed a Cobb 3" to 2.25" Down Pipe (5M2200) to mate up to your factory 2.25" cat-back system and now want to upgrade to Cobb's 3" Cat-Back Exhaust (5M2100)? If so, you are going to need Cobb's 3 in. Rear Section Connecting Pipe. This Rear Section Connecting Pipe upgrades the Cobb 3" to 2.25" Catted Down Pipe to be a full 3" Down Pipe for use with their 3" Cat-Back Exhaust. By creating a full 3" Exhaust System you will see a significant improvement in horse power, torque and engine response across the entire power band.

    High Quality Construction. Cobb manufactures their Rear Section Connecting Pipe from high quality T304 stainless steel for superior strength and long lasting corrosion resistance. Fabricated from 3" diameter, smooth mandrel bent tubing, this Down Pipe features a flex coupling that allows your turbocharged engine to move freely without bending or cracking the exhaust itself.

    Direct Bolt-On Installation. Cobb engineered their Rear Section Connecting Pipe to be a direct bolt-on upgrade replacement for the rear section of their two piece 3" to 2.25" Catted Down Pipe. There is no cutting or extra modifications required. Installation of this Cobb Connecting Pipe can be completed in about a two hours with just basic hand tools.

    Application. This Cobb 3" Rear Section Connecting Pipe is specifically designed to fit the 2015-2020 EcoBoost Mustangs equipped with the turbocharged 2.3L in-line 4-cylinder engine.

    Please Note. This Rear Section Down Pipe is to be installed with Cobb's 3" to 2.25" Down Pipe (5M2200) and their 3" Cat-Back Exhaust (5M2100).

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# 5M2203

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Rear Section Down Pipe
    Installation Info
    Tech Specs
    Down Pipe Specifications
    Piping Material:304 Stainless SteelPiping Size:3"
    Catalytic Converter:NoFitment:2015-2017 EcoBoost
    Will it fit my Mustang?

      Customer Photos

        Questions & Answers (2)

        2 Top Rated Questions

        Will this down pipe be compatible with my stock catalytic converter down pipe?

        • It is not compatible with the stock down pipe.

        Helpful (0)

        Will this down pipe work with my Roush Axle-Back Exhaust Stainless Steel V6/EcoBoost 2015-2017? Thanks

        • This downpipe is specifically designed to be installed with Cobb's 3" to 2.25" downpipe item #390954 and the Cobb 3" catback exhaust item #390951.

        Helpful (0)
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          Customer Reviews (1) Write a Review

          Overall Rating 4

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Loudness / Volume 4 4
          • Exhaust Note 5 5
          • Fit & Finish 5 5
          • Bang For Your Buck 5 5

          • 4/5

            Installation Time: Less than 1 Hour

            September 14, 2016


            IT sounds so good I was so surprised by the sound and this cobb is actually cheap too the cheapest one i saw actually, definitely worth it.


            Year: 2015 Submodel: Ecoboost

            Helpful (14)

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