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Cobb 3-Inch Downpipe; Rear Section (15-20 EcoBoost w/ Cobb Cat-Back)

Item 390955
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      Product Information

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


      • 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

      Cobb 5M2203

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Section Down Pipe

      Tech Specs

      Down Pipe Specifications
      Piping Material:304 Stainless SteelPiping Size:3"
      Catalytic Converter:NoFitment:2015-2017 EcoBoost

      Customer Reviews (1)

        Reviews of Cobb Exhaust products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • EcoBoost - 15, 16, 17, 18, 19, 20

          Designed for use with a Cobb 3 in. Down Pipe and Cat-Back Exhaust.

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