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Stainless Works 1-7/8-Inch Headers with Catted Y-Pipe; Factory Connect (14-18 5.3L Sierra 1500)

Item S500747
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Market Price $2,175.99 You Save 13% ($284.54)
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$1,891.45 (each)

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      Product Information

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


      • Fits to the Factory Connection Point
      • Tube Diameter Ranges from 1-7/8"-3"
      • 304 Stainless Steel Construction
      • TIG-Welded and CNC Mandrel-Bent
      • Thick Laser Cut Flanges
      • Fits 2014-2018 5.3L GMC Sierras
      • Designed for Double Cabs and Crew Cabs


      Add-On to Your Factory Exhaust System. Your GMC Sierra's existing exhaust system gets the job done. However, if you want to see it perform more effectively, you should upgrade it. This Stainless Works 1-7/8 in. Headers w/ Catted Y-Pipe is designed to fit the factory connection point near the catalytic converter on your vehicle. It increases exhaust flow to help your rig perform better.

      Enhance Your Exhaust Flow. To increase your exhaust flow, this system boasts primary tubes that are 1-7/8 inch in diameter and 3-inch diameter lead pipes. These pipes are CNC mandrel-bent for smooth flow and TIG-welded for seamless exhaust movement.

      Rely on Sturdy Construction. 3/8-inch thick laser-cut flanges offer strong support to the system. Made of 304 stainless steel, the parts in this system are sturdy and able to withstand the trials of off-roading effectively.

      Application. This Stainless Works 1-7/8 in. Factory Connect Headers with a Catted Y-Pipe is designed to be used on the 2014-2018 5.3L GMC Sierra's with the following cab and box configurations.
      • Double Cab with the Standard Box
      • Crew Cab with the Short Box
      • Crew Cab with the Standard Box
      Technical Note. This Stainless Works product is not legal for use in California or other states adopting California Emission Standards.

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      Stainless Works CT14HCATY

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Stainless Works 1-7/8 in. Headers w/ Catted Y-Pipe
      • Hardware for Installation

      Customer Reviews (11)

        Questions & Answers

        10 More Questions

        Will It Fit My Sierra 1500

        • 5.3L V8 - 14, 15, 16, 17, 18

        Designed for the Double Cab with the Standard Box or Crew Cab with the Short or Standard Box.

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