Guaranteed Free Delivery by 12/24! available on most items - Details

Talk to a Mustang Enthusiast
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Early Discounts Revealed! Shop Deals >

Stainless Power 1-7/8-Inch Long Tube Headers; Catted; Aftermarket Connect (15-20 GT w/ SW, MBRP or Corsa Cat-Back)

Item 398213
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Market Price $1,499.14 You Save 12% ($172.46)
Our Price

$1,326.68 (pair)

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Enter Zip
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    or use

      Product Information

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


      • Increases Torque and Horsepower
      • Long Tube Catted Headers Design
      • Includes High Flow Catalytic Converters
      • 3-inch Collector with 1-7/8 inch Primary Tubes
      • Mandrel Bent Tubing
      • Natural Finish with Heavy-duty Steel Construction
      • Two-year Guarantee on Workmanship and Material
      • Not CARB Certified
      • ECU Re-Tune Required
      • Fits All 2015 to 2020 Ford Mustang GT Models with an SW, MBRP or Corsa Cat-Back Exhaust


      More Torque and Horsepower. Looking for improved horsepower delivery and additional torque? The 1-7/8 in. Long Tube Catted Headers come with free flowing mandrel-bent tubing and improved flow catalytic converters that optimize your GT’s exhaust flow and improves scavenging. With the 1-7/8 inch Long Tubed Catted Headers, GT drivers can outstrip their rivals on the street, track or strip. It is designed to be the ideal replacement option for your restrictive factory installed stock exhaust manifolds.

      Improved Flow Catalytic Converters. The high-flow catalytic converter is specially designed to outdo the performance of your GT’s restricting stock catted headers. The Stainless Power 1-7/8 inch Long Tubed Catted Headers deliver improved exhaust flow that boosts your vehicle’s horsepower and provides more torque to the GT’s rear wheel.

      Superior Construction. The Stainless Power 1-7/8 inch Long Tubed Catted Headers are constructed from 304 stainless steel tubing featuring a mandrel-bent measuring 1-7/8 inch diameter. The stainless steel tubing ensures long-term corrosion resistance and improved exhaust flow.

      Requires an ECU Re-Tune. Stainless Power Aftermarket Connect Long Tube Catted Headers require an ECU re-tune to get rid of any “check engine” lights that the wider diameter tubes may cause. An ECU re-tune also ensures your Mustang maximizes the performance capabilities of these headers.

      Not CARB Certified. Stainless Power Aftermarket Connect Long Tube Catted Headers are not CARB-certified at this time and are illegal for use in California or other states that have adopted CARB certification. Please check local laws for permitted applications of these headers.

      Two-Year Guarantee. Stainless Power offers a two-year manufacturer’s warranty on the craftsmanship and materials on all their range of exhaust products including the 1-7/8 inch Long Tubed Catted Headers - Aftermarket Connect as long as it used by the original buyer. However, there may be some exclusions so buyers should refer to the manufacturer’s warranty for further details.

      Application. The Stainless Power 1-7/8 inch Long Tubed Catted Headers is specially designed for 2015-2020 GT Mustangs with a Stainless Works, MBRP or Corsa Cat-Back Exhaust.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      Stainless Power SM15H3CATLG

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Driver Side Header
      • (1) Passenger Side Header
      • (2) Connection Pipes (Driver and Passenger Side)
      • (2) Improved Flow Catalytic Converters
      • (2) O2 Extensions.
      • (4) Clamps

      Tech Specs


      Customer Reviews (43)

        Reviews of Stainless Power Exhaust products have an average rating of 4.8 out of 5

          Questions & Answers

          10 More Questions

          Will It Fit My Mustang

          • Bullitt - 19, 20
          • GT - 15, 16, 17, 18, 19, 20

          Designed to be used with Corsa, MBRP or Stainless Works Factory Connect Cat-Back Exhaust Systems.