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Stainless Works 1-7/8-Inch Headers with Catted Y-Pipe; Factory Connect (15-20 5.0L F-150)

Item T528444
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      Review & Installation Video

      Product Information

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


      • Increases Horsepower and Torque
      • Long Tube Header Design
      • Free Flowing 1-7/8" Mandrel-Bent Tubing
      • Stainless Steel Construction - Natural Finish
      • Matching High-Flow Catalytic Converters and Y-Pipe Included
      • Intended for Off-Road, Track Use Only
      • Designed and Manufactured in the USA
      • Limited Lifetime Warranty
      • Installs with your Existing Factory Cat-Back System
      • Fits 2015-2020 5.0L F-150s
      • Designed for SuperCabs with a 6.5 ft. Bed & SuperCrews with a 5.5 ft. or 6.5 ft. Bed


      More Horsepower And Torque. Are you looking to improve the power and performance of your 5.0L SuperCab or SuperCrew F-150? If so, then consider Stainless Works' Factory Connect 1-7/8" Long Tube Headers with Catted Y-Pipe. Stainless Works engineered their Long Tube Headers, High Flow Cats and Y-Pipe to all work together to improve the exhaust flow of your Coyote powered F-150. By uncorking your F-150's restrictive factory exhaust system you will see a dramatic increase in horse power and torque throughout the entire RPM range. This Stainless Works' Factory Connect system is designed to bolt up directly your F-150's existing stock Cat-Back exhaust, so there are no extra parts to buy.

      High Flow Catalytic Converters. Stainless Work's high flowing catalytic converters are engineered to outperform the restrictive stock cats. The included high flow catalytic converters provide a significant increase in exhaust flow for a measured improvement in horsepower and torque at the rear wheels.

      Superior Construction. Stainless Works proudly manufactures their Exhaust Systems right here in the USA. Stainless Works Long Tube Headers are CNC mandrel bent from 1-7/8" diameter, 304 stainless steel tubing for superior exhaust flow and long lasting corrosion resistance. These Long Tube Headers feature TIG welded construction, as well as laser cut 3/8" header flanges for additional strength and leak-free performance. The Headers merge into a 3" collector with merge spikes to optimizes scavenging.

      Limited Lifetime Warranty. Stainless Works is so confident in the quality of their exhaust systems that they are backed by a Lifetime Limited Warranty on materials and workmanship.

      Recommended Upgrade. AmericanMuscle highly recommends a custom tune with a Handheld Tuner when installing these Headers. By reprogramming the vehicles computer (ECU) you will get the best possible power and performance gains that these Stainless Works Long Tube Headers have to offer.

      Application. This Stainless Works Factory Connect Long Tube Header and Catted Y-Pipe combo kit is specifically designed to fit the 2WD and 4WD 2015-2020 5.0L F-150s with the following cab and bed sizes. 

      • SuperCab with the 6.5 ft. Bed
      • SuperCrew with the 5.5 ft. Bed
      • SuperCrew with the 6.5 ft. Bed
      Technical Note. This Stainless Works product is not legal for use in California or any other state adopting California emission standards.

      Shop All Truck Parts And Accessories

      Shop All Truck Exhaust

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      Fitment: 2015 2016 2017 2018 2019 2020 Details

      Stainless Works FT18HCATY

      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
      • (1) Driver Side Catted Lead Pipe
      • (1) Passenger Side Catted Lead Pipe
      • (1) Y-Pipe
      • Hardware

      Tech Specs

      Exhaust Specifications
      Header Type: Long TubeFinish:Natural
      Type Mid Pipe Required:Y-Pipe - IncludedHeader Piping Size:1-7/8"
      Catalytic Converter:Yes - Intended for Off-Road UseFitment:2015-2017 5.0L SuperCab with a 6.5 ft. Bed
      2015-2017 5.0L SuperCrew with a 5.5ft or 6.5 ft. Bed

      Customer Reviews (3)

      Write a Review

      Ratings Summary

      4.3 out of 5 overall rating from 3 customers

      Installation Time: Full Day

      • March 03, 2020

        5 2015 Lariat - no Installation Time: Weekend


        Added very noticeable power as well as fuel economy when restraining foot you need a lot of patients for this installation its a pan in the rear but overall amazing headers very well welded and made. I could smell the fresh welds when It came out of the box. 100 worth it. But you're getting yourself into at the least 12 hours of work depending on how smooth things go

        Helpful (1)
      • March 07, 2019

        3 2018 XL - DavidS Installation Time: Weekend

        It was a pain

        First off let me say this. The fit and finish was perfect. The disassembly and reassembly was a royal pain. I hated my life lol. Previously to this install I have a Borla s-type system with dual exits on passenger side. The o2 sensor extensions that were sent did not fit my truck, so I had to cut and splice what I needed for the rear o2 sensors. A tune is also required once you’re done. Now I’m looking at finding a quieter muffler because my truck is so loud it could wake the dead. But it sounds like a racecar. If I had to do it over I probably wouldn’t have.

        Helpful (7)
      • July 04, 2017

        5 2015 XLT - GerardoN Installation Time: Afternoon

        really nice headers

        really nice headers. you can feel the difference in the power, but I would recommend you pay someone to put them on for you. I put them on myself but I wish I had just paid someone when it come time to tighten up the bolts lol

        Helpful (33)

      Questions & Answers (13 answers)

      5 Top Rated Questions

      if using the stock exhaust behind these headers, how much louder will the truck be. I want the increased flow just not the increased noise.

      • Since this will keep the truck having cats paired with the stock cat-back this will not make the truck terribly loud but will make it louder than stock.

      Helpful (4)

      Do these headers have to have tune and will truck run okay without tune? I have a tuner but installing now. Waiting on a tune to be wrote and sent email. Thanks

      • The Stainless Works 1-7/8 in. Headers should be installed with a tune, as the O2 sensor locations are revised, which can cause air/fuel ratio issues as well as idle issues.

      Helpful (3)

      Do these headers come with the gaskets and new hardware also?

      • This is meant to be used with your stock Gaskets, and does come with all necessary hardware for installation. Stainless Works recommends the use of Hi-Temp RTV silicon gasket maker as an option to or in conjunction with the use of factory gaskets.

      Helpful (1)

      What tuner is best recommended when installing these headers?

      • We would recommend the MPT tuner or the Unleased tuner. Noth tuners would be ideal for this set up: &

      Helpful (1)

      I had a Borla exhaust installed on my 2015 f150. Would this header system work with my after market exhaust?

      • The Stainless Works 1-7/8 in. Headers wityh Catted Y-Pipe will be compatible with your Borla Exhaust system.

      Helpful (1)
      Post Your Question
      8 More Questions
      Will this work with my flowmaster outlaws? 0 answer
      Will this work well with the roush stage 2 power pac. I know it comes with there tune fore the cold intake and exhaust? 0 answer
      do these headers work with a Roush Active Dual Exhaust System - Same Side Exit for the 15-20 f-150 0 answer
      I know they have a non catted Y-Pipe that is for "off-road" use, is there much of a hp gain or better sound to justify to get the non catted ones instead 1 answer
      I have an edge tuner with an 87 octane tune on my 18 f150, would this tuner work with these headers? 1 answer
      I have the MBRP dual side exit exhaust that exits before my rear tire. Will this work with that system? 1 answer
      Do these headers have to have tune and will truck run okay without tune? 1 answer
      Will these Long Tube headers fit a 4wd F150 or will transfer case get in the way? 1 answer

      Will It Fit My F-150

      • 5.0L V8 - 15, 16, 17, 18, 19, 20

      Fits SuperCab with 6.5' bed or SuperCrew with a 5.5' or 6.5' bed.

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