2015-18 Mustang Kooks Longtube Headers - 1-7/8" Catted Extensions 5.0 by Kooks

Details   |  Description
  • Kooks Mustang Longtube Headers - 1-7/8" (2015) Catted Extensions 5.0 1151H420
  • Kooks Mustang Longtube Headers - 1-7/8" (2015) Catted Extensions 5.0 1151H420
Kooks Mustang Longtube Headers - 1-7/8" (2015) Catted Extensions 5.0 1151H420
  • Kooks Mustang Longtube Headers - 1-7/8" (2015) Catted Extensions 5.0 1151H420
  • Kooks Mustang Longtube Headers - 1-7/8" (2015) Catted Extensions 5.0 1151H420

Get your exhaust flowing more efficiently with this 2015-2018 Mustang GT Kooks longtube header kit!

Item #KOK-1151H420
MPN# 1151H421

Your Price: $1,804.74

Market Price:$2,005.27
You Save 10.00 % ($200.53)

  Ships by Tuesday, July 24

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  • Increased Horsepower
  • Throaty Exhaust Tone
  • Improved Exhaust Flow
  • Made In The USA


  • 1-7/8" Primary Tubes
  • Off-Road OEM Connection
  • 304 Stainless Steel Tubing
  • Includes O2 Bungs

What's in the Box

  • (2) 1-7/8" Longtube Headers
  • (2) Catted Extensions

Made in the USA

Product Description

Kooks 1-7/8" Long Tubes
Add horsepower and torque that pairs with the throaty exhaust note to your 2015-2018 Mustang 5.0 with a set of Kooks 1-7/8" headers. These Kooks long tube headers for your S550 features 304 stainless steel tubing, 1 7/8" primaries, and 3" collectors with O2 bungs welded in. Kooks builds all of their products to the highest standard, and these are quite possibly the best long tube headers you can buy for your 2015-2018 Mustang! This kit also includes Kooks catted extension pipes which is designed to connect your new Kooks long tube headers to your factory exhaust. Quite simply, there is not a better header on the market!

Why Kooks?
-Kooks is known for building the best high end consumer headers in the world. This header is constructed with the below high end features!
-Tig welded with all 304 (aircraft grade) mandrel bent stainless steel construction
-Integrated venturi merge spike for better savaging and less collector turbulence
-Primaries blended into the flange for better flow
-Leak Proof Ball Flange collector for trouble free ownership.
-Each primary tube is one continuous piece of tubing. Some competitors weld several pieces of tubing to create one primary, which is a weaker design.

Installation/Tune Note
-Installation of long tube headers will require custom tune to prevent damage to your vehicle. If you already have a custom tune on your Mustang, please consult with your tuner prior to installation and operating your Mustang.

-Fits 2015-2018 Ford Mustang GT

Kooks Exhaust Warranty - Click Here

-Legal in California only for racing vehicles which may never be used upon a highway.
-It is illegal to remove a properly functioning catalytic converter.
-Not Legal for sale or installation on vehicles operated on public roads in California.

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    Long tubes do make more power and torque versus a shorty header. So why would anybody ever purchase a shorty header? more

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    Posted on 3/31/2015

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    Vehicle Applications

    Ford Mustang - 2015 (15) - 2016 (16) - 2017 (17) - 2018 (18)

    About This Brand

    Kooks - Get Kookin with Kooks
    Kooks Custom headers has been making quality custom headers since 1962. Kooks Headers is a family owned and operated company which has prided itself on making the highest, most horsepower production header and exhaust systems for your Mustang & SVT Lightning. From drag to circle track, road racing, motorcycle, and even offshore boats, Kook’s Headers has helped set records and win races. Some of the biggest and most dominant names in NHRA, ADRL, IHRA, NMCA, NMRA, NASCAR, SCCA, and NASA and continue to run Kook’s headers and win championships.

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