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Kooks Mustang Long Tube Headers - 1 7/8" - 11-14 GT/Boss

Our Price $1,009.53
Market Price $1,049.44  
You save $39.91 (4%)

Manufacturer  Kooks Exhaust

515-6041-188
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  • Product Description
  • Installation Info
  • Mustang Fitment

Kooks Custom Headers set the standard for the header and exhaust industry. Kooks kits come with everything you need to complete the install, even O2 extensions and high quality Percy's gaskets. All of Kook's products are hand made in the USA using premium stainless steel.

515-6041-175 - Kooks 1 3/4" Longtube Headers

1 3/4" x 3". Comes with Gaskets and Bolts. Requires Kooks X-pipe or H-Pipe to be a direct bolt together system

515-6041-188 - Kooks 1 7/8th" Longtube Headers

1 7/8" x 3". Comes with Gaskets and Bolts. Requires Kooks X-pipe or H-Pipe to be a direct bolt together system.

515-6042-CATH - Kooks Catted H-Pipe

Unit is 3" x 2 3/4" with an OEM Style Outlet. Comes with High Flow Catalyst Race Convertors and is made out of 304 Aircraft Quality Stainless Steel. This H-Pipe is designed to be used with either 1 3/4" x 3" or 1 7/8" x 3" Kooks Longutbe Headers.

515-6042-CATX - Kooks Catted X-Pipe

Unit is 3" x 2 3/4" with an OEM Style Outlet. Comes with High Flow Catalyst Race Convertors and is made out of 304 Aircraft Quality Stainless Steel. This X-Pipe is designed to be used with either 1 3/4" x 3" or 1 7/8" x 3" Kooks Longutbe Headers.

Warning: This part has been designed and is intended for off-road application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations.

Product Benefits

  • Increased horsepower and torque
  • Great sound and fitment
  • Made from high-quality stainless steel in the USA

Note: Federal and several state and provincial laws prohibit the removal, modification or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. Steeda Autosports assumes no liability for any violations arising out of any federal, state or provincial emissions or safety requirements on motor vehicles arising out of the customer’s modifications and/or use of Steeda products. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws.

This limited warranty is the only express warranty applicable to Steeda Autosports products. Other rights may arise or vary from state to state in the United States. Steeda is not responsible for any time for which you may lose the use of your vehicle, any inconvenience you might be caused, the loss of your transportation or any part thereof, or any other incidental or consequential damages you may have.

Time to Install
About 6 Hours
Level of Difficulty
Tech Recommended
Tools Needed
Basic Tools
Model Year(s)
2014 2013 2012 2011

Model(s)
GT Boss

Transmission(s)
Manual Automatic

Product Reviews

Took a while to get them installed but it was worth it. Sound great and look nice to boot.