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Believe It Kooks Custom Headers 11513300 3in. Ss Green Catted Connnection Pipes. 2015-2020 Mustang Gt 5.0l. Now 70% Cheaper [hWKUYRB2]

$62.99 $201.99 -69%

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best headers and complete exhaust systems for your street, race and off-road applications. We have

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Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"
Resources
Installation Instructions
Resources
Installation Instructions

Specifications:

Description_ASC 3in. Stainless Steel Catted Front Connection pipes. 2015-2020 Ford Mustang GT 5.0L 4V. 3in. 16GA 304 Stainless Steel construction. Ball and socket style connection to Headers. Kooks GREEN Cats 300 Cell High Flow Catatlytic Converters. Does not Include Clamps. Must be used with Kooks Headers and OEM Adapters or Kooks Connection-Back Exhaust. DOES NOT CONNECT TO OEM EXHAUST. Kooks GREEN Cats are suitable for use with forced induction
Description_ASM 3in. Stainless Steel Catted Front Connection pipes. 2015-2020 Ford Mustang GT 5.0L 4V.
  • 3in. 16GA 304 Stainless Steel construction
  • Ball and socket style connection to Headers
  • KOOKS GREEN Cats 300 Cell High Flow Catatlytic Converters
  • Does not Include Clamps
  • Must be used with KOOKS Headers and OEM Adapters or KOOKS Connection-Back Exhaust
  • DOES NOT CONNECT TO OEM EXHAUST
  • KOOKS GREEN Cats are suitable for use with forced induction
Description_DES 3in. SS GREEN Catted Connnection Pipes. 2015-2020 Mustang GT 5.0L.
Description_EXT 3in. Stainless Steel GREEN Catted Connnection pipes. Connects Kooks Headers to Kooks Exhaust. DOES NOT CONNECT TO OEM EXHAUST
Description_FAB 100 Percent Manufactured In The USA
Description_FAB 3 Generations Being Family Owned And Operated
Description_FAB Every Kooks Product Is Dyno And Race Tested
Description_FAB Kooks Headers And Exhaust Make The Most Power In The Industry
Description_FAB Kooks Products Are Made Of T304 Air Craft Quality Steel
Description_FAB Kooks Products Fit And Install The Best
Description_FAB Kooks System Are Specifically Designed For Maximum Power
Description_FAB Limited Lifetime Warranty To Original Purchaser
Description_INV 3in. Stainless GREEN Catted Conn. Pipes.
Description_LAB Proposition 65
Description_MKT Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"
Description_SHO 3in. Connection
Description_SLA 3in. Stainless Steel Catted Front Connection pipes. 2015-2020 Ford Mustang GT 5.0L 4V. 3in. 16GA 304 Stainless Steel construction. Ball and socket style connection to Headers. Kooks GREEN Cats 300 Cell High Flow Catatlytic Converters. Does not Include Clamps. Must be used with Kooks Headers and OEM Adapters or Kooks Connection-Back Exhaust. DOES NOT CONNECT TO OEM EXHAUST. Kooks GREEN Cats are suitable for use with forced induction
height 14.0
Inlet Inside Diameter 3.000 in.
length 32.0
Material Stainless Steel
Pipe Material Stainless Steel
Tube Diameter 3.000 in.
WARNING CA Proposition 65 Yes
WARNING CA Proposition 65 Message WARNING: This product can expose you to chemicals including Chromium and Nickel; which are known to the State of California to cause cancer; birth defects or reproductive harm. For more information go to www.p65warnings.ca.gov
weight 19.0
width 20.0

What Our Customers Say

January 1, 2026

Absolutely no complaints!

This item is a clear standout.

- Quincy B..

January 1, 2026

Absolutely no complaints!

It’s a very handy and clever gadget.

- Culhwch V..

January 1, 2026

Absolutely no complaints!

An excellent gadget. Very solid.

- Carwyn O..

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