Kook's Headers 2-inch stainless headers and H.O. GREEN catalytic converter kit for 2015-2026 Mustang GT/D.H.
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2" Stainless Headers & H.O. GREEN Cat. Conn. Kit. 2015-2026 Mustang GT/D.H.

2015-2026 Mustang GT/Dark Horse 5.0L 4V 2" x 3" Stainless Headers w/High Output GREEN Catted Connection Pipes and OEM Adapters. 304 Stainless Steel Construction 3/8" Thick Laser Cut Flanges 2"...

$3,720.86

In Stock 1 left in stock

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Pickup available at 9750 Conklin Road

Usually ready in 2-4 days

2015-2026 Mustang GT/Dark Horse 5.0L 4V 2" x 3" Stainless Headers w/High Output GREEN Catted Connection Pipes and OEM Adapters.

  • 304 Stainless Steel Construction
  • 3/8" Thick Laser Cut Flanges
  • 2" Mandrel Bent Primaries
  • 3" Collectors with Kooks' Patented Scavenging Spike
  • Dual Bolt Pattern Header Flange
  • Kooks High Output GREEN Cats EPA verified 300 Cell High Flow Catalytic Converters
  • Kooks High Output GREEN Cats are engineered to perform in Modern Muscle cars making more than 750 RWHP
  • Includes Gaskets, Oxygen Sensor Extension Harness, Clamps and Bolt Kit required for Installation
  • No additional parts required.


  • 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!"



Manufactured In The USA. Kooks Uses T304 Aircraft Quality Stainless Steel. Kooks Products are Backed by a Limited Lifetime Warranty To the Original Purchaser. Kooks Products Are Dyno And Race Tested and Designed For Maximum Power.

Shipping costs and lead times can vary, use the contact form below to confirm order cost and time frame.

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. 

To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
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