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Exhaust› Headers, Manifolds and Components

Kooks 1-7/8

1 7/8" x 3" Long Tube Headers with Standard Race Cats

$1,396.45 $1,256.80 Save $139.65

SKU: 11412400

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Kooks 1 7/8" x 3" Long Tube Headers are designed for the Ford Mustang GT/Boss 302/Laguna Seca 2011-2014. Constructed from premium 18-gauge steel or T304 stainless, these headers feature 3/8" flanges, hand-ground ports, and a scavenging spike for enhanced flow. They are dyno and race tested to maximize power.

These headers must be used with Kooks X-Pipe or H-Pipe. Gaskets and all installation hardware are included. Standard race cats are included, but these products are not for use in forced induction applications and are not legal for sale or use in California.
Show original supplier description
The Kooks 1 7/8" x 3" Long Tube Headers are precision-crafted for the 2011-2014 Ford Mustang GT, Boss 302, and Laguna Seca models equipped with the Coyote 5.0L engine. Built by hand in the USA from premium 18-gauge steel or T304 stainless steel, these headers are designed to significantly boost performance. Each header features robust 3/8" thick laser-cut flanges that resist warping, hand-ground ports to minimize turbulence, and a Kooks scavenging spike engineered to enhance exhaust flow and maximize power output. Installation requires the use of Kooks X-Pipe or H-Pipe and includes all necessary gaskets and hardware. The headers are equipped with standard race cats. However, it is important to note that these products are not street legal in California and do not meet CARB compliance. Additionally, they are not intended for use in forced induction applications. Kooks Headers are dyno and race tested, with reported gains of over 60 horsepower and 50 foot-pounds of torque to the rear tires. With over 50 years of experience in the high-performance exhaust industry, Kooks products are backed by a limited lifetime warranty to the original purchaser. Professional installation is recommended due to the mechanical expertise required.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandKooks 1-7/8
Part Number11412400
CategoryExhaust
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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