Kooks S550 Mustang GT Long Tube Headers 2015+

For the ultimate in Mustang GT V8 normally aspirated performance, you will need to help that engine breathe. And that's doubly true when you have gone for forced induction like a turbo or a supercharger, as the air being pushed INTO the engine needs to get out as fast as it can. That means a quality exhaust system, and that's what Kooks do. Kooks can provide their renowned Long Tube Headers either as part of a complete Kooks Exhaust system, or to add to your existing aftermarket catback, or to add to a factory standard exhaust system. On 2018 + EU Models, the OEM exhaust manifolds include a pre-cat GPF (Gas Particulate Filter) which US cars do NOT have. If you install custom headers you will in effect delete the GPF filters which will throw warning lights in your car's dash and is technically not road legal

You will see bolt-on power gains with these systems, but they are best combined with a Steeda Tune for ultimate performance gains.

Kooks make their systems in a variety of configurations to suit your needs and your budget.
Available in 1 3/4" size - Ideal for normally aspirated Mustangs OR 1 7/8" size ideal for big power cars over 600 hp Forced Induction Mustangs

In order to combine with OEM and other systems (including the Kooks catbacks) these headers have connectors that will work with all the above. However for a true 3" 'All the way' system, you can buy a complete Kooks exhaust system that goes from the headers to the tips, and eliminates the OEM size 2 3/4" connections.

The systems also come with either:

1. Kooks High Flow 300 Cell cats - our recommended standard choice for normally aspirated street cars
2. Green Super High Quality 300 Cell cats - our recommendation for high power cars or for cars that will see the track,

Kooks Header systems come with:
1 3/4" OR 1 7/8" x 3" Stainless Steel Long Tube Headers
Includes Kooks Catted / Green catted Connection Pipes
O2 extensions,
Gaskets,
All installation hardware included

Size Guide Tip: If you think you will fit a forced induction system later (or already have one!) then choose 1 7/8" system. If you are staying NA under 600 hp, then the 1 3/4" system is perfect for you. Unless the power is high enough to benefit from the larger size, you will actually benefit LESS with the 1 7/8" system as you will not see optimal torque gains. Bigger is not always better!

Part no:
1151H221 : 1 3/4" Kooks Cat
1151H231 : 1 3/4" GREEN Cat
1151H421 : 1 7/8" Kooks Cat
1151H431 : 1 7/8" GREEN Cat

Notes:
1. Kooks Headers special order from the supplier, expect lead times of around 8 weeks. Please contact us for the latest availability.
2. On 2018 + EU Models, the OEM exhaust manifolds include a pre-cat GPF (Gas Particulate Filter) which US cars do NOT have. If you install custom headers you will in effect delete the GPF filters which will throw warning lights in your car's dash and is technically not road legal. Steeda Tunes do NOT support custom tuning to enable GPF delete.
3. RHD headers also available on request.
4. Kooks no longer offer DECAT headers
5. This Product does not qualify for the free shipping offers due to the weight / size of the item.

Steeda offer a limited lifetime warranty for material and manufacturing defects.

The warranty is for the original purchaser.

WHAT IS NOT COVERED
The following items are not covered under the Limited Warranty:

1. Failure or damage resulting from normal wear and tear, improper installation, repair, abuse, misuse, neglect, negligence, accidents, corrosion, or the alteration or modification of a part by the customer.
2. Failure or damage caused by work not performed by Steeda.
3. Failure or damage caused by a defective part or accessory not installed by Steeda main dealer.
4. Labour for the removal from a vehicle and reinstallation of a part or component sold “over the counter” or “over the internet.”
5. Service adjustments, such as calibration or alignments.
6. Rust or corrosion to parts caused by environmental conditions such as, but not limited to, salt or other caustic chemicals is not covered by Steeda's warranty.
7. Pitting is caused by brake dust, chemical abuse, or lack of maintenance and is not covered by Steeda's warranty.
8. Incidental or consequential damages. 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.

FULL TERMS AND CONDITIONS HERE