Know the landed cost before you order
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Bring out the character of your naturally aspirated 6.4 HEMI
Give your SRT a coordinated Kooks front exhaust upgrade with 1-7/8" long tube headers and Performance-catted connections. The 3" pipework joins the OEM rear exhaust, making this a combined header-and-connection purchase for the supported naturally aspirated 6.4-litre Jeep and Durango applications.
SKU: 3410H421
A matched front system for the 6.4
The headers use 3" collectors and the supplied connections have 3" OEM rear outlets. You can keep the rear exhaust that suits your SRT while upgrading the front of the system.
Choose the correct engine application
This Performance-catted package is for naturally aspirated 6.4-litre engines. The fitment table covers Grand Cherokee SRT/SRT8 within 2012-2020 and Durango SRT within 2018-2020. Supercharged Trackhawk and Hellcat applications need an appropriate forced-induction catalyst package.
Tuning for your exhaust upgrade
We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Contact us to discuss the right tuning route for your vehicle.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2018-2020 | Dodge Durango SRT | 6.4L V8 | 3410H421 | |
| 2012-2015 | Jeep Grand Cherokee SRT8 | 6.4L V8 | 3410H421 | |
| 2014-2020 | Jeep Grand Cherokee SRT | 6.4L V8 | 3410H421 |
Intended use
Competition, off-road and track use only. Not for use on public roads.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKU | 3410H421 |
| Engine | 6.4L naturally aspirated HEMI V8 |
| Applications | Grand Cherokee SRT/SRT8 2012-2020; Durango SRT 2018-2020 |
| Material | 304 stainless steel |
| Headers | 1-7/8" primaries; 3" collectors |
| Connections | Performance-catted; 3" OEM rear outlets |
| Catalyst condition | Naturally aspirated only |
Frequently asked questions
Is this the Trackhawk kit?
Choose a forced-induction catalyst package for a supercharged Trackhawk. This Performance-catted kit is for the listed naturally aspirated 6.4 applications.
Are the connections supplied with the headers?
Yes. The Performance-catted front connections are part of 3410H421.
Do you recommend tuning with these headers?
We recommend tuning with every header installation. Talk to us about calibration for your vehicle, exhaust and other modifications.
