Know the landed cost before you order
Prices include VAT. Shipping is charged separately and calculated at checkout for your destination. If no shipping option is shown, contact us for a quote before ordering.
Upgrade your 6.1 HEMI headers and keep the OEM cats
These Kooks Super Street headers give your 6.1-litre HEMI car a stainless header upgrade that connects directly to its factory catalytic converters. The 1-7/8" primaries and D-shaped ports suit the specified LX installation, with gaskets and bolts included.
SKU: 31011400
The direct OEM-cat route
The headers use the stock bolt pattern and flanged collector outlets to the OEM cats. No additional connection parts are required for the specified installation.
Enjoy the upgrade without replacing the whole front system
A tune is not required as supplied. We recommend tuning advice around your complete setup, while the retained OEM-cat connection keeps this a different purchase route from long tube headers and separate pipes.
Fitting your exhaust
The fitting pack includes a dipstick spacer. Installation relocates the dipstick mounting point using this spacer and the longer header bolt.
Tuning for your exhaust upgrade
We recommend tuning with every header installation so the calibration suits your new headers, complete exhaust and fuel. Talk to us to discuss the right tuning route for your vehicle.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2005-2010 | Chrysler 300 C SRT8 | 6.1L V8 | 31011400 | |
| 2008-2010 | Dodge Challenger SRT8 | 6.1L V8 | 31011400 | |
| 2006-2010 | Dodge Charger SRT8 | 6.1L V8 | 31011400 | |
| 2006-2008 | Dodge Magnum SRT8 | 6.1L V8 | 31011400 |
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 | 31011400 |
| Application | Supported LX 6.1L HEMI cars; individual years below |
| Material | 304 stainless steel |
| Primaries | 1-7/8" |
| Head interface | D-shaped ports; stock bolt pattern |
| Outlet | Flanged direct OEM-cat connection |
| Contents | Gaskets and bolt kit; no additional connection parts required |
| Dipstick fitting | Spacer supplied; longer header bolt used for relocation |
Frequently asked questions
Do these need a separate connection-pipe purchase?
They connect directly to the OEM cats in the specified application.
Are fitting gaskets supplied?
Yes. Gaskets and the bolt kit are included.
