Kooks Long Tube Headers & Mid Pipes
18-25 Dodge Durango 6.4L SRT & 6.2L Hellcat
3410H421 / 3410H621 / 3410H431 / 3410H631 / 3410H641
Kooks Long Tube Headers & Mid Pipes are engineered for high-performance 6.4L SRT and 6.2L Hellcat vehicles to maximize horsepower, torque, and exhaust flow. Crafted from 304 stainless steel, the headers feature 1-7/8" or 2" primaries, TIG-welded, mandrel-bent construction, blended flanges, venturi merge spikes, and welded O2 bungs. These long tube headers provide improved scavenging, reduced collector turbulence, and a powerful, aggressive exhaust tone. Paired with Kooks 3" catted mid-pipes—available in standard, GREEN, or HIGH OUTPUT GREEN options—this system delivers optimal exhaust performance. All headers include O2 extension harnesses and complete installation hardware. Designed to bolt directly to the factory exhaust via Kooks connection pipes. Enhances throttle response, performance, and engine sound. Not compatible with California-licensed vehicles; not CARB compliant.
- 304 stainless steel construction, TIG-welded and mandrel-bent
- 1-7/8" or 2" primaries with 3" collectors
- Integrated venturi merge spike for optimized exhaust scavenging
- Pre-welded O2 bungs; includes O2 extension harnesses
- TIG-welded, continuous tube primaries for durability
- Connection pipes required to interface with stock exhaust
- Mid-pipe options: 3" standard catted, GREEN catted, or HIGH OUTPUT GREEN
- EPA-certified GREENCATS for 49-state legality (GREEN option)
- Increases horsepower, torque, and throttle response
- Produces aggressive, high-performance exhaust tone
- Designed for 6.2L Hellcat & 6.4L SRT vehicles
- Not legal for sale, installation, or use in California; not CARB compliant
Kooks Headers & Exhaust is a heritage performance exhaust manufacturer best known for high-quality stainless steel headers and complete exhaust systems. Built for serious street and track builds, Kooks products focus on fitment, durability, and the kind of airflow improvements enthusiasts chase when stepping up power.
Kooks Long Tube Headers & Mid Pipes: Jeep Grand Cherokee SRT & Trackhawk 2012 - 2021
- Unit price
- /per
What does the Available to Promise date mean?
ETA stands for Estimated Time of Arrival. The date shown is calculated using our Available-to-Promise (ATP) system, which tracks real-time supplier commitments to determine when a product is expected to be available for delivery. Specifically, the date is calculated by adding 9 business days from the date a supplier has committed to ship the product, representing a worst-case scenario for when we can expect to receive inventory.
Please note: The ETA is an estimate, not a guarantee. While we work closely with our suppliers to keep dates as accurate as possible, delays due to shipping carriers, weather, customs, or supplier-side issues may occasionally push the actual arrival beyond the date shown. Likewise, inventory may arrive sooner than the ETA in many cases. If you would like to be notified for when this item arrives, sign up for our back in stock notifications!
3410H431 / 3410H421 / 3410H621 / 3410H631 / 3410H641 Kooks 18-25 Dodge Durango 6.4L SRT & 6.2L Hellcat Long Tube Headers & Mid Pipes. Kooks Long Tube Headers & Mid Pipes boost power and performance for 6.4L SRT and 6.2L Hellcat vehicles. Constructed from 304 stainless steel, headers feature 1-7/8" or 2" primaries with TIG welding, mandrel bends, O2 bungs, and 3" collectors. Paired with high-flow, GREEN, or standard catted mid-pipes for maximum exhaust efficiency. Not CARB compliant.
FREE GROUND SHIPPING
MADE IN THE USA
Adding product to your cart
Kooks Long Tube Headers & Mid Pipes
18-25 Dodge Durango 6.4L SRT & 6.2L Hellcat
3410H421 / 3410H621 / 3410H431 / 3410H631 / 3410H641
Kooks Long Tube Headers & Mid Pipes are engineered for high-performance 6.4L SRT and 6.2L Hellcat vehicles to maximize horsepower, torque, and exhaust flow. Crafted from 304 stainless steel, the headers feature 1-7/8" or 2" primaries, TIG-welded, mandrel-bent construction, blended flanges, venturi merge spikes, and welded O2 bungs. These long tube headers provide improved scavenging, reduced collector turbulence, and a powerful, aggressive exhaust tone. Paired with Kooks 3" catted mid-pipes—available in standard, GREEN, or HIGH OUTPUT GREEN options—this system delivers optimal exhaust performance. All headers include O2 extension harnesses and complete installation hardware. Designed to bolt directly to the factory exhaust via Kooks connection pipes. Enhances throttle response, performance, and engine sound. Not compatible with California-licensed vehicles; not CARB compliant.
- 304 stainless steel construction, TIG-welded and mandrel-bent
- 1-7/8" or 2" primaries with 3" collectors
- Integrated venturi merge spike for optimized exhaust scavenging
- Pre-welded O2 bungs; includes O2 extension harnesses
- TIG-welded, continuous tube primaries for durability
- Connection pipes required to interface with stock exhaust
- Mid-pipe options: 3" standard catted, GREEN catted, or HIGH OUTPUT GREEN
- EPA-certified GREENCATS for 49-state legality (GREEN option)
- Increases horsepower, torque, and throttle response
- Produces aggressive, high-performance exhaust tone
- Designed for 6.2L Hellcat & 6.4L SRT vehicles
- Not legal for sale, installation, or use in California; not CARB compliant
Kooks Headers & Exhaust is a heritage performance exhaust manufacturer best known for high-quality stainless steel headers and complete exhaust systems. Built for serious street and track builds, Kooks products focus on fitment, durability, and the kind of airflow improvements enthusiasts chase when stepping up power.
-
-
YEARMAKEMODELSUBMODEL2021 - 2025DodgeDurango6.2L Hellcat2018 - 2025DodgeDurango6.4L 3922018 - 2021JeepGrand Cherokee6.2L Trackhawk2015 - 2021JeepGrand Cherokee6.4L SRT2012 - 2014JeepGrand Cherokee6.4L SRT8
-
Standard shipping
Free Standard Shipping on orders over $250. Select “Free Shipping” at checkout.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
-
Standard shipping
Free Standard Shipping on orders over $250. Select “Free Shipping” at checkout.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.