Part #: 3610H421
The Kooks Headers 1.875" Longtube Headers & OEM Catted Mid Pipes kit is a premium exhaust upgrade designed specifically for the 2011 through 2023 Dodge Durango and Jeep Grand Cherokee equipped with the 5.7L VVT HEMI engine. This complete header and connection pipe system replaces the factory exhaust manifolds and mid pipes with high-flow long tube headers and integrated catalytic converters, enhancing exhaust flow and engine efficiency.
Engineered for enthusiasts seeking improved throttle response, increased horsepower, and a more aggressive exhaust tone, this kit offers a direct bolt-on solution that maintains emissions compliance. Whether for spirited street driving, off-road performance, or track use, Kooks delivers a durable, race-proven exhaust upgrade handcrafted in the USA.
This Kooks header and connection kit combines precision engineering with quality materials to deliver reliable performance gains and long-term durability:
Kooks utilizes T304 stainless steel, renowned for its exceptional durability, heat resistance, and corrosion protection, ensuring these headers withstand the rigors of daily driving and high-performance use. Each header is handcrafted in the USA by skilled technicians, guaranteeing precise welds and consistent quality control.
The 1-7/8 inch primary tubes are engineered to optimize exhaust gas scavenging, improving engine breathing and efficiency. The 3 inch collectors and OEM-style catted connection pipes maintain smooth exhaust flow while integrating catalytic converters to meet emissions standards. This thoughtful design balances performance gains with environmental responsibility.
Replacing the restrictive factory manifolds with long tube headers significantly reduces exhaust backpressure, resulting in improved horsepower and torque, particularly in the mid to high RPM range. Drivers will notice enhanced throttle response and a deeper, more aggressive exhaust note that enriches the driving experience without excessive drone or harshness.
The integrated catalytic converters ensure that these performance improvements do not compromise emissions compliance, making this kit suitable for street-driven vehicles as well as off-road and racing applications.
This Kooks header and connection kit is designed for direct bolt-on installation on compatible 2011–2023 Dodge Durango and Jeep Grand Cherokee 5.7L HEMI models, including the 2021–2022 Grand Cherokee L. Installation requires standard hand tools and moderate mechanical knowledge, with no major modifications or cutting necessary, preserving the integrity of your vehicle’s exhaust system.
Professional installation is recommended to ensure proper fitment and to maximize performance benefits.
This Kooks header and connection kit is ideal for Dodge Durango and Jeep Grand Cherokee owners who want to upgrade their exhaust system for enhanced power, improved throttle response, and a more aggressive exhaust tone. It suits street performance enthusiasts, off-road adventurers, and racers who demand reliable, high-quality components backed by decades of racing heritage and American craftsmanship.
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.
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!
Kooks Headers 3610H421 Dodge Durango / Jeep Grand Cherokee 11-26 5.7L Hemi Kooks 1.875" Longtube Headers & OEM Catted Mid Pipes. Upgrade your exhaust flow with these 1.875" long tube headers and 3" catted connection pipes, crafted from T304 stainless steel for durability and corrosion resistance. Designed for direct bolt-on fitment, this kit enhances horsepower, torque, and throttle response while maintaining emissions compliance. Handcrafted in the USA, it delivers a deeper, aggressive exhaust tone without excessive drone, perfect for street, off-road, or racing enthusiasts seeking reliable, high-performance exhaust upgrades.
FREE GROUND SHIPPING
MADE IN THE USA
Adding product to your cart
Part #: 3610H421
The Kooks Headers 1.875" Longtube Headers & OEM Catted Mid Pipes kit is a premium exhaust upgrade designed specifically for the 2011 through 2023 Dodge Durango and Jeep Grand Cherokee equipped with the 5.7L VVT HEMI engine. This complete header and connection pipe system replaces the factory exhaust manifolds and mid pipes with high-flow long tube headers and integrated catalytic converters, enhancing exhaust flow and engine efficiency.
Engineered for enthusiasts seeking improved throttle response, increased horsepower, and a more aggressive exhaust tone, this kit offers a direct bolt-on solution that maintains emissions compliance. Whether for spirited street driving, off-road performance, or track use, Kooks delivers a durable, race-proven exhaust upgrade handcrafted in the USA.
This Kooks header and connection kit combines precision engineering with quality materials to deliver reliable performance gains and long-term durability:
Kooks utilizes T304 stainless steel, renowned for its exceptional durability, heat resistance, and corrosion protection, ensuring these headers withstand the rigors of daily driving and high-performance use. Each header is handcrafted in the USA by skilled technicians, guaranteeing precise welds and consistent quality control.
The 1-7/8 inch primary tubes are engineered to optimize exhaust gas scavenging, improving engine breathing and efficiency. The 3 inch collectors and OEM-style catted connection pipes maintain smooth exhaust flow while integrating catalytic converters to meet emissions standards. This thoughtful design balances performance gains with environmental responsibility.
Replacing the restrictive factory manifolds with long tube headers significantly reduces exhaust backpressure, resulting in improved horsepower and torque, particularly in the mid to high RPM range. Drivers will notice enhanced throttle response and a deeper, more aggressive exhaust note that enriches the driving experience without excessive drone or harshness.
The integrated catalytic converters ensure that these performance improvements do not compromise emissions compliance, making this kit suitable for street-driven vehicles as well as off-road and racing applications.
This Kooks header and connection kit is designed for direct bolt-on installation on compatible 2011–2023 Dodge Durango and Jeep Grand Cherokee 5.7L HEMI models, including the 2021–2022 Grand Cherokee L. Installation requires standard hand tools and moderate mechanical knowledge, with no major modifications or cutting necessary, preserving the integrity of your vehicle’s exhaust system.
Professional installation is recommended to ensure proper fitment and to maximize performance benefits.
This Kooks header and connection kit is ideal for Dodge Durango and Jeep Grand Cherokee owners who want to upgrade their exhaust system for enhanced power, improved throttle response, and a more aggressive exhaust tone. It suits street performance enthusiasts, off-road adventurers, and racers who demand reliable, high-quality components backed by decades of racing heritage and American craftsmanship.
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.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
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.
Free Standard Shipping on orders over $300. Select “Free Shipping” at checkout. *Exclusions apply on oversized and freight items.
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.
