Kooks Headers 1-7/8 x 3in Catted Header and Connection Kit
2011–2023 Dodge Durango / 2011–2023 Jeep Grand Cherokee / 2021–2022 Jeep Grand Cherokee L
3610H421
Overview:
The Kooks Headers 1-7/8 x 3in Catted Header and Connection Kit is engineered to elevate the performance and sound of your Dodge Durango, Jeep Grand Cherokee, or Jeep Grand Cherokee L. Designed for enthusiasts who demand superior exhaust flow and durability, this kit replaces restrictive factory components with high-quality long tube headers and catted connection pipes. Whether you're upgrading for street driving, off-road adventures, or competitive racing, Kooks delivers proven performance enhancements backed by decades of motorsports experience.
Trusted for over 50 years, Kooks Headers and Exhaust has established itself as a leader in high-performance exhaust systems. This kit is handcrafted in the USA and built to provide maximum power gains while maintaining emissions compliance through integrated catalytic converters.
Key Features:
Designed for precision fitment and long-lasting performance, this header and connection kit offers the following key features:
- 1-7/8 inch primary tube diameter with 3 inch collector for optimal exhaust flow
- Includes stainless steel long tube headers and OEM-style 3 inch stainless catted connection pipes
- Constructed from T304 aircraft-quality stainless steel for superior corrosion resistance and strength
- Handcrafted in the USA with meticulous attention to detail and quality control
- Dyno and race tested to ensure maximum power output and reliability
- Limited lifetime warranty to the original purchaser for peace of mind
- Direct bolt-on fitment for select Dodge Durango and Jeep Grand Cherokee models from 2011 through 2023
- Maintains factory-like emissions compliance with integrated catalytic converters
- Designed to improve throttle response, horsepower, and torque across the powerband
Construction & Design:
Kooks utilizes premium T304 stainless steel, known for its exceptional durability and resistance to heat and corrosion. Each header is handcrafted in the USA by skilled technicians, ensuring precise welds and consistent quality. The 1-7/8 inch primary tubes are engineered to optimize exhaust scavenging, while the 3 inch collectors and catted connection pipes maintain smooth exhaust flow and emissions compliance. This combination results in a robust, long-lasting exhaust solution that withstands the rigors of daily driving and high-performance use.
Performance & Sound
By replacing restrictive factory manifolds with long tube headers, this Kooks kit significantly enhances exhaust flow, reducing backpressure and improving engine efficiency. The result is noticeable gains in horsepower and torque, especially in the mid to high RPM range. Additionally, the headers deliver a deeper, more aggressive exhaust note that enhances the driving experience without excessive drone. The integrated catalytic converters ensure that performance improvements do not come at the expense of emissions compliance.
Installation & Fitment:
This header and connection kit is designed for direct bolt-on installation on compatible Dodge Durango and Jeep Grand Cherokee models from 2011 to 2023, including the Grand Cherokee L from 2021 to 2022. Installation typically requires standard hand tools and moderate mechanical knowledge. No major modifications or cutting are necessary, preserving the integrity of your vehicle’s exhaust system. Professional installation is recommended to ensure proper fitment and optimal performance.
What's Included:
- 1-7/8 inch x 3 inch stainless steel long tube headers
- 3 inch stainless steel OEM-style catted connection pipes
- All necessary gaskets and hardware for installation
- Detailed installation instructions
Ideal For:
This Kooks header and connection kit is ideal for Dodge Durango and Jeep Grand Cherokee owners seeking 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 that deliver proven results. Perfect for those who want a handcrafted, American-made product backed by decades of racing heritage.
