Description

Kooks Headers Longtube Headers & Mid Pipes

Fits Most Dodge/Jeep 6.4L/6.2L (12-23)

Part #: 3410H641

The Kooks 1-7/8″ x 3″ Longtube Headers paired with OEM catted mid pipes are precision-engineered exhaust components designed specifically for high-performance 6.4L SRT and 6.2L Trackhawk HEMI engines found in Jeep Grand Cherokee SRT8, Trackhawk, and Dodge Durango SRT 392 models. This complete header and mid pipe system enhances exhaust flow, resulting in improved horsepower, torque, and throttle response while delivering an aggressive exhaust tone that complements the vehicle’s performance character.

Ideal for enthusiasts seeking to maximize their vehicle’s power output and exhaust efficiency, these Kooks headers and mid pipes bolt directly to the factory exhaust system using Kooks connection pipes, ensuring a straightforward installation without the need for extensive modifications.

Key Features

Designed with advanced engineering and quality materials, this system offers:

• 1-7/8″ diameter primaries with 3″ collectors for optimized exhaust flow
• 304 stainless steel construction for superior corrosion resistance and durability
• TIG-welded, mandrel-bent tubing ensuring smooth bends and consistent exhaust scavenging
• Integrated venturi merge spikes to enhance exhaust gas velocity and scavenging efficiency
• Pre-welded O2 sensor bungs with included O2 extension harnesses for accurate sensor placement
• 3″ catted mid pipes available in standard, GREEN, or HIGH OUTPUT GREEN EPA-certified options
• Blended flanges for precise fitment and leak-free sealing
• Compatibility with factory exhaust via Kooks connection pipes for seamless integration
• Engineered specifically for 6.2L Trackhawk and 6.4L SRT engines to maximize performance gains

Construction & Design

Kooks utilizes premium 304 stainless steel for these headers and mid pipes, providing excellent resistance to heat and corrosion, essential for long-term durability in high-performance applications. The headers feature mandrel-bent tubing that maintains consistent diameter through bends, reducing flow restrictions and turbulence. TIG welding ensures strong, precise joints that withstand thermal cycling and vibration. The inclusion of venturi merge spikes at the collector improves exhaust scavenging by promoting efficient gas flow and reducing backpressure.

The mid pipes incorporate OEM catalytic converters with options for standard or EPA-certified GREEN and HIGH OUTPUT GREEN cats, balancing emissions compliance with performance. Flanges are expertly blended to ensure a perfect seal and ease of installation.

Performance & Sound

This Kooks header and mid pipe system significantly enhances exhaust flow dynamics, resulting in noticeable gains in horsepower and torque. The improved scavenging effect leads to better throttle response and engine efficiency. Additionally, the system produces a more aggressive and refined exhaust note that complements the muscular character of the 6.2L and 6.4L HEMI engines without excessive drone.

Installation & Fitment

Designed as a direct bolt-on upgrade, these headers and mid pipes connect seamlessly to the factory exhaust system using Kooks connection pipes, minimizing installation complexity. The kit includes O2 sensor extension harnesses to accommodate sensor positioning. Professional installation is recommended to ensure proper fitment and optimal performance. No major modifications to the vehicle’s exhaust or engine bay are required.

What’s Included

• 1-7/8″ Longtube headers with 3″ collectors
• 3″ OEM catted mid pipes (standard, GREEN, or HIGH OUTPUT GREEN options)
• O2 sensor extension harnesses
• Complete installation hardware
• Kooks connection pipes for factory exhaust integration

Ideal For

This system is perfect for Jeep Grand Cherokee SRT8 and Trackhawk owners, as well as Dodge Durango SRT 392 enthusiasts, who want to unlock additional power and torque from their factory 6.2L or 6.4L HEMI engines. It suits drivers seeking a high-quality, durable exhaust upgrade that improves performance and delivers an aggressive exhaust tone without sacrificing emissions compliance outside California.

Emissions Note

These headers and mid pipes are not CARB compliant and are not legal for sale, installation, or use in California. The GREEN and HIGH OUTPUT GREEN mid pipe options are EPA-certified for 49-state legality, providing emissions-compliant choices for most regions.