Kooks Headers Stage 8 Header Bolt Kit

2005–2024 Chrysler, Dodge, Jeep & Ram HEMI 5.7L / 6.1L / 6.2L / 6.4L

Part #: BK111

Overview

The Kooks Headers Stage 8 Header Bolt Kit is a precision-engineered replacement bolt set designed specifically for high-performance Chrysler, Dodge, Jeep, and Ram vehicles equipped with HEMI engines ranging from 5.7L VVT to 6.4L 392 and 6.2L Hellcat variants. This kit is essential for enthusiasts and professional installers who need to replace damaged, lost, or worn header bolts to maintain a secure, leak-free exhaust header installation.

Crafted to meet the rigorous standards of Kooks Headers and Exhaust, this bolt kit ensures reliable fastening that supports optimal exhaust flow and engine performance. Whether restoring your vehicle’s exhaust system or upgrading to Kooks headers, this kit delivers the durability and fitment precision required for a professional-grade installation.

Key Features

Engineered for quality and performance, the Kooks Stage 8 Header Bolt Kit offers:

• Includes 16 M8 - 1.25 x 25mm stainless steel bolts for secure header attachment
• Compatible with a wide range of Chrysler, Dodge, Jeep, and Ram models equipped with HEMI engines
• Manufactured from premium T304 aircraft-quality stainless steel for superior corrosion resistance
• Handcrafted in the USA by Kooks Headers, a leader in high-performance exhaust systems since 1962
• Replacement kit designed to match original hardware specifications for perfect fitment
• Backed by Kooks’ limited lifetime warranty to the original purchaser
• Tested and proven in dyno and race environments for maximum durability and performance
• Stage 8 bolt design optimized to resist loosening from thermal expansion and vibration

Construction & Design

Kooks utilizes premium T304 stainless steel, known for its exceptional strength, heat resistance, and corrosion protection. This ensures the bolts maintain their integrity and appearance even under extreme operating conditions typical of high-performance exhaust systems.

Each bolt is precision-machined to exacting tolerances, guaranteeing a secure fit that maintains proper header alignment and sealing. Manufactured in the USA under strict quality control standards, these bolts uphold Kooks’ reputation for craftsmanship and reliability.

The Stage 8 design specifically addresses the challenges of thermal cycling and vibration, preventing loosening and exhaust leaks over time, which is critical for maintaining peak engine performance and exhaust efficiency.

Installation & Fitment

This bolt kit serves as a direct replacement for the original header bolts on compatible vehicles, requiring no modifications to headers or engine components. Installation is straightforward for anyone familiar with header or exhaust system work. Proper torque specifications must be followed to ensure a secure seal and prevent damage.

Fitment covers a broad range of popular HEMI-powered models, including:

• 2005–2010 Chrysler 300C 6.1L SRT8
• 2006–2008 Dodge Magnum 6.1L SRT8
• 2006–2010 Dodge Charger 6.1L SRT8
• 2008–2010 Dodge Challenger 6.1L SRT8
• 2009–2020 Dodge Charger 5.7L HEMI
• 2009–2024 Chrysler 300 5.7L HEMI
• 2011–2018 Dodge Durango 6.4L 392
• 2011–2018 Jeep Grand Cherokee 5.7L HEMI & 6.1L SRT8
• 2011–2020 Dodge Challenger 5.7L HEMI, 6.2L Hellcat, 6.4L 392
• 2011–2024 Dodge Charger 6.4L 392
• 2011–2020 Ram 1500 5.7L HEMI
• 2015–2018 Jeep Grand Cherokee 6.4L SRT8
• 2015–2020 Dodge Charger 6.2L Hellcat
• 2015–2024 Ram 1500 6.2L TRX
• 2015–2024 Ram 2500 & 3500 5.7L HEMI, 6.4L 392
• 2007–2017 Jeep Wrangler & 2018 Jeep Wrangler JK

What's Included

• 16 x M8 - 1.25 x 25mm stainless steel header bolts

Ideal For

This bolt kit is perfect for automotive enthusiasts, professional mechanics, and racers who require a reliable replacement for lost or damaged header bolts. It is especially suited for those upgrading or maintaining Kooks headers on HEMI-powered Chrysler, Dodge, Jeep, and Ram vehicles, ensuring a secure and durable exhaust system installation that withstands the rigors of performance driving and daily use.

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.