ARP Header Bolt Kits

Header Bolt & Stud Kits for Automotive Headers

Part #: 400-1209

Overview

The ARP Header Bolt Kits are specially designed fastener solutions for automotive headers, providing a reliable and durable connection between header components and the exhaust system. Crafted from high-quality stainless steel, these bolts are engineered to withstand the demanding conditions of high-performance engines, including extreme heat and corrosion. Whether you're a professional mechanic, a performance enthusiast, or a DIY builder, these header bolt kits are an essential upgrade to ensure your headers stay secure and perform optimally over time.

Designed with precision and strength in mind, ARP header bolt kits help support the integrity of your exhaust system, reducing the risk of leaks and ensuring consistent performance. Their corrosion-resistant finish makes them ideal for both street and racing applications, where exposure to moisture and high temperatures can compromise standard hardware. Installing these bolts will give you peace of mind, knowing your headers are firmly secured with hardware that exceeds OEM specifications.

Key Features

ARP header bolt kits are built with a focus on strength, durability, and ease of installation. Here are some of the key features that make these fasteners a top choice for performance applications:

• Material: Made from premium stainless steel, these bolts are 15% stronger than traditional Grade 8 steel, providing increased resistance to stretching and failure under high stress.
• Design: The compact head design allows for easy installation in tight spaces near headers, where clearance is often limited. The 12-point and hex-style head options provide versatile tool compatibility for different installation scenarios.
• Thread Size: 3/8 in.-16 threads ensure a secure fit and compatibility with most header applications.
• Underhead Length: The 1.000-inch (25 mm) length offers optimal engagement without protruding excessively, maintaining a clean and professional appearance.
• Corrosion & Heat Resistance: Polished finish enhances corrosion resistance, making these bolts suitable for high-temperature environments typical of headers and exhaust manifolds.
• Application: Designed specifically for header installation, these bolts provide a reliable fastening solution that helps prevent leaks and maintain exhaust system integrity.
• Quality Assurance: Manufactured by ARP, a trusted name in high-performance fasteners, ensuring consistent quality and performance.

Construction & Design

The ARP header bolt kits feature a one-piece, precision-machined design crafted from high-grade stainless steel. This material choice ensures excellent strength-to-weight ratio, corrosion resistance, and heat tolerance. The compact head design facilitates installation in confined engine bay spaces, allowing you to access difficult areas with ease. The 12-point head configuration provides increased torque application and reduces the risk of stripping during installation or removal. The polished finish not only enhances aesthetic appeal but also adds an extra layer of protection against rust and corrosion, extending the lifespan of the fasteners.

Installation & Fitment

Installing the ARP Header Bolt Kits is straightforward and designed to be a direct bolt-on upgrade. These bolts are compatible with most standard header applications that use 3/8 in.-16 thread size fasteners. No special tools beyond standard socket wrenches are required. Due to their compact head design, they are especially useful in tight engine bay spaces where clearance is limited. It is recommended to apply a suitable thread lubricant or anti-seize compound during installation to facilitate future removal and prevent galling. Proper torque specifications should be followed to ensure optimal clamping force and sealing.

• Easy bolt-on installation with standard hand tools
• No cutting, drilling, or modifications required
• Suitable for high-performance street and racing applications

What's Included

• Set of ARP stainless steel header bolts with 12-point or hex-style heads
• Matching nuts and washers (if included in the kit)
• Installation instructions and hardware as specified

Ideal For

• Performance enthusiasts upgrading or replacing header hardware
• Professional mechanics seeking reliable, high-strength fasteners
• Street and race applications where durability and corrosion resistance are critical
• Anyone looking to prevent header leaks and ensure long-term exhaust system integrity