ARP Header Bolt Kits

Header Bolt & Stud Kits for Automotive Applications

Part #: 400-1110

Overview

The ARP Header Bolt Kits are precision-engineered fasteners designed specifically for high-performance automotive applications. Crafted from premium stainless steel, these header bolts provide a reliable, durable solution for securing exhaust headers and related components. Whether you're building a race car, restoring a classic, or upgrading your daily driver, these bolts ensure a secure fit and long-lasting performance.

Designed with the enthusiast in mind, ARP's header bolt kits help support increased engine reliability and performance by maintaining optimal header sealing under extreme conditions. Their corrosion-resistant and heat-resistant properties make them ideal for use in high-temperature environments, ensuring your engine bay remains protected and your headers stay securely in place.

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 bolts a top choice for performance-minded builders:

• Material Excellence: Made from high-quality stainless steel, these bolts are 15 percent stronger than traditional Grade 8 steel fasteners, providing increased clamping force and resistance to fatigue.
• Corrosion & Heat Resistance: The polished stainless steel finish offers superior resistance to rust and corrosion, even in the harshest engine bay conditions, while also withstanding high temperatures without losing integrity.
• Compact Head Design: The bolts feature a compact head profile that allows for easy installation in tight spaces, making them suitable for modern engine configurations with limited clearance.
• Versatile Head Styles: Available with 12-point or hex-style heads, these bolts provide flexibility for different installation preferences and tools, ensuring a secure fit with standard sockets.
• Precise Dimensions: With a thread size of 3/8 in.-16 and an underhead length of 1.000 inch (25.00mm), these bolts are engineered for compatibility with a wide range of header applications.
• Heat & Torque Tolerance: Designed to withstand the thermal stresses of high-performance engines, these bolts maintain their clamping force even under extreme heat cycles.
• Enhanced Fastening Reliability: ARP's meticulous manufacturing process ensures consistent quality and torque accuracy, reducing the risk of header leaks or loosening over time.

Construction & Design

The ARP Header Bolt Kits are constructed from stainless steel, which combines strength with corrosion resistance. The bolts feature a compact head design that facilitates installation in confined engine bays, a common challenge when working with performance headers. The polished finish not only enhances aesthetic appeal but also provides an additional layer of protection against rust and heat-related degradation.

Each bolt is precision-machined to exact specifications, ensuring a perfect fit and optimal clamping force. The 12-point and hex head options allow for versatile installation methods, accommodating various socket types and access angles. The durable materials and meticulous craftsmanship make these bolts suitable for both street and race applications, providing peace of mind that your header assembly remains secure under demanding conditions.

Performance & Reliability

By upgrading to ARP Header Bolt Kits, you benefit from improved fastening strength and longevity compared to standard hardware. These bolts help maintain proper header sealing, which is critical for optimal exhaust flow and engine performance. Their heat-resistant properties ensure they won't soften or loosen during high-temperature operation, supporting consistent performance and reducing maintenance concerns.

Installation & Fitment

The ARP Header Bolt Kits are designed for straightforward, bolt-on installation. They are compatible with a wide range of headers and exhaust manifolds that use 3/8 in.-16 threaded fasteners. No special tools or modifications are typically required, and the compact head design allows for installation in tight spaces often encountered in modern engine bays. Always torque the bolts to the manufacturer’s specifications to ensure proper sealing and clamping force.

• No cutting, drilling, or special tuning is required for installation.
• Suitable for use in high-performance, street, and racing applications.

What's Included

• High-strength stainless steel header bolts
• Matching nuts and washers (if applicable)
• Installation instructions

Ideal For

• Performance enthusiasts building or upgrading exhaust headers
• Engine builders seeking durable, corrosion-resistant fasteners
• Restorers aiming for OEM-quality hardware with enhanced strength
• Anyone requiring reliable header fastening in high-temperature environments

Emissions Note

This product is designed for off-road or racing use only and may not be legal for use on pollution-controlled vehicles in all jurisdictions. Please check local regulations before installation.