ARP Header Bolt Kits

Header Bolt & Stud Kits for Automotive Applications

Part #: 400-1109

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 and durable solution for securing exhaust headers and related components. Whether you're building a race car, restoring a classic, or enhancing your daily driver, these bolts are an essential upgrade to ensure a secure and long-lasting connection.

Designed for enthusiasts who demand strength and corrosion resistance, ARP header bolt kits help support the integrity of your exhaust system under extreme conditions. Their high-quality construction ensures that your headers stay firmly in place, reducing the risk of leaks and exhaust leaks that can compromise performance and emissions.

Key Features

ARP Header Bolt Kits are built with several key features that set them apart from standard hardware:

• Material: Made from high-grade stainless steel, these bolts are 15% stronger than traditional Grade 8 steel, providing increased strength and durability for demanding applications.
• Corrosion Resistance: The polished stainless steel finish offers excellent resistance to rust and corrosion, ensuring longevity even in harsh environments or exposure to moisture.
• Design: The compact head design allows for easy installation in tight spaces, with a 12-point and hex-style head options for versatile tool engagement.
• Thread Size & Length: Featuring a 3/8 in.-16 thread size and a 1.000 in. (25mm) underhead length, these bolts are compatible with a wide range of header applications.
• Heat Resistance: Engineered to withstand high temperatures typical of exhaust systems, maintaining strength and integrity under thermal stress.
• Precision Manufacturing: Manufactured with tight tolerances to ensure proper fitment and consistent performance across every kit.
• Corrosion-Resistant Finish: The polished finish not only enhances appearance but also adds an extra layer of protection against corrosion and heat-related degradation.

Construction & Design

The ARP Header Bolt Kits are constructed from premium stainless steel, which offers a superior combination of strength, corrosion resistance, and heat tolerance. The bolts feature a compact head design, allowing for installation in confined spaces often encountered near headers and exhaust manifolds. The 12-point and hex-style heads provide versatile options for socket engagement, making installation straightforward even in tight or hard-to-reach areas.

The precision-machined threads ensure a secure fit, reducing the risk of loosening due to thermal expansion or vibrations. The underhead length of 1 inch (25mm) provides ample engagement into the threaded holes, ensuring a stable and reliable connection. These bolts are engineered to withstand the extreme heat and stress typical of high-performance exhaust systems, making them ideal for both street and race applications.

Performance & Reliability

By upgrading to ARP Header Bolt Kits, you gain peace of mind knowing your exhaust headers are secured with hardware that exceeds OEM standards. The increased strength and corrosion resistance help prevent header leaks and hardware failure, which can lead to performance issues or costly repairs. These bolts are designed to maintain their integrity over time, even under demanding conditions, ensuring your exhaust system remains sealed and functioning optimally.

Installation & Fitment

Installing the ARP Header Bolt Kits is a straightforward process, typically involving removing the existing hardware and replacing it with these high-strength bolts. Their standard 3/8 in.-16 thread size makes them compatible with a wide range of headers and exhaust components. No special tools or modifications are required, and the bolts are designed to fit OEM or aftermarket headers without issue.

Due to their compact head design, these bolts are especially useful in tight engine bay spaces where clearance is limited. Their heat-resistant properties ensure they maintain their strength even after prolonged exposure to high exhaust temperatures.

What's Included

• Complete set of stainless steel header bolts with 12-point heads
• Matching nuts and washers (if included in the kit)
• Installation instructions and hardware overview

Ideal For

• Performance enthusiasts building or upgrading high-performance engines
• Engine builders seeking durable, corrosion-resistant hardware
• Restoration projects requiring reliable fasteners for exhaust headers
• Street and race applications demanding high-strength, heat-resistant hardware