Description
Product Overview
The ARP 400-1211 12‑point header bolt kit is a precision‑engineered solution designed for the demanding requirements of Small Block Chevrolet (SBC) engines. Each kit contains twelve high‑strength Grade 8 hex bolts, sized 3/8‑in, that feature a robust painted silver finish to resist corrosion and maintain a consistent appearance even under the most rigorous operating conditions. These bolts are manufactured to ARP’s Grade 400 specifications, ensuring that they meet the exacting standards required for high‑performance automotive applications. The hex head design provides a secure, torque‑friendly interface that allows for accurate tightening, reducing the risk of head‑to‑block distortion and promoting optimal engine performance.
Beyond the core specifications, the kit includes detailed installation instructions that guide users through the proper torque sequence, ensuring that each bolt is installed with the correct preload. The bolts are right‑hand threaded, a standard configuration for most SBC applications, and they conform to the UNC thread type and 2A thread class, guaranteeing compatibility with existing engine components. The package dimensions of 5 × 1 × 7 in and a lightweight total weight of 9.4 ounces make the kit easy to handle and store, while the included UPC and GTIN identifiers simplify inventory management for retailers and distributors.
Designed for both professional mechanics and dedicated enthusiasts, the ARP header bolt kit offers a blend of durability, precision, and ease of use that sets it apart from generic fastener solutions. The combination of a high‑grade material, a corrosion‑resistant finish, and a proven design philosophy makes this kit an essential component for anyone seeking to maximize the reliability and performance of their SBC engine builds.
Usage
This bolt kit is ideally suited for a wide range of applications, from street‑legal performance builds to track‑focused race engines. Whether you are upgrading a classic 1960s Chevrolet small block or installing a modern aftermarket header on a contemporary SBC platform, the ARP 400‑1211 provides the necessary strength and precision to handle increased combustion pressures and higher RPM ranges. The bolts excel in environments where thermal stability and resistance to vibration are critical, making them a reliable choice for engines that experience frequent temperature fluctuations and high‑stress operating conditions.
In addition to performance applications, the kit is also an excellent choice for restoration projects where authenticity and durability are paramount. The painted silver finish not only matches the aesthetic of many classic engine builds but also offers protection against rust and wear, extending the service life of the fasteners. Mechanics and hobbyists alike will appreciate the straightforward installation process, which reduces downtime and allows for quicker return to the road or track.
Why Choose Us
Choosing the ARP 400‑1211 header bolt kit means selecting a product backed by decades of engineering expertise and a reputation for quality that is recognized throughout the automotive performance community. ARP’s commitment to rigorous testing and continuous improvement ensures that each bolt meets or exceeds OEM specifications, providing peace of mind for users who demand reliability under extreme conditions. The Grade 8 alloy composition delivers superior tensile strength, while the hex head design facilitates consistent torque application, reducing the likelihood of over‑ or under‑tightening.
Beyond the technical advantages, ARP offers comprehensive customer support, including detailed installation guides, torque specifications, and access to a knowledgeable technical team ready to assist with any questions. This level of service underscores ARP’s dedication to not only delivering high‑quality products but also fostering long‑term relationships with its customers. When you purchase the ARP header bolt kit, you are investing in a solution that combines engineering excellence, material superiority, and a support network that ensures you get the most out of your engine build.
Key Features
- Grade 8 alloy bolts provide exceptional tensile strength for high‑performance engine demands.
- Painted silver finish resists corrosion, extending bolt life even in harsh environments.
- 12‑point hex head design ensures precise torque application and reduces risk of head distortion.
- Includes twelve bolts per kit, covering all standard SBC header mounting points for complete coverage.
- Backed by ARP’s dedicated technical support and detailed installation instructions for hassle‑free setup.
FAQ
What makes the ARP 400‑1211 bolts different from standard OEM bolts?
The ARP 400‑1211 bolts are manufactured to Grade 400 specifications, using a high‑strength Grade 8 alloy that offers greater tensile strength and fatigue resistance compared to typical OEM fasteners. Additionally, the painted silver finish provides superior corrosion protection, and the precise hex head geometry allows for more accurate torque settings, which is essential for maintaining engine integrity under high‑performance conditions.
Can these bolts be used on engines other than Small Block Chevy?
While the kit is specifically engineered for Small Block Chevrolet applications, the bolt dimensions and thread specifications (3/8‑in UNC, right‑hand thread) are common to many other engine families. However, it is recommended to verify compatibility with the target engine’s mounting points and torque requirements before installation to ensure optimal performance and safety.
Do I need any special tools to install the ARP header bolt kit?
Installation requires a standard hex socket or wrench that matches the bolt head size, typically a 1/2‑inch drive for the 3/8‑in bolts. For best results, use a calibrated torque wrench to apply the manufacturer‑specified torque values. The included installation guide outlines the recommended torque sequence and values to help achieve a proper and secure fit.
What warranty does ARP provide for this bolt kit?
ARP offers a limited warranty that covers defects in material and workmanship for a period of one year from the date of purchase. This warranty does not cover damage resulting from improper installation, misuse, or modifications that deviate from the recommended specifications. For warranty claims, customers should retain the original packaging and proof of purchase.
How should I store the bolt kit to maintain its quality?
Store the kit in a cool, dry environment away from direct sunlight and corrosive substances. Keeping the bolts in their original packaging helps protect the painted finish and prevents contamination. If the bolts are exposed to moisture, wipe them dry and inspect for any signs of rust before installation.
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