Header Bolt ARP Machined 1/4in for Performance

Description

Product Overview

The ARP 621-3500 header bolt set delivers five premium‑grade, 1/4‑inch (20 thread) bolts crafted from hardened steel with a machined exterior finish. Designed specifically for performance exhaust headers, each bolt offers a balance of strength and reduced weight at just 5.3 ounces per set. Manufactured in the United States, the bolts meet ARP’s rigorous quality standards, ensuring consistent torque and resistance to vibration. Key specifications include a GTIN of 00672036019723, UPC 672036019723, and compatibility with a wide range of vehicle‑specific exhaust systems.

Usage

These bolts are ideal for automotive enthusiasts and professional mechanics installing or upgrading performance exhaust headers on cars, trucks, and light‑duty racing vehicles. Their precise 1/4‑inch thread size guarantees a snug fit on OEM‑type header studs, reducing the risk of loosening under high‑rpm conditions. Use them during routine maintenance, header replacements, or custom exhaust builds to achieve optimal exhaust flow and durability.

Why Choose Us

Choosing ARP means selecting a brand trusted by motorsports teams worldwide. Each bolt undergoes a multi‑stage heat‑treatment process that enhances tensile strength while maintaining a lightweight profile. The American‑made construction provides superior corrosion resistance compared to generic fasteners. Additionally, ARP offers a comprehensive warranty and technical support, giving confidence that the product will perform under demanding conditions.

Key Features

• Five 1/4‑inch (20‑thread) machined steel bolts for precise header fit
• Lightweight design at only 5.3 ounces per set for reduced overall vehicle weight
• Made in the USA with ARP’s strict quality control and heat‑treatment processes
• Vehicle‑specific fit ensures compatibility with a broad range of performance exhaust headers
• High‑grade material provides excellent resistance to heat and vibration

FAQ

What vehicles are compatible with the ARP 621-3500 header bolts?

The bolts are vehicle‑specific and fit most performance exhaust headers that use a 1/4‑inch (20‑thread) stud. Check your vehicle’s service manual or consult ARP’s fit guide for exact compatibility.

Can these bolts be used for street‑driven vehicles?

Yes, they are suitable for both street and track applications. Their high tensile strength and vibration resistance make them reliable for daily driving and high‑performance use.

Do I need any special tools to install these bolts?

Standard torque wrenches and socket sets that accommodate a 1/4‑inch thread are sufficient. Follow ARP’s torque specifications for optimal installation.

Are the bolts coated for corrosion resistance?

The machined steel finish provides inherent corrosion resistance, and the bolts are treated during manufacturing to further protect against rust and heat‑induced degradation.

What warranty does ARP offer on these header bolts?

ARP provides a limited warranty covering manufacturing defects. For detailed warranty terms, refer to the product documentation or contact ARP customer support.