Description
Product Overview
The ARP 622-3500 header bolt set is engineered for high‑performance exhaust systems. Each bolt features a hex head design and a dual‑finish of polished black oxide, providing both aesthetic appeal and superior corrosion resistance. Constructed from machined steel, the bolts weigh 7.4 ounces each and meet ARP’s stringent quality standards. The package includes five bolts, each stamped with the model number 622-3500 for easy identification and replacement. With a global trade identification number of 00672036016449, these bolts are recognized worldwide for their reliability.
Usage
These bolts are ideal for installing or upgrading performance headers on street and track vehicles. Whether you are a professional mechanic working in a shop or a hobbyist tuning a personal car, the ARP header bolts provide a secure, torque‑controlled connection that withstands high exhaust temperatures and vibration. They are especially suited for applications where a clean, black‑finished appearance is desired, such as custom builds and show cars. 
Why Choose Us
ARP is a trusted name in the automotive fastener industry, known for precision engineering and rigorous testing. Each bolt undergoes a heat‑treatment process to achieve optimal tensile strength, ensuring long‑term durability under extreme conditions. The black oxide finish not only enhances visual appeal but also adds an extra layer of protection against rust and wear. Manufactured in the United States, these bolts comply with OEM specifications, guaranteeing a perfect fit for the intended applications.
Key Features
- Hex head design for easy torque application and secure fit.
- Black oxide and polished finish provides corrosion resistance and a sleek look.
- Machined steel construction delivers high tensile strength for demanding exhaust environments.
- Five‑piece kit includes all bolts needed for a complete header installation.
- OEM‑approved model 622-3500 ensures compatibility with a wide range of performance headers.
FAQ
What size wrench is required for these hex bolts?
The bolts use a standard 13 mm (½ inch) hex socket, compatible with most metric and SAE wrenches.
Can these bolts be used on stock exhaust systems?
Yes, the ARP header bolts are suitable for both stock and aftermarket exhausts, offering a reliable upgrade for any setup.
Is the black oxide finish durable under high heat?
The black oxide coating is heat‑treated to maintain its protective properties even at elevated exhaust temperatures.
Do I need a torque wrench for installation?
While a torque wrench is recommended to achieve the manufacturer‑specified torque, the hex design allows for hand tightening in a pinch.
Are these bolts covered by a warranty?
Yes, ARP provides a limited warranty against material defects, reflecting confidence in the product’s quality.
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