What material are the ARP Ram Air 5 Hex Head Studs made from?

These studs are made from 8740 chromoly steel. This material is heat-treated, quenched, and tempered to achieve a tensile strength of 200,000 psi, making them very strong for engine applications.

Why are rolled threads better than cut threads for head studs?

Rolled threads are formed by displacing the metal rather than removing it, which strengthens the thread root and increases fatigue life. This makes them more durable and less prone to failure under the high clamping forces of an engine head.

What is the advantage of the hex heads on these studs?

The hex heads allow you to easily thread the studs into the engine block using a standard socket wrench. This makes installation more straightforward compared to studs that require a stud installer tool or are threaded in by hand.

ARP 190-4205 Ram Air 5 Hex Head Stud Kit

Name: ARP Ram Air 5 Hex Head Stud Kit
Brand: ARP
SKU: arp-arp-ram-air-5-hex-head-stud-kit-t14-172186
Price: 240.44 USD
Availability: BackOrder

ARP Ram Air 5 Hex Head Stud Kit

$240.44

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ARP Ram Air 5 Hex Head Stud Kit.

Key Features

This kit fits specific engine applications; verify fitment before purchase.
Constructed from 8740 chromoly steel for high strength and durability.
Heat-treated, quenched, and tempered to achieve 200,000 psi tensile strength.
Features rolled threads for increased strength and longevity compared to cut threads.
Center-less ground for precise concentricity and consistent clamping.
Hex heads allow for easier installation into the engine block.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

The ARP Ram Air 5 Hex Head Stud Kit uses 8740 chromoly steel, a strong material that can handle the high clamping forces needed for performance engine builds. These studs are heat-treated and then quenched and tempered to achieve a tensile strength of 200,000 psi, ensuring they won't stretch or fail under pressure. The hex heads on these studs make installation easier, allowing you to thread them into the block with a socket before placing the cylinder heads.

ARP is well-known for making solid engine components, and this head stud kit is no exception. They are manufactured with rolled threads, which are stronger and more durable than cut threads, and they are center-less ground to ensure a perfect concentricity. This attention to detail means the studs will seat properly and provide a consistent clamping load across the cylinder head, which is crucial for preventing leaks and ensuring proper gasket sealing.

This kit is designed for specific applications, so be sure to check the fitment details to confirm it matches your engine. Using quality head studs like these is a smart move when you're rebuilding or modifying an engine, especially if you plan on running higher boost levels or increased cylinder pressures.