6.7 Cummins Arp Head Studs

ARP head studs are a necessary component of 6.7 Cummins engines, located in the cylinder heads. They are designed to provide an increased clamping force on the cylinder head gasket and reduce the risk of premature failure due to elevated temperatures and pressures. The studs have a corrosion-resistant coating that helps ensure they remain secure even under extreme conditions.

Additionally, ARP head studs replace your factory bolts with superior grade fasteners that can handle higher torque loads for improved clamping power and better sealing capabilities, allowing you to increase performance without sacrificing reliability or longevity.

If you’re looking to upgrade your 6.7 Cummins engine, then ARP head studs are a great option. These heavy-duty studs provide improved clamping force compared to the stock components, allowing for higher boost and torque levels without sacrificing reliability. They also help reduce head gasket failures due to their superior strength and better sealing capabilities than stock parts.

With a longer service life and greater performance potential, these ARP head studs are an excellent choice for those seeking maximum power from their 6.7 Cummins engine.

6.7 Cummins ARP head stud install guide (head on, one at a time)

Do I Need Head Studs 6.7 Cummins?

Head studs are a great investment for those looking to get the most out of their 6.7 Cummins diesel engine. While not absolutely essential, head studs help ensure that your engine can handle higher performance levels without the risk of head gasket failures or other damage due to increased cylinder pressure and heat. Head studs add more rigidity to the cylinder heads, preventing them from flexing under high temperatures and pressures by using superior materials such as stainless steel or chrome-molybdenum alloys.

This helps keep your engine running cooler and smoother while allowing it to produce more power with greater reliability over time. If you’re looking for maximum performance out of your 6.7 Cummins diesel engine, then investing in a set of head studs is highly recommended!

What is the Difference between Arp 2000 And 625 Cummins?

The Cummins ARP 2000 and 625 are two different types of diesel engines, each with its own unique characteristics. The ARP 2000 is a turbocharged 6-cylinder engine that was developed in the early 1990s and has since been used in many heavy duty applications such as construction equipment, marine vessels, and over-the-road trucks. It has an impressive power output of up to 400 horsepower (hp) at 2200 rpm.

On the other hand, the Cummins 625 is a non-turbocharged 4 cylinder engine that was released in 2001 and is commonly seen in agricultural machinery as well as recreational vehicles such as motor homes. Its maximum power output stands at 325 hp at 2400rpm which makes it slightly less powerful than its predecessor. Both models have similar bore/stroke ratios which result in comparable torque figures however; the main difference between them lies within their technology levels due to advancements made over time with regards to fuel delivery systems, cooling systems etc., resulting in higher efficiency ratings for newer models like the ARP 2000 compared to older ones like the Cummins 625.

Why are Arp Head Studs So Expensive?

ARP head studs are an essential part of a high-performance engine, but they come at a price. The cost can be especially prohibitive for those looking to build their own engines or upgrade existing ones. So why are ARP head studs so expensive?

The answer lies in the fact that ARP (Automotive Racing Products) is one of the leading manufacturers of precision fasteners and components made from superalloys such as stainless steel, titanium and Inconel. These materials are costly due to their strength and ability to withstand extreme temperatures and other harsh conditions found inside an engine block. They also require specialized manufacturing techniques which adds to their expense when compared with standard bolts.

Another factor driving up the costs is that all ARP products are designed for specific applications, ensuring maximum performance on each application. This means more engineering time is required during development as well as increased quality control measures during production – both contributing to higher prices than you would find elsewhere in the market place. Finally, since very few companies manufacture this type of product it allows them to set higher prices due limited competition within the market space; something many consumers take issue with but unfortunately must accept if they need these parts for their builds or upgrades .

Are Arp Head Studs Necessary?

ARP head studs are a popular upgrade among engine builders and performance enthusiasts, but are they necessary? The answer to this question can depend on the application. ARP head studs offer many advantages over factory bolts, including increased clamping force, improved structural integrity of the cylinder heads, and reduced distortion due to heat cycling.

This is especially important in high-performance applications that require higher levels of boost or compression than what would be found in a stock engine build. In these cases, ARP head studs become essential for preventing costly repairs from failed parts under extreme conditions. Additionally, installing ARP head studs is often more cost effective than replacing your factory hardware with aftermarket components as it eliminates the need for additional components such as gaskets and washers which can quickly add up when building an engine from scratch.

Ultimately, whether or not you choose to install ARP head studs into your build comes down to personal preference; however if you plan on pushing your car’s limits beyond its original design specs then investing in quality hardware like ARP is almost always worth it in the long run!

6.7 Cummins Arp Head Studs

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6.7 Cummins Arp Head Studs Torque

When installing 6.7 Cummins ARP head studs, it is important to make sure they are properly torqued in order to ensure a secure and reliable seal. The recommended torque for these studs is 90-95 lb-ft of torque with an additional 1/4 turn added after achieving the initial torque value. This extra ¼ turn helps ensure that the threads have been completely engaged and prevents any potential leakage issues.

It is also important to use anti-seize compound on the threads prior to installation, as this will reduce friction and help prevent galling or seizing of the threads due to extreme temperatures or pressure changes over time.

Best Head Studs for 6.7 Cummins

If you are looking for the best head studs for your 6.7 Cummins engine, then look no further than ARP Head Studs. ARP is a leader in automotive performance and they offer several different kits to fit your specific needs. Their head studs are made from high-grade steel alloy and feature an exclusive “wave-locking” design that helps prevent movement under extreme loads.

The added durability makes them ideal for both street racing and drag racing applications, as well as all other types of motor sports involving high boost pressures or elevated cylinder pressures.

6.7 Cummins Arp Head Studs Install

Installing ARP head studs on a 6.7 Cummins engine is an important step in increasing its strength and reliability. This upgrade will help prevent head gasket failure, which can lead to costly repairs down the road. The installation process requires special tools and time, but with the right knowledge it can be done in a few hours.

It’s important that each stud is torqued properly during installation to ensure proper sealing of the head gasket against cylinder pressure leakage, so some basic mechanical skills are needed for this job.


In conclusion, ARP head studs are a great choice for those looking to upgrade their 6.7 Cummins engine. Not only do they provide peace of mind knowing that the heads will be held with greater strength and precision than stock hardware, but also help unlock more power potential from modified engines. They are offered in several grades of steel to fit any budget or horsepower levels desired.

With proper installation and maintenance, these head studs can last up to twice as long as bolts while providing better clamping force on your cylinder heads and extending the life of your diesel engine.


  • Zayn

    John Zayn Smith is a renowned truck enthusiast, automotive industry expert, and author. Beginning his career as a mechanic, Zayn's curiosity led him to explore all facets of the trucking world, sharing his insights through in-depth articles on TruckGuider.com. His knowledge spans truck mechanics, trends, and aftermarket modifications, making him a trusted resource for both professionals and hobbyists. Outside writing and mechanics, Zayn enjoys off-roading, truck shows, and family time. Follow his work for the latest in truck-related news and tips.

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