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1230.99
Part #: ARP247-4204
ARP 247-4204 Diesel Custom Age 625+ Head Stud Kit
★★★★★
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Description
The ARP 247-4204 Diesel Custom Age 625+ Head Stud Kit from XDP is the ideal upgrade for your competition or high-horsepower 1998.5-2023 Dodge Ram 5.9L/6.7L Diesel. ARP is the industry leader when it comes to fasteners and offers
heavy-duty head studs for a wide variety of popular diesel applications.
Using head studs instead of standard head bolts provides your engine
with the clamping force required to keep your cylinder head
from lifting due to higher combustion pressures. It’s a proven fact that OEM head bolts are the weak link in a diesel engine; especially when the engine has been heavily modified. That’s because most engines are typically assembled from the factory using weaker Torque-To-Yield (TTY) bolts and preloaded to yield and beyond (typically 100-110%). Any increases in combustion pressure can lead to problems like blown head gaskets or catastrophic engine failure. Furthermore, because TTY bolts are yielded by design, they should never be re-used.
The 247-4204 Head Studs utilize ARP’s Custom Age 625+ featuring a high-strength chromium-cobalt nickel alloy. This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness, with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Typical tensile strength is 260,000-280,000 psi and a yield strength of 235,000-255,000 psi. This results in a fastener that is stronger than Chrome Moly 8740 and ARP 2000, and is well suited for use in high-performance applications.
The 247-4204 Head Studs utilize ARP’s Custom Age 625+ featuring a high-strength chromium-cobalt nickel alloy. This newly formulated super-alloy demonstrates superior fatigue cycle life, tensile strength and toughness, with complete resistance to atmospheric corrosion and oxidation. ARP is the first to develop manufacturing and testing processes for fasteners with Custom Age 625+. Typical tensile strength is 260,000-280,000 psi and a yield strength of 235,000-255,000 psi. This results in a fastener that is stronger than Chrome Moly 8740 and ARP 2000, and is well suited for use in high-performance applications.
ARP head studs begin by being placed vertically into special racks and precisely heat-treated. This procedure ensures complete heat penetration and is far superior to those lower quality studs from other manufacturers who just place the pieces in a basket. Head studs then move to a centerless grinding process to ensure that they are perfectly concentric. As many as ten separate machining steps are required to achieve this level of accuracy. The thread rolling operation is also done after the heat-treatment, which gives them about 2000% (that’s 20 times) better fatigue strength than lesser studs that are threaded prior to heat-treat. It costs a lot more to do it this way, because it’s tough on tooling, but the results are worth the additional effort. Fasteners are then shot-peened to remove any surface irregularities and upgrade the overall external integrity. Finally, a metal finishing process is also performed in-house with a durable black oxide coating applied for improved corrosion resistance.
There is a good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants. Simply put, there’s not a better stud setup on the market today. This head stud kit is a direct-fit for 24-valve 5.9L and 6.7L diesel engines found in Ram 2500/3500 pickups.
Features:
- Custom Age 625 Plus Super Alloy
- 235K-255K psi Yield Strength
- 260K-280K psi Tensile Strength
- Includes Chrome Moly Steel 12-Point Nuts
- Black Oxide Coating For Improved Corrosion Resistance
- Centerless Ground To Ensure They Are Perfectly Concentric
- Improved Clamping Force Prevents Cylinder Heads From Lifting
- Broached Stud Ends Install & Make Cylinder Head Removal Easier
- Heat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue Strength
- Shot-Peened To Remove Any Surface Irregularities And Upgrade The Overall External Integrity
- Hardened Parallel Ground Washers For An Even Load Distribution And More Accurate Torque Readings
- Comes With 0.5oz Of ARP Fastener Assembly Lubricant
Vehicle Fitment
| YEAR | MAKE | FOR ENGINE SERIES |
|---|---|---|
| 1998.5 | Dodge | 5.9L 24V Cummins |
| 1999 | Dodge | 5.9L 24V Cummins |
| 2000 | Dodge | 5.9L 24V Cummins |
| 2001 | Dodge | 5.9L 24V Cummins |
| 2002 | Dodge | 5.9L 24V Cummins |
| 2003 | Dodge | 5.9L 24V Cummins |
| 2004 | Dodge | 5.9L 24V Cummins |
| 2004.5 | Dodge | 5.9L 24V Cummins |
| 2005 | Dodge | 5.9L 24V Cummins |
| 2006 | Dodge | 5.9L 24V Cummins |
| 2007 | Dodge | 5.9L 24V Cummins |
| 2007.5 | Dodge | 6.7L 24V Cummins |
| 2008 | Dodge | 6.7L 24V Cummins |
| 2009 | Dodge | 6.7L 24V Cummins |
| 2010 | Ram | 6.7L 24V Cummins |
| 2010 | Dodge | 6.7L 24V Cummins |
| 2011 | Ram | 6.7L 24V Cummins |
| 2011 | Dodge | 6.7L 24V Cummins |
| 2012 | Ram | 6.7L 24V Cummins |
| 2012 | Dodge | 6.7L 24V Cummins |
| 2013 | Ram | 6.7L 24V Cummins |
| 2013 | Dodge | 6.7L 24V Cummins |
| 2014 | Ram | 6.7L 24V Cummins |
| 2014 | Dodge | 6.7L 24V Cummins |
| 2015 | Ram | 6.7L 24V Cummins |
| 2015 | Dodge | 6.7L 24V Cummins |
| 2016 | Ram | 6.7L 24V Cummins |
| 2016 | Dodge | 6.7L 24V Cummins |
| 2017 | Ram | 6.7L 24V Cummins |
| 2017 | Dodge | 6.7L 24V Cummins |
| 2018 | Ram | 6.7L 24V Cummins |
| 2018 | Dodge | 6.7L 24V Cummins |
| 2019 | Ram | 6.7L 24V Cummins |
| 2019 | Dodge | 6.7L 24V Cummins |
| 2020 | Ram | 6.7L 24V Cummins |
| 2020 | Dodge | 6.7L 24V Cummins |
| 2021 | Ram | 6.7L 24V Cummins |
| 2021 | Dodge | 6.7L 24V Cummins |
| 2022 | Ram | 6.7L 24V Cummins |
| 2022 | Dodge | 6.7L 24V Cummins |
| 2023 | Ram | 6.7L 24V Cummins |
| 2023 | Dodge | 6.7L 24V Cummins |
Disclaimer: XDP is in no way affiliated with Cummins or any of its subsidiaries or related companies, and that Cummins has not authorized the sale of any of XDP's parts, and has not tested or approved any of XDP’s parts for use in genuine Cummins brand products.
Specifications
- MPN 247-4204
- SKU ARP247-4204
- GTIN 672036035648
- ID 2145
- Manufacturer Name ARP
- Shipping Weight 10.00 lb.
- Shipping Length 11 in.
- Shipping Width 8 in.
- Shipping Height 3 in.
- Fuel Type Diesel
-
Prop 65
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
- Internal L26R3
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Reviews
★★★★★
4.8/5 Stars out of 5 Reviews
0
0
0
1
4
A/C Guy (Oklahoma) | January 16th, 2021
When you spend this kind of money on supposedly the best you would like to think quality would be ARP’s top priority. One stud had minor imperfections in the thread to the extent I couldn’t hand thread the nut and one stud did not have the Allen slot machined in the end. Not what you would expect when paying roughly $50 per stud.
2010Cummins (SW Oklahoma) | October 31st, 2020
These are pricey, but be assured, that if you install them properly, whether in a rebuild, or a one-by-one replacement on an already built engine, you can enjoy many years of reliable head gasket performance. I installed these in 7 hours, start to finish, using only simple hand tools and accurate snap-on torque wrenches. Some say the supplied amount of lube isn't sufficient. I had enough, and not hardly any left over. But to be sure, buy a small tube of it, just in case. Be sure to keep your box incase of warranty.
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Questions and Answers
How many are in this kit ?
View Staff Answer
Answer
ARP Diesel Custom Age 625 Head Stud Kit 247-4204 includes 26 studs, nuts and washers.
Can the studs be reused or are they one time use only?
View Staff Answer
Answer
Yes. As long as the fasteners have been installed and torqued correctly, and show no visible signs of damage, they can be re-used. If they show any signs of thread galling or corrosion, they should be replaced.
Yes. As long as the fasteners have been installed and torqued correctly, and show no visible signs of damage, they can be re-used. If they show any signs of thread galling or corrosion, they should be replaced.
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Fitment verification applies to year, make and engine only. Individual details such as model, trim packages, build dates, and other factory options can change fitment and must be verified by customer.
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