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ARP Diesel Custom Age 625+ Head Stud Kit 247-4205
PART#
247-4205 | SKU ARP247-4205
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Description
The from XDP is the
ideal upgrade for your competition or high-horsepower 1989-1998 Dodge 5.9L 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 247-4205 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 247-4205 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 12-valve 5.9L 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
Installation Note:
Rocker Arm Pedestals must be modified for installation.
XDP Thread Cleaning Chasers (Sold Separately):
The
XDP Thread Cleaning Chasers XD40125TC (For Head Studs) & XD40128TC
(For Rocker Arm Pedestal Bolts) are an excellent add-on that should be
used prior to installation of this kit. Using Thread Cleaning Chasers
ensures that you are able to properly clean the threads in your engine
block before the installation and torquing of the head studs. Clean
threads will provide you with accurate torque readings which are
critical during your head gasket repair, or engine build.
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 247-4205
- SKU ARP247-4205
- GTIN 672036035655
- ID 2146
- 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 L10R2
Frequently Bought Together
In-Stock
XDP Milled Rocker Arm Pedestal Set XD3015RA
PART# XD3015RA
$209.95
Vehicle Fitment For:
1989-1998 Dodge with 5.9L Cummins Engine
1989-1998 Dodge with 5.9L Cummins Engine
In-Stock
XDP Thread Cleaning Chaser (M12x1.75) XD40125TC
PART# XD40125TC
$18.95
$19.95
Vehicle Fitment For:
Universal - M12 x 1.75
Universal - M12 x 1.75
In-Stock
XDP Thread Cleaning Chaser (M8x1.25) XD40128TC
PART# XD40128TC
$18.95
$19.95
Vehicle Fitment For:
Universal - M8 x 1.25
Universal - M8 x 1.25
In-Stock
ARP Ultra-Torque Fastener Assembly Lubricant
FROM
$1.47
Vehicle Fitment For:
For Use With ARP Fasteners
For Use With ARP Fasteners
In-Stock
ARP Diesel Main Stud Kit 247-5402
PART# 247-5402
$281.99
Vehicle Fitment For:
1994-1997 Dodge with 5.9L Cummins Engine
1994-1997 Dodge with 5.9L Cummins Engine
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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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