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All customers must understand and agree to the core policy below. If you have questions, please feel free to call us at (901)553-9847 or email office@diesel911.com.

Core charge will be paid up front in the amount quoted on your estimates. If you choose to send your core in first there is no fee charged up front. however there may be fees after inspection to be paid before your new engine ships out by buying you agree to have the engine core ready for pickup and return to us within 30 days of receiving the engine. Failure to do so will void your warranty. If you have no core or the core is no good. (core must have no visible cracks or holes and rotate 360 degrees) core will be inspected and must meet diesel doctor of tn specifications to deem it a good usable core. The engine will be shipped to diesel doctor of tn in shrink wrap on a non returnable wooden pallet & the appropriate core charge due.

Inspection of core takes approx, 30 days. once inspected appropriate core fees will be kept and balancing remaining will be refunded promptly we require a like for like core. Meaning if we send you a long block we require everything from your core long block to be usable and machinable.

Any core engines not returned within the specified time will be subject to a restocking fee of 40%.

We will need the year, make, model, and vin number to make sure you are buying the correct engine before we ship.

Home | Powerstroke | 6.0 Powerstroke 2003-2007 | Parts | ARP 6.0 Head Stud Kit (for 6.0 Powerstroke 2003-2007)
6.0 head studs 250-4202

ARP 6.0 Head Stud Kit (for 6.0 Powerstroke 2003-2007)

SKU: 2504202

$595.84

Quantity

Categories: 6.0 Powerstroke 2003-2007, Parts, Powerstroke
  • Description
  • Features

Description

Upgrade your 2003-2007 Ford 6.0 Powerstroke with an ARP 250-4202 Diesel Head Stud Kit. It’s a proven fact that OEM head bolts are the weak link in a diesel engine; especially if the engine has been modified. That’s because most engines are typically assembled from the factory using 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 and because TTY bolts are yielded by design, they should never be re-used.

ARP is the industry leader when it comes to fasteners and manufactures heavy-duty head studs for a wide variety of poplar diesel applications. Using head studs instead of standard head bolts provides your engine with the clamping force required to keep your cylinder heads from lifting and blowing a head gasket due to higher combustion pressures. For the 250-4202 Head Studs, ARP starts with a premium grade ARP2000 alloy that is rated far superior to aircraft quality alloy steels. ARP2000 is an alloy steel that can be safely heat treated to a higher level, producing a greater strength material that Chrome Moly 8740. While 8740 and ARP2000 share similar characteristics, ARP2000 is capable if achieving a higher clamp load at 220,000 psi.

Each stud is placed vertically into special racks and precisely heat-treated. This procedure ensures complete heat penetration and the results are far superior to those lesser quality 6.0 head studs from other manufacturers who just dump pieces in a basket and hope for the best. ARP head studs then go through a centerless grinding process to ensure that they are perfectly concentric. As many as ten machining steps are required to achieve this level of accuracy. The thread rolling operation (to MIL-S-8879A specs) is also done after the heat-treatment, which gives them about 2000% (that’s twenty timers) 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 well worth the extra effort. Fasteners are then shot-peened to remove any surface irregularities and improve overall external integrity. The final step is a metal finishing process that is also performed in-house at ARP with a black oxide coating applied for long lasting 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. These 6.0 Powerstroke Head Studs are a direct-fit for 2003-2007 Ford F-250/350/450/550 Super Duty pickups as well as the 2003-2005 Ford Excursion. ARP also offers Inner Row Head Bolts as an add-on to compliment this head stud kit (sold separately, see related items below).

FEATURES :

Proprietary ARP 2000 Material

Rated At 220,000 PSI Tensile Strength

Includes Chrome Moly Steel 12-Point Nuts

Black Oxide Coating For Added Corrosion Resistance

Centerless Ground To Ensure They Are Perfectly Concentric

Improved Clamping Force Prevents Cylinder Head Removal Easier

Heat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue Strength

Shot-Peened To Remove Any Surface Irregularities And Improve Overall External Integrity

Hardened Parallel Ground Washers For An Even Load distribution And Accurate Torque Readings

Comes With 0.5oz of ARP Assembly Lubricant

Note : ARP is aware of forum postings providing incorrect torque values. Please follow the included installation instructions for proper torque specifications and tightening sequence.

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