USD 356.99

ARP 247-4206 Diesel Head Stud Kit

PART# 247-4206 | SKU ARP247-4206

Vehicle Fitment For:
Applications with 3.9L 4BT Cummins Engine | See full application list below
$356.99
Buy now, pay later using Affirm Logo during checkout.
In-Stock
FREE Delivery by ,
If you order within hr min
This product cannot be shipped to your destination
Not Shipping to ?
Need it faster?
Our Recommendations Compatible Products
Close
Scroll to View More

Description

The ARP 247-4206 Diesel Head Stud Kit from XDP lets you upgrade your 3.9L 4BT Diesel engine so it can withstand anything you throw at it. 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. Furthermore because TTY bolts are yielded by design, they should not be re-used.

It is for good reason that virtually every top professional engine builder relies on ARP head studs for their all-out competition powerplants. ARP is the industry leader and builds heavy-duty head studs and fasteners for a wide variety of popular diesel applications. Using head studs instead of standard bolts provides your engine with the clamping force required to keep your cylinder head from lifting due to higher combustion pressures. For the ARP 247-4206 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 than Chrome Moly 8740. While 8740 and ARP2000 share similar characteristics, ARP2000 is capable of achieving a higher clamp load at 220,000 psi.

Each stud is first placed vertically into special racks and precisely heat-treated. This ensures complete heat penetration, and the results are far superior to lower quality studs from other manufacturers that just dump pieces in a basket and hope for the best. ARP head studs then travel through a centerless grinding process to ensure that they are perfectly concentric. The thread rolling operation is also done after the heat-treatment, which gives them about 2000% (that’s 20 times) better fatigue strength than 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 improve overall external integrity. A black oxide coating is applied as the final step for long lasting corrosion resistance.

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 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 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


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 247-4206
  • SKU ARP247-4206
  • GTIN 672036044169
  • ID 80341
  • Manufacturer Name ARP
  • Shipping Weight 6.00 lb.
  • Shipping Length 9 in.
  • Shipping Width 5 in.
  • Shipping Height 2 in.
  • Fuel Type Diesel
  • Prop 65 Prop 65 WarningWARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
  • Internal L0R2

Reviews

No Reviews Yet!

Write a Review

$20 OFF your next order of $250 or more! When you leave a product review! (brand exclusions apply, retail customers only)

Overall Rating

Your Information

Email Address will not be made public.

Questions and Answers

No questions about this product. Be the first to ask a question!

Ask a question about this product

Please allow up to 1 business day for reply.

More to Consider

Recently Viewed

ITEM ADDED TO CART

Complete the job with these highly suggested add-on products.

Product prices marked with an * may require additonal fees, such as a core charge, which will be displayed in the cart.