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ARP Auto Racing Cylinder Head Stud 2604702

Brand: ARP Auto Racing ARP Auto Racing
0 reviews
  • Have a product question? Ask us
  • Part Number: 260-4702
  • Part Location: U.S.
  • Availability: *Special Order
  • Delivery: Up to 2 Weeks
  • If purchased before 12:00 EDT - estimated delivery by July 23
Retail: $517.64
Price: $492.99
You Save: $24.65
Engine Compatibility
Subaru H4 2.2L-2.5L 152 Cubic Inch
Finish
Black Oxide
Material
Chromoly Steel
Nut Type
12-Point
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ARP Auto Racing Cylinder Head Stud

Cylinder Head Stud; For Use With Single Overhead Cam EJ Series Subaru; 12 Point Nuts With Undercut Studs; Black Oxide; Chrome Moly

MPN: 2604702

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all out competition power plants. Simply stated, there’s not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Each stud is placed vertically in special racks and precisely heat treated to 200,000 PSI. Following heat treat, each stud is centerless ground to make it as close to perfectly concentric as possible. It’s important to note that lesser quality studs are not even centerless ground, the material is thread rolled in bar stock form. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned, something that won’t happen with inferior quality head studs. ARP studs are thread rolled after heat treat, which gives them about 1000 Percent (that’s ten times) better fatigue strength than those 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. You will also note that ARP offers specially undercut studs for several engines. This procedure (done only to the shorter studs) more equalizes the “stretch” of both studs, which makes for a more consistent clamping force and one that compensates for head gasket compression when the cylinder heads are installed. This helps prevent blown head gaskets, and assures optimum engine sealing! Premium quality heat treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications. You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality. Clearly, they are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.
Engine Compatibility: Subaru H4 2.2L-2.5L 152 Cubic Inch
Nut Type: 12-Point
Finish: Black Oxide
Material: Chromoly Steel

Features

  • Uses A Premium Grade 8740 Alloy That Is Rated Far Superior To Aircraft Quality
  • Stud Is Placed Vertically In Special Racks And Precisely Heat Treated To 200,000 PSI
  • Centerless Ground To Make It As Close To Perfectly Concentric As Possible
  • Thread Rolled After Heat Treat, Which Gives Them About Ten Times Better Fatigue Strength Than Those Studs That Are Threaded Prior To Heat Treat
  • Limited 90 Day Warranty
Specifications of ARP Auto Racing Cylinder Head Stud 2604702
Engine Compatibility Subaru H4 2.2L-2.5L 152 Cubic Inch
Finish Black Oxide
Material Chromoly Steel
Nut Type 12-Point

2004 Subaru Baja
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2004 Subaru Forester
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2005 Subaru Outback
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2013 Subaru Outback
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