ARP 204-4206 Head Stud Kits 8740 Series Undercut Studs Porsche 911 All 1976-1997 Image1
 
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ARP Head Stud Kits 8740 Series Undercut Studs Porsche 911 All 1976-1997

 
  • Head Stud/Bolt Kit

  • Made in USA

  • ARP Quality


ARP 204-4206 Head Stud Kits 8740 Series Undercut Studs Porsche 911 All 1976-1997
List Price: $660.78
$561.66  Save 15%
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Product Details

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. 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. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). 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

  • Head Stud Kit High Performance 8740 Series Undercut Studs 12Point Head
  • Air Cooled


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Vehicle Applications

Years Make Model Trim Chassis Engine Notes
1976 - 1997 Porsche 911 ALL     Head Stud Kit High Performance 8740 Series Undercut Studs 12Point Head Air Cooled
1978 - 1979 Porsche 930 ALL     Head Stud Kit High Performance 8740 Series Undercut Studs 12Point Head Air Cooled Air Cooled