Approx 4-5 day lead time

AR260-4701

It Is For Good Reason That Vir tually Every Top Professional Engine Builder Relies On Arp P ro Series Head Studs For Their All-out Competition Powerplan ts. Simply Stated, There's Not A Better Stud Set Up On The M arket Today. For Openers, Arp Uses A Premium Grade 8740 Alloy That Is Rated Far Superior T o Aircraft Quality. Then Each Stud Is Placed Vertically In Special Racks And Precisely Heat Treated To 200,000 Psi. This Procedure Ensures Complete He at Penetration And The Results Are Far Superior To Those Les ser Quality Studs From Other Manufacturers Who Just Dump Pieces In A Basket And Hope For T he Best. You Will Also Note Th at Arp Offers Specially Undercut Studs For Several Engines. This Procedure (done Only To T he Shorter Studs) More Equalizes The Stretch Of Both Studs, Which Makes For A More Consistent Clamping Force - And One T hat Compensates For Head Gasket Compression When The Cylinders Are Installed. This Helps Prevent Blown Head Gaskets, And Assures Optimum Sealing! Arp Head Stud Kits Are Available With Your Choice Of Conventional Hex Nuts Or Compact 12-point Nuts. Premium Quality Ground