4.0 TFSI EA825 High End stud bolt Block BAR-TEK®

High-end stud bolt kit for the engine block / main bearing race for all 4.0L TFSI V8 engines such as the Audi RS6, RSQ8, Lamborghini Urus and many more. A MUST for all engines that run with boost pressure and for which ARP is not yet stable enough!BAR-TEK® Stud bolts have a hexagon socket for screwing in the . Due to a cone on the block side of the studs, they are not supported on the thread flanks when the nuts are tightened, but in the bore of the thread in the engine block. This support protects the threads during frequent assembly of powerful racing engines. Stud bolt Manufactured from ultra-pure 18.8 tool steelAll threads rolled for maximum strengthwith taper for pretensioning for optimum force distribution on all threadsHexagon socket drive for easy assemblyTensile strength over 1800 N/mm² (270,000 psi)Nickel coating for outstanding corrosion protectionreusableUp to 35% stronger expansion steel than ARP bolts. Manufactured from ultra-pure 18.8 tool steel All threads rolled for maximum strength with taper for pretensioning for optimum force distribution on all threads Hexagon socket drive for easy assembly Tensile strength over 1800 N/mm² (270,000 psi) Nickel coating for outstanding corrosion protection reusable Up to 35% stronger expansion steel than ARP bolts. Tightening torque in 3 stages. Last stage 85 Nm. incl. bag of moly paste Picture similar. Picture shows V10 engine.