2.5 TFSI Audi RS3 & TTRS stud bolt cylinder head ARP 21rs301 - сервиз

ARP stud bolt kit cylinder head for all 2.5L TFSI engines as installed in the Audi TTRS and Audi RS3. A MUST for all engines that run with increased boost pressure! ARP is the market leader in this field. The stud bolt are made of 8740 chromoly steel and have rounded threads. Up to 30 % stronger expansion steel than standard bolts. 100 % reusable. Now also available as BAR-TEK® High-Boost version! Recommended from 2 bar boost pressure. The ARP kit contains 12 stud bolt with matching nuts and ARP Moly Paste. Tightening torque in three stages. Last stage 115 Nm. The stud bolt require a 12mm internal variety nut. The High Boost version 16mm.