ARP is the go-to manufacturer in the automotive industry for engine fasteners. Whether it be OEM replacement parts or custom hardware, their dedication to consistent top notch quality has made them a favorite in the racing world.
This ARP main stud kit for VW/Audi 058 1.8T engines was designed by IE for use with an Integrated Engineering girdle kit. This kit features the longer length studs to accept a girdle plate and will help to eliminate main cap walk and fretting while also protectiing the threads in your engine block. ARP main studs are made from premium grade 8740 alloy steel which is rated far superior to many "aircraft" quality competitors. The studs are heat treated to 200,000 psi then thread rolled afterward, giving them twenty times better fatigue strength over studs threaded prior to treatment (a common practice with lesser quality studs). These parts are manufactured in the U.S.A. and are 100% re-usable. Main studs require align honing to be done for installation.