Description STRONGER MAIN STUDS 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 favourite in the racing world. This ARP main stud kit for VW VR6 engines can help eliminate main cap walk and fretting and also protect 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 fit ALL VR6 engines and are great for race engines. Manufactured in the U.S.A. and 100% re-usable. Main studs require align honing to be done for installation. Manufacturer Part Number (s) ARP 204-5403 ENGINE FITMENT VW – VR6 ENGINES
