Description KEEPING YOUR ENGINE TOGETHER 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 B48 BMW/Mini 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 are manufactured in the U.S.A. and are 100% re-usable. Main studs require align honing to be done for installation. Comes with detailed install directions.
