Empis chromoly case studs provide superior and even clamping force required by todays hi-performance vw engines. These chromoly studs are made from high-grade chromoly and precision machined to resist stretch and fatigue. Each kit is complete with o.E. Style hardened washers and hex nuts. For single port heads. OEM NUMBER 043-198-035SP Diameter: 8mm Length: Stock Material: Chromoly8mm Head Stud Set for Single Port VW Standard Length