ARP Main Stud Kit for Vauxhall / Opel 2.0LARP Main Stud Kit Universal Fitment Part #: 209 4301 Overview The ARP Main Stud Kit for Vauxhall and Opel 2. 0L 16V engines is a high quality fastening solution designed to enhance the reliability and strength of your engine's critical components. Crafted specifically for 2. 0L 16 valve engines from Vauxhall and Opel, this kit helps ensure that your engine maintains optimal clamping force even under demanding conditions. Whether you're building a high