The ARP 623-2000 S/S BOLT KIT is a high-performance fastener set designed for automotive racing applications. Made by ARP in the United States, these 6-point, 3/8-16 x 2.000 bolts are specifically designed to provide superior clamping force for improved engine sealing. Ideal for enhancing engine performance and durability, this bolt kit is a must-have for racing enthusiasts looking to upgrade their engine components.