BRAND NEW IN BOX. 1 X ARP HEAD STUD KIT. Improved Cylinder Head Reliability. Improved head to block sealing. Muli-Layered Steel 18mm Head Gaskets 54450A (2 Gaskets, for left and right side). 18 mm Alignment Dowels – Manufactured 2003 – Jan 11, 2006. 20 mm Alignment Dowels – Manufactured January 12, 2006 and newer. Please contact prior to ask about thickness options. Photos are illustrative purposes only! Original product may vary! CP Cometic ACL Ferrea and ARP Kits. Custom Made Package Deals. Head and Main Studs. Local pickups are welcome for this item. Your address must be confirmed. Buyers who pay with unconfirmed addresses will not be accepted. We always look to satisfy our customers in whatever needs they may have.