Preorder: BMW N54 ARP Head Stud Kit - Custom Age 625+

Preorders expected to ship December 2026. This genuine ARP Head Stud Kit is tailored specifically for the N54 engine. It's crucial to emphasize that this head stud kit is NOT the typical ARP2000 stud, but rather the Custom Age 625+ stud which is ARP's best material they make. We are the only store with access to sell the Custom Age 625+ head stud kit for the N54 from ARP. The Custom Age 625+ kit includes: (14) 11mm ARP Head Studs (14) ARP Nuts for 11mm Studs (14) ARP Washers designed for 11mm Studs ARP Ultra-Torque Fastener Lubricant Installation of the Custom Age 625+ kit requires drilling and tapping the four 9mm holes in the engine block to enlarge them to 11mm, ensuring compatibility with all 14 studs.