Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
Upgrade to 5150's Custom Age 625+ Head Stud Kit Built by ARP!
Secure your engine with race-proven durability using the ARP Head Stud Kit the top choice for serious BMW performance enthusiasts and professional builders alike.
N55 Engines it is a MUST to drill and tap!
Two required per valve, necessary for use with certain supertech valves
This product was last offered at the strikethrough price on
08-13-2026
Quality retainers from Supertech
Quality retainers from Supertech
Quality retainers from Supertech
Two required per valve, necessary for use with certain supertech valves
Quality retainers from Supertech