Specifications
Socket Size(s) 1/2 12pt, 3/16 Allen
M11
ARP Pro Series cylinder head studs are cold-forged to ensure molecular integrity.
Theyre heat-treated prior to thread rolling and machining. ARP Pro Series kits are also available with 12-point nuts, and all kits come complete with hardened parallel washers for an even load distribution and accurate torque readings.
4G63 1994 - Onwards