ARP2000 Head Stud Kit 11mm SOHC 99071AB740 STI EJ257 MY12-21 (Starting Production

STI EJ257 MY12-21 (Starting Production Date Jan 21

Note that these viscous units are rebuilt used cores that have been fully reconditioned and set to the specified value

This is a double cone synchronizer with either 6 raised tabs to engage matching holes in the gear or 4 tabs depending on the application

or the bearing shows signs over high temperatures

ARP2000 Head Stud Kit 11mm SOHC 99071AB740 STI EJ257 MY12-21 (Starting ProductionCUTTING EDGE FASTENER TECHNOLOGY ARP head studs are a critical component for maximum reliability when building for power. A head stud ensures more accurate torque loading and consistent head gasket clamping forces. When compared to a traditional head bolt a smaller portion of the fastener torque is wasted in friction and fastener twist so more force can be applied toward sealing the head gasket. Head gasket sealing is more often than not the Achillies