ARP headstud kit for the 1.9tdi.
This kit replaces the OEM bolt system with a higher tensile ARP stud and nut solution. Studs and nuts are regarded to be more reliable for clamping pressures over a conventional bolt.
Kit can be installed with without removing the head, you just need to replace one unit at a time and torque down. Cam caps also don’t need to be removed or modified for these if a thin walled socket is used.
Whilst these studs can be torqued to 135nm under ARP’s recommendations. We recommend torquing to 125nm.