These cylinder head bolts allow higher resistance to high turbo pressures, which can potentially cause local cylinder head lift, thus causing overpressure in the cooling circuit. In the best case, resurfacing of the cylinder head as well as replacement of the cylinder head gasket will be necessary, in the worst case a leak may appear in the elements of the cooling circuit.
The installation of the bolts is plug and play (no modification is required to mount them), and can be done one by one without dismantling the cylinder head, while respecting the manufacturer's tightening torque specs.
However, we recommend that you dismantle the cylinder head and replace the cylinder head gasket (to ensure that the latter is in good condition before doing your mapping), and to clean the ports and valves at the same time.
The kit supplied consists of 10 reinforced head bolts. You need to reuse your original head bolt washers.
