A spark plug with shuttle electrode for an internal combustion engine , said spark plug comprising at least one of the electrodes and a ceramic insulator housed in a metal base which has a base threading , said spark plug also comprising a lamination cavity configured to be connected to a combustion chamber which the internal combustion engine comprises through a lamination duct while a lamination injector can directly or indirectly inject into said cavity a pilot charge previously pressurized, said charge consisting of a an oxidizer-fuel mixture which can easily be ignited by means of a spark, said spark plug comprising • at least one central electrode which opens into the lamination cavity ; • at least one shuttle electrode which is entirely or partly made of an electrically conductive material and which is partially or entirely housed with a small clearance in the lamination duct , said shuttle electrode being interposed between the central electrode and a ground electrode and having, on the one hand, a chamber-side end which faces the ground electrode and which is configured to be exposed to the pressure prevailing in the combustion chamber and, on the other hand, a cavity-side end which faces the central electrode and which is exposed to the pressure prevailing in the lamination cavity , said shuttle electrode being capable of translating in said duct under the effect of the gas pressure either towards the lamination cavity when the pressure prevailing in the latter is lower than the pressure prevailing in the combustion chamber , or towards the combustion chamber when the pressure prevailing in the latter is lower than the pressure prevailing in the lamination cavity ; • at least one cavity-side shuttle electrode abutment which determines the position of the shuttle electrode closest to the lamination cavity ; • at least one chamber-side shuttle electrode abutment which determines the position of the shuttle electrode closest to the combustion chamber . • at least one central electrode which opens into the lamination cavity ; • at least one shuttle electrode which is entirely or partly made of an electrically conductive material and which is partially or entirely housed with a small clearance in the lamination duct , said shuttle electrode being interposed between the central electrode and a ground electrode and having, on the one hand, a chamber-side end which faces the ground electrode and which is configured to be exposed to the pressure prevailing in the combustion chamber and, on the other hand, a cavity-side end which faces the central electrode and which is exposed to the pressure prevailing in the lamination cavity , said shuttle electrode being capable of translating in said duct under the effect of the gas pressure either towards the lamination cavity when the pressure prevailing in the latter is lower than the pressure prevailing in the combustion chamber , or towards the combustion chamber when the pressure prevailing in the latter is lower than the pressure prevailing in the lamination cavity ; • at least one cavity-side shuttle electrode abutment which determines the position of the shuttle electrode closest to the lamination cavity ; • at least one chamber-side shuttle electrode abutment which determines the position of the shuttle electrode closest to the combustion chamber . <EOS>