Eli 173

Hey everyone, I have just purchased a new aluminium radiator for my R32 GTR Skyline which i was told is complete factory fitment BUT my thermo switch in the bottom corner of the radiator has the wrong thread pitch. The radiator is m14x2.0 and my switch is m14x1.75, i was just wondering if anyone can confirm that their thermo switch is genuine nissan and if so, whether the switch is m14x1.75? Any help would be much appreciated