Thread/Pitch Info Needed

[Chino886]

Can someone that is knowledgeable please tell me what the thread size/pitch on the top of the 400EX oil cooler is please, the fitting on the right it standing in front of the quad.

Thanks,
Chino886

[Chino886]

It is the one with the line drawn to it, on the top right.

[ZSK]

16mm - 1.50