I want to install one of those water temperature sensor adaptors, but I have read conflicting sizes to use. One thread said 1 3/8" (35mm) and another said 1 3/16" (30mm). Does anyone know what size the upper radiator hose is or which adaptor size to use? See link below for the water temperature sensor adaptor.

http://www.cardomain.com/item/GRE16401630

Rain Rain go away... Any idea!

buy the smaller one

Have one in my hand, it is 1 3/16"

Dmac - thanks - Brijoeall