Water Temp Sensor Adapter Size

Joined
Dec 12, 2018
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20
Location
USA
I want to add an aftermarket water temp gauge but I'm not sure what size adapter to order. I don't have access to my vehicle right now so I can't measure the upper coolant hose I plan to splice into (near the tstat). Options I have: 28mm, 30mm, 32mm, 34mm, 38mm. Anyone know the diameter of that upper hose?
 

LandLocked93

SILVER Star
Joined
Jun 11, 2018
Messages
1,145
Location
Colorado
IMG_20200723_222528882.jpg

I just measured them and they were between 1-3/8ths and 1.5 inches ID. +1/4" for OD The one in the middle was closer to 1-3/8ths, and the other two are right at 1.5, +/- a smidge.
edit: These are small-end, actual hose-size (not expanded) measurements.
 

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