hi guys, I have to change the water pump out this weekend, so while I'm in there, I thought I might as well do the thermostat, when I went to order one, there are many different temps from 160, 180 or 195, I have an 97 B3500 which is converted into a camper van, any advice would be greatly appreciated,,,, thank you,,,,

 

Stock is 195, go with that.

 

Unless you live in a hot climate then go with the 180* And don't forget to get the bypass hose.

 

I run a 195.