Just trying to find out which thermostat I need for a 1992 Civic CX 1.5l D15b8 with a manual transmission. Rock auto offers 4 different temps.195 deg , 192 deg. , 180 deg. , and 170 deg.Also they have slightly different diameters available. If you know anything about this the help would be appreciated. I am doing a timing belt,tensioner and water pump change soon so I figured while I had the coolant drained I'd do the thermostat too.Thanks

 

well since you live way up north i suggest a 192deg so you will have good heat for the harsh winters.

 

Use the same temperature as stock, I think they are all 195. When you get the old one out, it will be marked with a temperature, possibly in degrees C which you'd need to convert. 192 is close enough to 195 not to worry about it.