I had to change my thermostat and over the fall, my buddy pulled out the thermostat and tossed. I bought a kit by Sierra 18-3551 Thermostat - replaces O.E.# 59137 I went to put in and its too wide and will not fit. I am wondering if there is a slight size difference in buying OEM 8M0089715 Driving me nuts. Any help would be amazing. The thermostat housing part number is 87710. Hope this is enough info.
