When you are replacing your thermostat, the o-ring often gets damaged or is degraded due to heat and years of exposure to coolant. Seal your new thermostat to the housing with a replacement unit. Cheap insurance that you will not have to go near the thermostat housing again for a many years.

During your thermostat change, fluid loss is inevitable. Be sure to browse the website to get the proper replacement for your vehicle sent directly to your door. Also, be sure to order a new thermostat housing, as the stock plastic units often get broken or warped during removal.