Stant’s XACTStat thermostats are designed for customers that demand the exact OEM thermostat as a replacement product. XACTStat thermostats include all the features that make them original equipment equivalent parts. Jiggle pins and check valves for air venting, integral seals and integrated water outlet housings. Some even have ports for attaching coolant temperature sensors. So if you want thermostats that are EXACTLY the same as the original part, order XACTStat thermostats from Stant.