Find the Thermostats & Housings you need to repair or maintain the cooling system in your 2017-2019 Chevy/GMC 6.6L L5P Duramax Higher temperature, stock, and lower temperature thermostats are offered to customize your cooling system to fit your needs. Find factory-style replacements and upgraded billet thermostat housings to fit your needs. XDP has top manufactures such as Dorman, Mishimoto, and many more to choose from.