GM OEM Replacement Front and Rear Thermostat's 2001-2019 Duramax

These GM Thermostat's are a direct OEM replacement, both are included in the box for front and rear. 

*** Gaskets Included***

Front Thermostat - 97241129 185 Degree (OEM Temperature)

Rear Thermostat - 97241130 180 Degree (OEM Temperature)