Part Type: Engine Coolant Thermostat. Premium Engine Coolant Thermostat. Type: Premium Thermostat. 2007 Chevrolet Suburban 2500 Engine: 6L V8 GAS; 187 Degree; OE Temperature; Seal included;. 2008 Chevrolet Suburban 2500 Engine: 6L V8 GAS; 187 Degree; OE Temperature; Seal included;.