Part Type: Engine Coolant Temperature Sensor. Engine Coolant Temperature Sensor. 2008 Chevrolet Impala Submodel: 50th Anniversary Edition; Engine: 3.5L V6 FLEX; EngineVIN: K;. 2008 Chevrolet Impala Submodel: 50th Anniversary Edition; Engine: 3.5L V6 GAS; EngineVIN: N;.