SKU: 55111017AD Other Names: Thermostat, Secondary, Thermostat, Thermostat, Primary, Engine Coolant Thermostat Package, Engine Coolant Thermostat, Cylinder Head, Engine Coolant Thermostat, Thrmostat Description: Up to 04/16/12. Secondary. Includes 55111017aa thermostat and 04884572aa seal. Primary. See Catalog Note. Up to 04/06/12. 170 Degrees Fahrenheit.                                                                Condition: New Applications: SE 4x4. SE FWD. 4x2 FWD. 4x4. 4x2. 4x4. 70th Anniversary 4x2. 70th Anniversary 4x4. Replaces: 55111017AC