APDTY 013321 Thermostat Complete With Upper & Lower Plastic Water Outlet Housing Fits 2005-2010 Ford Mustang w/4.0L (Replaces Ford 2L2Z-8592-BA, 5R3Z-8592-BA, RH148) Complete Kit Includes Everything Needed; Temp Sensor Sold Seperatley Includes Upper & Lower Thermostat Housing Includes New Thermostat Includes New Thermostat Seals Exact OE Fit Form & Function