2013 Acura ILX Engine: 2.4L L4;. 2014 Acura ILX Engine: 2.4L L4;. 2015 Acura ILX Engine: 2.4L L4;. Part Type: Engine Coolant Pipe O-Ring. Engine Coolant Thermostat Housing Gasket. Eng Coolant Gasket. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.