Mazda6; w/Turbo. Cap for the Hybrid Inverter Coolant Reservoir. Engine Cooling. Exc.Mexico Built. From 10/19/2018. Location-Filler Neck. Location-Reservoir. Mexico Built Vehicle. Radiator Cap. Drive Motor Inverter Coolant. Filler. Included with: Connector pipe, Filler assembly, Filler pipe, Reservoir, Water manifold.