This is an OEM style replacement coolant recovery hose that runs from the water outlet on the driver side of the block to the coolant reservoir. The plastic fitting often breaks and will cause a leak. 

Fits: 2011-2016.5 Chevy Cruze 1.4L. Does not fit the 2016.5-2019 models with the 1.4 DI engine. 

Installation note: Verify that you have the fitting fully seated and clipped in before driving. The fitting may feel snug, but the clip needs to be fully seated. Dielectric grease on the o-ring will aid in installation ease.