Our ZZP LTG silicone hose replaces the stock rubber/plastic coolant hose that runs from the overflow bottle to the radiator and head. In GM's infinite wisdom they used plastic to join the rubber on the stock hose, and due to the harsh under-hood conditions these will crack and leak coolant. Our silicone hose is fully molded all the way through and made of 4 layers of silicone meaning it will last longer than you own the car. This hose is a direct replacement and uses the stock constant tensioner clamps. Takes 5 minutes to replace and you'll no longer have to worry about when the stock piece will break. Fits: Cadillac ATS 2.0, Cadillac CTS 2.0, and Camaro 2.0Product update note February 2023: We now include German style hose clamps with our silicone hoses. These style clamps have rolled edges and a non-slotted band to eliminate hose extrusion.