Feature: The coolant reservoir is attached to the radiator and the engine with hoses and is an important component of the cooling system, which holds the excess coolant fluid used to cool the engine. When a coolant expansion tank has any issues it can lead to issues that: Constantly low on coolant, coolant leaks, engine overheating. This is a non-OEM product, accessory only! Specification: Type: Coolant Radiator Reservoir Tank Part Number: 95269001 Material: Plastic Color: Transparent Position: Front To Radiator Inlet Hose Diameter: 39mm / 1.54" To Radiator Outlet Hose Diameter: 17mm / 0.67" Size: 21x14x9cm / 8.27"x5.51"x3.54"(L*W*H) Fitment for Buick Encore Base, Preferred 1.4L L4 - Gas 2021 for Chevrolet Trax LS, LT, LTZ 1.4L L4 - Gas 2015 2016 for Chevrolet Trax LS, LT, for Premier 1.4L L4 - Gas 2017-2020 for Chevrolet Trax LS, LT 1.4L L4 - Gas 2021 How to Replace: Turn off your car and allow your engine to cool down completely. Remove the bolts and the reservoir. Wrap a cloth around the hose before disconnecting it and allow the remaining coolant to flow back into the drain pan. Take out the damaged reservoir and drain the coolant off. Reinstall the coolant hose to the radiator and tighten the clamp. Connect the other end of the coolant hose to the new coolant reservoir and tighten the mounting bolts. Refill the tank with a new coolant and run the engine to check if functions well. Package Included: 1 x Coolant Radiator Reservoir Tank 1 x Cap