1、OE Number: The referencing OE number of this engine coolant expansion tank is 22948113, which is molded and designed depend on the original data. 2、Fitment: The water coolant expansion tank is a replacement for Chevy Camaro 2016 and Up, for CTS 2003–2019, for ATS 2013–2019. 3、Main Function: Keep the engine running within the right temperature range, reduce pressure peaks in the cooling system, and reduce the burden on the engine. 4、High Performance: Effectively balance the role of tank pressure, intuitively know the current water volume of the tank, whether it is sufficient. 5、Durable Material: Made of PP material, durable, not easy to damage, stable performance, strong sealing, to ensure long term stable use.