1、Fitment: This coolant thermostat and housing is perfect replacement for Alfa Romeo 159 (2009‑11); Replacement for Alfa Romeo Brera (2008‑10); Replacement for Alfa Romeo Mito (2008‑15); Replacement for Alfa Romeo Spider (2009‑11); Replacement for Malibu (Before 2012). 2、OEM: The OEM of this coolant thermostat and housing is 55573003 for reference, please check the part number of your item before purchasing. 3、Practical Performance: Engine Thermostat can improve temperature regulation and control to keep the engine at its optimum temperature to help the engine operate more efficiently. 4、Exquisite Manufacturing: Elaborately produced by professionals, our coolant thermostat and housing has strong construction and is very solid, which is durable for a lasting performance. 5、Direct Replacement: Our coolant thermostat and housing conforms to OE specification and standard, and can directly replace the worn or broken part.