OE Number: 19315240 1511072 55564891 55578419 55597008 Compatible Vehicles: Fits 1.6L (2012–2017), 1.8L 2HO (2010–2017), Trax 1.8L 2HO (2013–2018), Astra 1.8L (2007–2008), Meriva 1.8L (2007–2008), Aveo 1.6L LXV (2009–2010), Zafira 1.8L (2006–2008), G3 1.6L LXV (2008–2009).Not compatible with 1.4L LT Turbo engine variants. Package Includes: 1 x Thermostat Housing Assembly Installation Information: Removal of existing cooling system plumbing and adjacent engine accessories is required for access.Disconnect the negative terminal before beginning service.Remove the existing thermostat housing assembly and drain engine coolant as needed.Clean the mounting thoroughly.Install the unit using the manufacturer-specified torque values for the mounting bolts.Reconnect all associated coolant hoses and electrical connectors.Refill the cooling system to the specified level and bleed air according to the vehicle manufacturer's service procedure.