Parts Number: 11537642854 Fitment: Compatible with 1 Series F20/F21 M140i (2016–2019), 2 Series F22/F23/F87 M240i (2017–2021), 3 Series F30/F31/F80 340i (2016–2019), and 4 Series F32/F33/F36 440i (2017–2020).Designed for vehicles equipped with the B58 engine. Package Includes: 1 x Thermostat Housing Assembly Installation Information: Disconnect the vehicle's before beginning installation.Remove surrounding engine compartment components as needed to access the thermostat housing location.Disconnect the electrical connector(s) attached to the thermostat housing.Loosen and remove the mounting fasteners securing the existing thermostat housing to the engine block or cylinder head.Carefully remove the old assembly and the mating is clean and free of residual gasket material.Position the thermostat housing assembly onto the mating , aligning all mounting points.Install and tighten the mounting fasteners to the manufacturer-specified torque sequence and value.Reconnect all associated electrical connectors and reinstall any removed components.Refill the engine coolant to the correct level and bleed the cooling system according to the vehicle manufacturer's procedure.