Features: 1.According to the original factory specifications, replacing OE number is 11538648791 for reference. 2.The thermostat could perfectly fit for 228i 2014?2016, for 320i 2013?2016 and other models. 3.Follow the original standard strictly, design to have the same form, fit and function as original one. 4.Match for the original car well, you can directly replace the broken or old one, greatly saving your time. 5.Manufactured by superior quality ABS materials with stable performance and high reliability and strength. Specification: Item Type: Engine Coolant Thermostat_x005f_x000D_ Material: ABS_x005f_x000D_ OEM: 11538648791, 11537633476, 11537633477, 11538636595_x005f_x000D_ Fitment: _x005f_x000D_ For 228i 2014-2016_x005f_x000D_ For 320i 2013-2016_x005f_x000D_ For 328i 2012-2016_x005f_x000D_ For 328i GT 2014-2016_x005f_x000D_ For 428i 2014-2016_x005f_x000D_ For 528i 2012-2016_x005f_x000D_ For X1 2013-2015_x005f_x000D_ For X3 2013-2016_x005f_x000D_ For X4 2015-2016_x005f_x000D_ For X5 2016-2016_x005f_x000D_ For Z4 2012-2016 PackageList: 1 x_x005f_x000D_ _x005f_x000D_ Engine Coolant Thermostat Note: 1. Please double check the part number of your item, matching information is for reference only._x005f_x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!_x005f_x000D_ 3. Please note that the new type and old type of this product will be sent randomly,and make sure you will not mind before ordering.