Features: Ensures optimally engine performances with coolant expansion tanks, providing perfect compatibility and seamlessly installation. Crafted from heat resistant plastic, this expansion tanks boasts excellent pressure resistance and corrosions protections, ensuring long term durability without deformation. Perfect for daily urban commutes or long highway journeys, this coolant expansion tanks maintains engine temperature stability, preventing overheating even in extreme weather conditions. With its lightweight design, this tanks reduces overall vehicle weight, enhancing performances for a safe, ecofriendly drive. Installation is easy with this water bottle's user friendly designs, offering peacing of mind to DIYer enthusiasts and seasoned drivers alike by maintaining optimally engine temperature control. Specifications: Component:Plastic Size:Approx.26cm/10.24inch For F20 F21 114d; 114i 2011/11-2019/12; 116d, 116i, 118d, 120d 2010/12-2019/12; 118i 2010/11-2019/12; 120i 2015/03-2019/12; 125d, 125i 2011/08-2019/12 For F23 F22 218d 2014/01-2019/12; 218i 2015/03-2019/12; 220d; 220i 2013/10-2019/12; 225d 2014/01-2019/12; 230i 2015/09-2019/12; M240i 2015/09-2019/12 For F30 F31 F34 F35 318d 2011/05-2019/12; 325d; 328i 2011/04-2016/07; 330d; 335i 2011/04-2019/12; 316d 2011/05-2015/12 Part Number:17137642158/17137609469 Package Includes: 1pcs Coolant Expansion Tanks note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual coloring of the item. Thanks for your understandings.