1. The expansion tank is a perfect replacement for 535i F11 20112016 and so on to better meet your demands.2. Your vehicle engine coolant recovery tank or expansion tank will store excess pressure and coolant as your radiator heats up.3. The reservoir helps keep your radiator full at all times and makes the radiator more efficient and effective.4. If your coolant is low, it may indicate a , using a pressure tester (not included) to check the system for smaller leaks.5. If your recovery tank is damaged, replace immediately to avoid a catastrophic cooling system failure.Name:Expansion tankPart number:17137647283, 17137601949, 17137553919, 17117639020,Applicable models:for for 535d F10 l6 3.0L Front Sedan 20142016for 535i F11 l6 3.0L Petrol Front Hatchback 20112016for 535i F10 l6 3.0L Petrol Front Sedan 20112016for 535i GT F07 l6 3.0L Petrol Front Hatchback 20102017for 640i F12 l6 3.0L Petrol Front Convertible 20122018for 640i F13 l6 3.0L Petrol Front Coupe 20122018for 640i Gran Coupe F06 l6 3.0L Petrol Front Sedan 20132019for 740i F01 l6 3.0L Petrol Front Sedan 20102015for 740Li F02 l6 3.0L Petrol Front Sedan 20112015for ActiveHybrid 5 F04 l6 3.0L Petrol Front Sedan 20122016for ActiveHybrid 7 F04 l6 3.0L Petrol Front Sedan 20132015Colour:BlackMaterial:PlasticPackage Contents:1x Expansion tankOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/ 13cm.