Feature: 1. The replacing OEM number is 17137647283, 17137601949, 17137553919, 17117639020, 314 223 0013. 2. The expansion tank is a perfect replacement for 535i F11 2011‑2016 and so on to better meet your demands. 3. Your vehicle engine coolant recovery tank or expansion tank will store excess pressure and coolant as your radiator heats up. 4. The reservoir helps keep your radiator full at all times and makes the radiator more efficient and effective. 5. If your coolant is low, it may indicate a leak, using a pressure tester (not included) to check the system for smaller hard to find leaks. 6. If your recovery tank is damaged, replace immediately to avoid a catastrophic cooling system failure. Specification: Item Type: Coolant Expansion Tank Material: ABS Color: Black OEM: 17137647283, 17137601949, 17137553919, 17117639020, 314 223 0013 Fitment: Replacement for 535d F10 2014-2016 l6 3.0L Diesel Front Sedan Replacement for 535i F11 2011-2016 l6 3.0L Petrol Front Hatchback Replacement for 535i F10 2011-2016 l6 3.0L Petrol Front Sedan Replacement for 535i GT F07 2010-2017 l6 3.0L Petrol Front Hatchback Replacement for 640i F12 2012-2018 l6 3.0L Petrol Front Convertible Replacement for 640i F13 2012-2018 l6 3.0L Petrol Front Coupe Replacement for 640i Gran Coupe F06 2013-2019 l6 3.0L Petrol Front Sedan Replacement for 740i F01 2010-2015 l6 3.0L Petrol Front Sedan Replacement for 740Li F02 2011-2015 l6 3.0L Petrol Front Sedan Replacement for ActiveHybrid 5 F04 2012-2016 l6 3.0L Petrol Front Sedan Replacement for ActiveHybrid 7 F04 2013-2015 l6 3.0L Petrol Front Sedan. Package List: 1 x Coolant Expansion Tank Note: 1. Please double check the part number of your item, matching information is for reference only. 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!