BMW 5 (E60), 5 Sedan (E60) 520 i. BMW 5 (E60), 5 Sedan (E60) 523 i. BMW 6 Convertible (E64) 2004.09 - 2007.08 630 i Convertible 2996ccm 190kW 258HP (Petrol). BMW 6 Convertible (E64) 2007.09 - 2010.08 630 i Convertible 2996ccm 200kW 272HP (Petrol).
The COOLANT COMPENSATION TANK for BMW E60, E61, E63, and E64 models would be the best fit for those requiring proper coolant management and ensuring vehicle longevity.
