BMW Cooling Radiator Expansion Tank E39 E38

BMW Cooling Radiator Expansion Tank E39 E38 Replacement for BMW Replacement for BMW 525i E39 2.5L L6 2001-2003 Replacement for BMW 528i E39 2.8L L6 1999-2000 Replacement for BMW 530i E39 3.0L L6 2001-2003 Replacement for BMW 728i E38 2.8L L6 1995-2001 Package Included: 1 x Engine Coolant Recovery Bottle When do you need to replace? The expansion tank is leaking. There is a blockage inside the expansion tank, which affects the normal flow of coolant. The expansion tank material is aged, cracked or damaged.