Expansion Tank (Petrol) (BMW 1 Series E81/E87 / E82/E88 / 3 Series E90 / X1 E84 / Z4 E89) is a vital component in the cooling system of these BMW models. This expansion tank is designed to accommodate the coolant overflow as your engine heats up and expands, helping to maintain the correct pressure and coolant levels in the system. Proper function of this tank is essential to avoid overheating and potential engine damage.
This part fits a range of BMW vehicles, including the 1 Series variants E81, E87, E82, and E88, as well as the 3 Series E90, X1 E84, and Z4 E89. When comparing with your existing part, ensure the tank matches the petrol engine specification and the mentioned model codes to guarantee compatibility. The SKU BB-252328 corresponds specifically to this expansion tank for petrol engines from these model lines.
Check for physical similarities such as the position of hose connections and mounting points to confirm the right fit. If uncertain about compatibility or if your vehicle model is not listed, consider using a parts request or advice service to avoid incorrect purchases. Keeping your cooling system components, like this expansion tank, in good condition contributes to your vehicle’s efficient cooling management.
Need help matching this item to your vehicle? Use Vehicle Parts Finder, Request a Part or Platinum Sales Desk with your VIN, engine number, part number or clear photos.





