Cap Expansion Tank 2.0Bar (M3) (BMW 3 Series E90 / 5 Series E60 / F10 / X5 E70) is a crucial component within the cooling system of several BMW models listed in the product title. This cap is designed to maintain the pressure of the expansion tank at 2.0 bar, a key factor in controlling coolant flow and preventing overheating by allowing excess pressure to safely escape when necessary.
This expansion tank cap is intended for use on specific BMW vehicles, notably the 3 Series E90, 5 Series E60, F10, and X5 E70 models. Replacing the expansion tank cap is essential if the original part shows signs of wear, damage, or failure to maintain the correct pressure. Buyers should compare their existing cap’s pressure rating and design to ensure compatibility.
The part plays a direct role in preserving the integrity of the cooling system by regulating pressure in the expansion tank. When selecting this cap, it’s important to verify that the pressure specification (2.0 bar) matches the vehicle manufacturer’s requirements, as incorrect pressure ratings may result in cooling inefficiencies or potential damage.
- Compatible with BMW 3 Series E90, 5 Series E60, F10, and X5 E70 models
- Maintains system pressure at 2.0 bar to avoid coolant system overheating
- Essential for proper pressure regulation within the expansion tank
Not sure the code, size or specification matches? Use more Fuel Tank or Request a Part with a clear photo of the old part before checkout.





