Engine Coolant Reservoir Radiator Expansion Tank for 1999-2006 BMW E46 320i 323i 323Ci 325i 325Ci 325xi 328i 328Ci 330i 330Ci 330xi 603-535

OE#: 603-535. Replace OE#17137787039, 17111436413, 17117573781,
17132247553.
Package Included: 1 coolant reservoir + 1 surge cap.
(Notice: instruction is not included. Recommended you install under the guidance of professionals.
)^^Function: The coolant tank contains coolant fluid that is discharged from the cooling system attached to the engine. Pressure builds up and released when the coolant is hot and expanding through the radiator and when the engine cools down, the excess fluid flows back into the radiator from the coolant tank of your vehicle. If you are experiencing leaks, low level of coolant and overheating engine then you may have a problem with your coolant reservoir tank.
^^Compatible with: For
BMW: 98-06 3 E4604-11 X3 E832000 323Ci99-00 323i01-06 325Ci01-05 325i 2000 328Ci99-00 328i01-05 330Ci01-05 330i01-05 330Xi 06-08 X3 L6 3.0L 04-05 X3. Please check the second main picture to confirm engine coolant reservoir whether compatible with your car.
^^High-quality: The coolant reservoir expansion recovery tank with cap is made from high quality plastic materials can withstand excessive heat and vibration, light and durable. While this is not a genuine OEM part, it is a direct replacement and good value.
^^After-Sales Service: We offer 24 hours customer service and 1 year product service, If you are encounter product installation, product quality and other problems, please feel free to contact us.