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2001-2005 BMW 325i Expansion Tank - Original Equipment W0133-1797677
An expansion tank is an essential part of a BMW 325i's cooling system. When engine coolant heats up, it expands, increasing pressure. The expansion tank is designed as a receptacle for this excess coolant which overflows as it heats up. While it is necessary, the expansion tank can be a source of problems. Leaks in the expansion tank might not be noticed until the coolant has heated up, making a failure on the highway possible. Lost coolant also reduces the ability of the cooling system to do its job and draw heat away from the engine. If your expansion tank has become cracked or damaged in some other way, purchase an OE aftermarket expansion tank for the BMW 325i.
The Price is high, but this is the right part. Fits in with 2 bolts on pre '88 e30 bmw's.
Very satisfied with product and service. Would recommend to friends and family
I needed this in a hurry and my local BMW dealer wanted over $200.00. Parts geek sent me one for under $50.00 including 2nd day shipping. I installed it and it fits and works as good as the factory part. Thank you partsgeek.