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![Coolant Flush Kit | ES3046077 Coolant Flush Kit | ES3046077](https://cdn11.bigcommerce.com/s-9u0pekimaz/images/stencil/500x659/products/71858/237946/791569_x800__39418.1645223390.jpg?c=1)
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Just like any part of your BMW, you want to replace old, worn out parts with factory replacements. Your fluids are no exception. If either cold or hot weather has exposed the flaws in your factory cooling system, it's easy to lose anitfreeze.