Genuine BMW Coolant Expansion Tank Reservoir - E9X M3 (S65)

Stock replacement coolant tank for original cooling performance

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A leak from your E90, E92 or E93 M3 expansion tank can quickly turn into a major problem. The BMW plastic cooling components for the E9X M3 have a tendency to leak along existing seams. Heat cycles and exposure to the elements can take their toll on any plastic component. While there is no replacement interval for these, we do encourage you to proactively replace cooling system components before a problem might develop.

This is the latest Genuine BMW E9X M3 expansion tank design, as used on all 2008-2011 E90 M3 sedan, 2008-2013 E92 M3 coupe, and 2009-2013 M3 convertible, which includes all 2008, 2009, 2010, 2011, 2012 and 2013 model V8 BMW M3.

A new coolant reservoir cap is included, which is essential in maintaining system pressure and performance.

BMW Fitments:

3 Series
E90 / E91 / E92 / E93 (06-13) > M3
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