Thread: 2002 X5 E53 3.0i Coolant Reservior replacement and Air Intake Boot replacement
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Old 06-15-2012, 02:48 PM
bastereo bastereo is offline
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That thermostat down at the bottom of the tank is only for the atf cooler. It would not have caused your expansion tank to crack.
Your expansion tank cracked because it is plastic.

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