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      02-27-2022, 01:14 PM   #4
joesid
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Drives: 2016 BMW 340i xDrive
Join Date: Nov 2020
Location: Washington, DC

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I'm pretty sure it's any F25 with a build date of 02/2015 or later. My mom's X3 was built 01/2015, and I'm under the impression it's got the bad tensioner. That cutoff also applies to the 10year/125k thermostat warranty.
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F25_x313.50