Transmission Thermostat (Mounted in Expansion Tank) for E46 X3 X5 Z4

This Automatic Transmission Thermostat mounts in the coolant expansion tank and helps to regulate the transmission coolant temperature. It is common for this item to break while replacing the expansion tank. This fits E46 323i 325i 328i 330i, X3 2.5i 3.0i, X5 3.0i, Z4 2.5i 3.0i 3.0si.

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This item fits the following BMWs:
1999-2005 E46 BMW 323i 323ci 328i 328ci 325i 325ci 325xi 330i 330ci 330xi
2004-2006 X3 BMW X3 2.5i X3 3.0i
2000-2006 X5 BMW X5 3.0i
2004-2008 Z4 BMW Z4 2.5i Z4 3.0i Z4 3.0si