For me, any pump with over 50k miles gets replaced. I replaced the thermostat recently on mine. However, the previous owner had recently replaced it. I'm debating the same issue. I'm ready for a coolant system refresh. 1-2 or more parts to order. CCV, coolant, sensors, and anything I can get done under the intake.

Would you go stock? Or upgrade to a Stewart pump? Metal impeller and better flow for summer cooling.

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'06 X5 3.0i - bought @143,123 miles (12/26/20)