<p><strong>BMW E53 X5 3.0i M54 Electric Auxiliary Water Pump (2001–2006)</strong> — OEM replacement pump for 6-cylinder models. This used unit maintains proper coolant circulation to the heater and engine bay components, ensuring consistent cabin heat and engine thermal management.</p> <ul> <li>Fits BMW X5 3.0i with M54 engine (2001–2006)</li> <li>Electric-powered for independent operation</li> <li>OEM part — direct replacement quality</li> <li>Used but tested condition</li> </ul> <p>A functional auxiliary pump prevents heater performance loss and supports engine cooling efficiency — critical for reliable winter operation and long-term engine health.</p>