The replacement coolant temperature sensor is made for select 1998-2021 BMW and Mini applications. It reports engine coolant temperature to the engine computer, which uses it to adjust fuel delivery, ignition timing and idle speed.

Walker Products 211-1065 Coolant Temperature Sensor Features:

• Fits 1998-2001 BMW 750iL; 1999-2000 BMW 323i, 528i; 1999-2013 BMW 328i; 1999-2003 BMW 540i; 1999-2001 BMW 740i, 740iL; 2000 BMW 323Ci, 328Ci; 2000-2016 BMW M5
• Fits 2000-2018 BMW X5; 2000-2003 BMW Z8; 2001-2006 BMW 325Ci, 325i, 325xi, 330Ci, 330i, 330xi, M3; 2001-2007 BMW 525i, 530i; 2002-2005 BMW 745Li, 745i
• Also fits select BMW and Mini applications
• Female rectangle electrical connector with 2 blade terminals
• Built to OE replacement specifications