FITS - Compatible with for BMW 525i 2004-2007 Sedan, 525xi 2006-2007 Sedan, 528i 2008-2010, 528xi 2008, 530i 2004-2007, 530xi 2006-2007 Sedan, 535i 2008-2010, 545i 2004-2005 Sedan, 550i 2006-2010, 645Ci 2004-2005, 650i 2006-2010, 650Ci 2006-2010. REFERENCE NUMBER - ALS1275, 34526760046, 34526771703, 0265007849, 5S10532. DETERMINE LOCKING UP OR NOT FAST- Our ABS sensors are able to measure the rotational speed of the wheels and pass them fast to the car's Engine Control Module (ECM), based on which the ECM determines if the wheels are locking up.
