Reduce BMW engine vibration with INA OAP

OAP change: recommended vehicles Due to its advantages and although it is not an original component, Schaeffler REPXPERT technicians recommend replacing the original hard pulley with an INA alternator freewheel (OAP) in certain vehicles. This is the case with BMW cars manufactured between 2004 and 2011, where a significant improvement is achieved by switching to OAP. This includes models from all series of passenger cars (series 1, 3, 5, 6 and 7) and SUVs (X1, X3 and X5) equipped with engines that are widely used in the European car fleet. These are the engines M47 and N47 (diesel, between 1.6 and 2 liters and 4 cylinders) and M57 and N57 (diesel, between 2.5 and 3 liters and 6 cylinders). Three references for BMW’s diesel range Thanks to OAP’s ability to decouple the drive from engine rotation irregularities, not only quieter and more pleasant operation, but also longer service life for all system components. INA, Schaeffler’s specialist brand of engine components, covers the needs of BMW diesel engines from 2005 to 2011 with only three reference numbers: 535 0063 10, 535 0202 10 and 535 0203 10. Be sure to visit the REPXPERT catalog where you have access to all the information you need to install this component. Just enter the part number in the search window and click on the current listing you need.