atlantiskiwi 73 Report post Posted December 20, 2014 I need to replace my oxygen sensors on 03 E39 530i. Has anyone had experience with this? Where is the best place to buy quality sensors and roughly how much? Quote Share this post Link to post Share on other sites
dkonsta1 109 Report post Posted January 16, 2015 If not in a rush try ebay. Bosch oem sensors would be your best bet. Locally probably fast but more expensive solution. Did you try hell bm ? Quote Share this post Link to post Share on other sites