Is your car making a humming or grinding noise, especially when turning? It might be a worn wheel bearing. This 2-pack kit gives you both front wheel hub bearing assemblies, which is super convenient since they often wear out around the same time. It's designed to fit a range of popular vehicles: the front of 2006-2012 Ford Fusion, 2006 Lincoln Zephyr, 2003-2008 Mazda6 (S and i models only), 2006-2011 Mercury Milan, and 2007-2012 Lincoln MKZ. For the REAR, it ONLY fits the AWD (All-Wheel Drive) versions of those Fusion, Milan, and MKZ models from those years – so check your drivetrain! It replaces OEM numbers like 16403EZ41A and cross-references to brands like Timken (HA590533). Includes the bearing, hub, and ABS sensor ring. A quality aftermarket repair that can save you a bundle compared to dealer parts. Good for DIYers with the right tools or for your trusted mechanic. Get your ride rolling quietly and smoothly again.