Magneti Marelli by Mopar 1AMH512357 Wheel Bearing and Hub Assembly O.E. design eliminates the need for re-lubrication and Magneti Marelli hubs feature cooler-running non-metallic retainers Rigorously controlled manufacturing processes ensure exact matching of bearing raceways and rolling elements to consistently deliver superior performance and minimize noise and vibration All Magneti Marelli hub assemblies and bearings start with premium steel and undergo computer-controlled heat treatment to deliver lasting performance