MOOG 512399 Wheel Bearing and Hub Assembly Innovative roll form design ensures consistent and optimal preload. Precision Matched Components: Rigorously controlled manufacturing processes ensure exact matching of bearing raceways and rolling elements to consistently deliver superior performance and minimize noise and vibration. Engineered to overcome problems and deliver smooth, reliable performance. MOOG hub assemblies are performance proven, quality tested and are available for a broad range of foreign and domestic vehicles.