Black oxide coated PRO+ wheel hub bearng module are engineered and manufactured to be a true OE replacement part with enhancements to combat corrosion and failure. Each wheel hub assembly is tested to meet the increased demands of today's vehicles. All Pro+ wheel hub assemblies and bearings are factory lubricated and sealed, eliminating the need for maintenance. Upgraded ABS harnesses and thicker wire sheathing ensure protection from temperature fluctuations and signal degradation to fully restore your emergency braking system.