Carquest Premium hub assemblies have been rigorously quality tested to ensure they meet Original Equipment (O.E.) specifications and provide the same reliability and durability expected from OE parts. All Carquest Premium hub assemblies are coated with an obsidian e-coating that protects the hub from rust and corrosion. -Engineered for OE fit, form and function -Fully coated with an obsidian e-coating for enhanced rust and corrosion prevention -High-quality steel and surface treatments for proper fit and endurance -Roll-form bearing design applies exact preload for increased durability (where applicable) -Bearings and seals are engineered to the requirements of each specific vehicle application -Superior ABS sensors with matching signal and enhanced cord insulation for durability (where applicable)