PREMIUM SERIES Wheel Hub Assemblies are precision-engineered for strength, smooth handling, and long-term durability. Each hub is built with a sealed, maintenance-free bearing and a forged steel flange to deliver OE-grade fitment and dependable performance. Designed to reduce vibration and maintain proper alignment under demanding conditions, every hub features induction-hardened studs for high tensile strength, CNC-machined hub faces for exact wheel seating, and corrosion-resistant coatings for extended life. Each unit is 100% quality tested for torque, runout, and radial load before it leaves the line. Whether you're restoring daily drive reliability or replacing worn components, PREMIUM SERIES delivers quiet, consistent performance with an easy, drop-in fit. Wheel Hub and Bearing Assembly WH513401 PRODUCT SPECIFICATIONS: (Flange Bolt Hole Quantity:3) (Flange Shape:Triangle) (Flange Bolt Hole Diameter (in):4.565) (Flange Diameter (in):5.435) (Flange Offset (in):1.654) (Wheel Stud Quantity:5) (Wheel Stud Size MM:M14x1.50) (Material:Steel)