Timken HA590338 Wheel Bearing and Hub Assembly - Rear

Timken HA590338 Wheel Bearing and Hub Assembly Overview

The Timken HA590338 wheel bearing and hub assembly is engineered for reliable driveline performance on select Lexus and Toyota models. Designed to meet precise specifications, this assembly ensures proper fit and function for vehicles like the Toyota Highlander and Lexus RX series.

• Compatible with Lexus Highlander, RX330, RX350, RX400h, and Toyota Venza
• Driven type hub assembly with 26 splines for secure drivetrain connection
• Features 5 wheel studs and 4 flange bolt holes for stable wheel mounting
• Wheel pilot diameter of 2.362 inches (60.00 mm) and brake pilot diameter of 2.441 inches (62.00 mm)
• Hub pilot diameter measures 3.125 inches (79.40 mm) for precise hub alignment
• Flange offset of 2.835 inches (72.00 mm) and flange diameter of 5.984 inches (152.00 mm)
• Bolt circle diameter of 4.500 inches (114.30 mm) for exact bolt pattern compatibility

Technical Specifications and Features

The Timken HA590338 assembly is a driven wheel bearing and hub unit designed to replace worn or damaged components on compatible Lexus and Toyota vehicles. It includes 26 splines that engage with the axle shaft, ensuring torque transfer and drivetrain integrity. The assembly’s 5 wheel studs and 4 flange bolt holes provide a secure mounting surface for wheels, while the precise pilot diameters for both wheel and brake components guarantee proper centering and alignment.

With a flange offset of 2.835 inches and a flange diameter of nearly 6 inches, this hub assembly maintains correct wheel positioning relative to the suspension and brake system. The bolt circle diameter of 4.5 inches matches factory specifications for the listed models, ensuring straightforward installation without modification.

Compatible Vehicles and Applications

• Replacement hub assembly for Lexus Highlander models
• Suitable for Lexus RX330, RX350, and RX400h driveline repairs
• Compatible with Toyota Venza wheel bearing and hub needs
• Ideal for addressing wheel bearing noise, vibration, or looseness
• Used in driveline maintenance to restore proper wheel rotation and safety

Installation Notes and Tips

• Verify vehicle compatibility with part number HA590338 before installation
• Ensure proper torque specifications on flange bolts and wheel studs during assembly
• Inspect axle splines and mating surfaces for wear prior to installation
• Use appropriate tools to avoid damage to the bearing and hub assembly
• Check wheel alignment and balance after installation for optimal performance

Quality Assurance and Warranty

Timken manufactures the HA590338 wheel bearing and hub assembly to meet OEM standards for durability and performance. This part undergoes rigorous quality control to ensure reliable operation in demanding driving conditions. While specific warranty details may vary, Timken typically offers coverage against defects in materials and workmanship, providing confidence in the product’s longevity and fitment.