Timken HA590140 Wheel Bearing and Hub Assembly - Front Left

Timken HA590140 Wheel Bearing and Hub Assembly Overview

The Timken HA590140 wheel bearing and hub assembly is engineered for reliable performance in select Lexus models. Designed to meet precise specifications, this assembly ensures proper fitment and durability for vehicles like the Lexus GS300, GS350, IS250, IS300, IS350, RC300, and RC350.

• 30 spline quantity for secure axle engagement
• 4 flange bolt holes with a 140 mm (5.512 inch) flange diameter
• 5 wheel studs for stable wheel mounting
• Wheel pilot diameter of 60 mm (2.362 inches) and brake pilot diameter of 62 mm (2.441 inches)
• Hub pilot diameter of 90 mm (3.543 inches) for precise hub alignment
• Flange offset of 50 mm (1.969 inches) to maintain proper wheel positioning
• Driven type assembly designed for rear-wheel or all-wheel drive configurations

Detailed Specifications and Compatibility

This Timken HA590140 assembly is specifically designed for driven axles, featuring a 30 spline count that matches the axle shaft for secure torque transfer. The 4-bolt flange with a 140 mm diameter and 50 mm flange offset ensures compatibility with the wheel hub and brake components. The 5 wheel studs provide a stable mounting surface for wheels, while the wheel pilot diameter of 60 mm and brake pilot diameter of 62 mm guarantee proper centering of the wheel and brake rotor. The hub pilot diameter of 90 mm supports accurate hub alignment, reducing vibration and improving wheel balance.

Compatible with Lexus GS300, GS350, IS250, IS300, IS350, RC300, and RC350 models, this assembly meets the exacting standards required for these vehicles, ensuring a proper fit and reliable operation.

Common Applications and Problem Resolution

• Replacement for worn or damaged wheel bearings causing noise or rough rotation
• Fixes wheel hub looseness or play affecting vehicle handling
• Resolves ABS sensor issues related to hub assembly wear
• Addresses uneven tire wear due to hub misalignment
• Eliminates vibration or wobbling caused by faulty hub components

Installation Notes and Tips

When installing the Timken HA590140 wheel bearing and hub assembly, ensure the vehicle is securely lifted and supported. Clean the mounting surface thoroughly to remove rust or debris. Torque the flange bolts to manufacturer specifications to avoid premature wear. Verify spline engagement and wheel stud alignment before final assembly. It is recommended to inspect related suspension and brake components during installation for optimal performance.

Quality Assurance and Warranty

Timken manufactures the HA590140 assembly to meet strict quality standards, using durable materials and precision engineering. This part is backed by Timken's limited warranty against defects in material and workmanship, providing confidence in its long-term reliability for Lexus GS and IS series as well as RC models.