TOYOTA 42460-60030 Rear Left Wheel Hub Bearing Assembly

The genuine part number TOYOTA 42460-60030 is a premium quality, complete rear left wheel hub bearing assembly (BEARING ASSY, RR). This precision component plays a vital role in the vehicle's suspension and running gear system, ensuring the smooth, friction-free rotation of the rear wheel while supporting the vehicle's weight and withstanding the radial and axial forces encountered during cornering.

Technical Specifications and Construction

The wheel hub bearing unit is manufactured to the strictest OEM standards, guaranteeing a perfect fit and long service life. The modern design integrates the wheel hub, the bearing, and a built-in ABS speed sensor or tone ring.

• Fitting Position: Rear axle, left side
• Material Quality: High-strength, heat-treated alloy steel for maximum load capacity and wear resistance
• Sealing: Equipped with a specialized multi-lip seal against dust and moisture, preventing contaminant ingress and lubricant leakage
• Lubrication: Factory pre-packed with maintenance-free, high-performance, high-temperature synthetic bearing grease

Role and Importance of the Wheel Hub Bearing

The rear wheel hub bearing provides the direct link between the suspension and the wheels. Its purpose is to securely transmit driving and braking forces while maintaining stable road holding. A defective or worn bearing significantly compromises driving safety, increases braking distances, and can destabilize the vehicle at higher speeds.

Typical Signs of Failure

Wear or damage to the wheel hub bearing may be indicated by the following symptoms, upon detection of which immediate replacement is recommended:

• Humming or growling noise: A metallic drone coming from the wheel that gets louder with increasing vehicle speed and often changes tone when cornering.
• Steering or body vibration: Under severe wear, excessive wheel play can transmit noticeable vibrations into the vehicle.
• ABS warning message: If the integrated ABS sensor is damaged or transmits inaccurate signals due to excessive bearing play, the ABS warning light may illuminate on the dashboard.
• Uneven tire wear: Changes in the wheel camber angle can lead to abnormal wear on the inner or outer edges of the tire.

To ensure road safety and protect surrounding suspension components, replacement of the wheel hub bearing should always be carried out by a specialist workshop in strict accordance with the manufacturer's tightening torques.