Replacement RT28080018 Front Left Steering Knuckle Assembly Driver Side

The Replacement RT28080018 is a front left (driver side) loaded steering knuckle assembly engineered as a direct OEM replacement for the 2013–2016 Toyota Avalon. This complete assembly includes the knuckle, wheel hub, wheel bearing, and dust shield — providing everything needed for a thorough, one-stop suspension repair without the need for a hydraulic press or separate component sourcing.

The steering knuckle serves as the critical link between the vehicle's suspension and steering systems, mounting the wheel hub and bearing while allowing the wheel to turn left and right for steering and move up and down for ride compliance. Worn or damaged knuckles can cause hard braking, difficult wheel turning, uneven tire wear, vehicle pulling, and wheel vibration or wobble.

Key Features:

• Direct-fit OEM replacement — engineered to match original dimensions and mounting points
• Loaded assembly — includes knuckle, hub, bearing, and dust shield
• Front left / driver side fitment
• Durable steel construction for long service life
• No hydraulic press required for installation

Cross-Reference / OEM Part Numbers:

• Timken: 510063
• GSP: 9690300
• Toyota OEM: 4324628020
• 4778 (alternate cross-reference)

Replacing the steering knuckle assembly restores proper suspension geometry and steering feel. A wheel alignment is recommended after installation.