Replacement RT28080054 Front Steering Knuckle Left Hand Driver Side

The Replacement RT28080054 is a direct-fit, OEM-quality front steering knuckle for the left-hand (driver) side, designed to replace the original unit on the 2003–2008 Toyota Matrix. This knuckle serves as the central pivot point of the front suspension and steering system, connecting the wheel hub and bearing assembly to the strut and control arm while allowing the wheel to steer and articulate properly.

Manufactured to meet or exceed OEM specifications, this replacement knuckle restores proper steering geometry, suspension integrity, and wheel alignment capability. It is an ideal solution when the original knuckle is damaged due to a collision, corrosion, or fatigue.

Key Features:

• Direct OEM replacement — no modifications required for installation
• Engineered to restore factory steering geometry and suspension performance
• Left-hand (driver) side fitment
• Durable construction to withstand road stress and environmental exposure
• Cross-references OEM part numbers: 4321212370, 510070, 9690900, 4350

This knuckle is sold as a single unit and is compatible with front-wheel-drive configurations of the applicable model year range. Professional installation is recommended to ensure proper torque specifications and wheel alignment are achieved after fitment.