Replacement RT28080013 Front Steering Knuckle Passenger Side AWD

The Replacement RT28080013 is a front passenger-side (right-hand) steering knuckle designed for the 2004–2010 Toyota Sienna All-Wheel Drive models. This OEM-replacement knuckle restores the structural integrity of the front suspension and steering system, directly superseding Toyota OEM part numbers 4321108020 and 4778108020, as well as interchange reference 9692000.

What the Steering Knuckle Does:

The steering knuckle is a central front suspension component that houses the wheel hub and bearing assembly, and connects to the upper and lower control arms via ball joints. It also interfaces with the tie rod end, allowing the wheel to pivot for steering input while moving up and down with suspension travel. On AWD applications, it must also accommodate the CV axle shaft.

Key Features:

• Direct OEM Replacement — engineered to match original specifications for a precise, no-modification fit
• AWD-Specific Design — configured to accommodate the front CV axle shaft on all-wheel drive Sienna models
• Passenger Side (Right-Hand) — single-side replacement for the front right position
• OEM Cross-References: Toyota part numbers 4321108020 and 4778108020 (interchange: 9692000)
• Compatible with the complete front suspension system including tie rod ends, ball joints, and wheel hub/bearing assembly

After installation, a four-wheel alignment is strongly recommended to restore proper wheel geometry and prevent uneven tire wear.