Lamborghini Aventador Rear Steering Knuckle Control Arm 470505433H

Part Number: 470505433H

The 470505433H is a high-precision suspension component designed for the Lamborghini Aventador platform. Specifically, this part number corresponds to the rear steering knuckle (also known as a wheel carrier) that is compatible with models featuring the Lamborghini Rear-wheel Steering (LRS) system.

Technical Specifications

• Placement: Rear Axle (Specific to Left or Right side—verify “H” suffix orientation).

• Compatibility:

  • Lamborghini Aventador S (LP740-4)

  • Lamborghini Aventador SVJ (LP770-4)

  • Lamborghini Aventador Ultimae

• Material: High-strength forged aluminum alloy, chosen for its superior strength-to-weight ratio and ability to manage high unsprung mass.

• System Integration: Designed to house the hub bearing and provide mounting points for the rear toe-link actuators used in the active rear-steering setup.

Key Performance Features

• LRS Optimization: Unlike the fixed knuckles in early LP700 models, the “H” revision is engineered to handle the dynamic geometry changes of the active rear-steering system, which pivots the rear wheels by up to $3$ degrees.

• High Lateral Load Tolerance: Built to maintain camber and toe precision under the extreme lateral forces generated by the Aventador’s $355\text{/25 ZR21}$ rear tires.

• Thermal Management: The forged alloy construction assists in dissipating heat transferred from the massive carbon-ceramic brake rotors and calipers mounted directly to this unit.

Installation & Technical Note

Because this knuckle is part of the active rear-steering architecture, replacement is a complex procedure:

1. Actuator Calibration: After replacing the knuckle or associated control arms, the rear-steering actuators must be recalibrated using the Lamborghini LaRA diagnostic tool.

2. Bushings and Joints: Ensure that all integral bushings are inspected for tears. Using a hydraulic press is required if any pressed-in bearings need servicing to avoid fracturing the aluminum housing.

3. Alignment: A full four-wheel laser alignment is mandatory to synchronize the front steering angle with the rear LRS neutral position.