Lamborghini Aventador Rear Steering Knuckle Control Arm 470505433E

Part Number: 470505433E

The 470505433E is a high-strength suspension component for the Lamborghini Aventador platform. While the later “H” revision is typically associated with the active rear-steering (LRS) models, the “E” revision is a core component found in the earlier Aventador LP700-4 and LP720-4 series. It serves as the primary wheel carrier, providing the mounting interface for the rear hub, braking system, and the pushrod suspension arms.

Technical Specifications

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

• Compatibility: * Lamborghini Aventador LP700-4 (Coupe and Roadster).

  • Lamborghini Aventador LP720-4 (50th Anniversary).

• Material: Forged Aluminum Alloy, engineered for extreme rigidity to maintain wheel alignment under the $690\text{ Nm}$ of torque produced by the V12 engine.

• Suspension Type: Designed for the signature Pushrod Suspension system, featuring mounting points for the upper and lower wishbones.

Key Performance Features

• Unsprung Weight Optimization: The forged construction minimizes unsprung mass, allowing the Öhlins pushrod dampers to react more quickly to road imperfections.

• Brake Integration: Features reinforced mounting lugs for the massive $400\text{ mm}$ Carbon Ceramic Brake (CCB) calipers.

• Geometric Precision: Maintains strict toe and camber tolerances, which is vital for a vehicle capable of $350 \text{ km/h}$, ensuring the rear tires ($335\text{/30 ZR20}$) remain flat against the tarmac during hard acceleration.

Technical Installation & Service

1. Bushing Inspection: The “E” revision utilizes high-density rubber-to-metal bushings. If there is any cracking or “play” in the rear end, these bushings should be inspected.

2. Wheel Bearing Torque: When reassembling, the rear hub nut must be torqued to the exact factory specification ($600\text{ Nm}+$ depending on the specific model year) to prevent premature bearing failure or wheel oscillation.

3. Alignment Requirements: Any removal of the steering knuckle or control arms necessitates a full four-wheel laser alignment. On the Aventador, even a $0.5\text{°}$ variance in rear toe can significantly impact high-speed stability and tire wear.