Bentley Bentayga Rear Upper Left Control Arm 4M0505397P

Ensure your vehicle maintains its world-class handling and ride comfort with this Genuine Bentley Rear Upper Left Control Arm. This authentic factory part (4M0505397P) is a critical link in the Bentayga’s sophisticated multi-link rear suspension system, responsible for managing camber and lateral forces during cornering.

Precision-engineered from high-strength forged aluminum, this arm minimizes unsprung weight while providing the structural integrity required to manage the Bentayga’s substantial power and curb weight. It features a factory-integrated, high-density rubber bushing that is specifically tuned to isolate the cabin from road noise and vibrations. Replacing a worn or damaged upper control arm is essential for preventing uneven tire wear and restoring the tight, responsive feel of the original factory steering and suspension geometry.

Vehicle Fitment & Compatibility:

• Bentley Bentayga: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024

• Engines: 6.0L W12, 4.0L V8, V8 Diesel, and V6 Hybrid models.

• Placement: Rear Suspension, Upper Position, Left Hand (LH).

Part Number Reference:

• Current Part Number: 4M0505397P

• Related Numbers: 4M0-505-397-P, 4M0.505.397.P

• Note: This part is side-specific for the Left-Hand (LH) rear position.

Pro Tech Tip: Rear suspension components on the Bentayga are vital to the vehicle’s active air suspension performance. Mandatory: A full 4-wheel laser alignment must be performed immediately after installation to ensure the rear toe and camber are within Bentley’s strict factory tolerances. Caution: To protect the lifespan of the new bushing, do not perform the final torque of the mounting bolts while the vehicle is suspended on a lift. The arm must be tightened while the vehicle is at its normal static ride height to avoid "bushing twist" and premature failure.