Description
Ensure the structural integrity and ride quality of your SUV with this Genuine Bentley Rear Upper Right Control Arm. This authentic factory-original part (4M0505398P) is a vital link in the Bentayga’s sophisticated multi-link rear suspension, specifically engineered to manage camber and lateral forces on the passenger side.
Forged from high-grade aluminum to minimize unsprung mass, this arm allows your air suspension to react with precision to road imperfections. It features a factory-integrated, high-density rubber bushing tuned to isolate the cabin from road noise while providing the rigid support necessary for the Bentayga’s heavy curb weight. Replacing a worn right-hand upper arm is essential to correct "floating" sensations at high speeds and to protect your expensive performance tires from uneven wear.
Vehicle Fitment & Compatibility:
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Bentley Bentayga: 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
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Engines: W12, V8, V8 Diesel, and V6 Hybrid models.
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Placement: Rear Suspension, Upper Position, Right Hand (RH).
Part Number Reference:
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Current Part Number: 4M0505398P
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Related Numbers: 4M0-505-398-P, 4M0.505.398.P
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Note: This part is side-specific for the Right-Hand (RH) rear position.
Pro Tech Tip: Because this arm dictates the rear wheel's angle, any wear here directly impacts your steering alignment. Mandatory: A 4-wheel laser alignment is required immediately following installation to reset the rear toe and camber. Caution: To avoid "bushing wind-up," which causes the rubber to tear prematurely, do not perform the final tightening of the mounting bolts while the vehicle is lifted. The arm must be torqued to spec only when the vehicle is resting at its natural ride height on the ground.



