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About this part
What it does. Lemforder Control Arm Lemforder 638-45270 01 controls wheel movement and keeps the tyre in contact with the road.
Symptoms that point to this part
- Bouncy or floaty ride
- Clunking over bumps
- Uneven tyre wear
- Nose-diving under braking
Service note. Suspension components are replaced in pairs per axle wherever possible.
Fitment. Catalogued as fitting 2026 BMW 540i Xdrive, 2025 BMW 550e Xdrive. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.