Front Lower Control Arm for BMW 6 Series 7 Series 31106861157 31106861158

Description:

31106861157 (31 10 6 861 1157): Left front lower control arm (driver's side), forged aluminum alloy assembly, integrated hydraulic preloading rubber bushing+non replaceable ball head; Only compatible with xDrive four-wheel drive version, rear wheel drive not available

31106861158 (31 10 6 861 1158): Right front lower front control arm (passenger side), strictly symmetrical to 1157 and absolutely not interchangeable; Configuration restrictions are the same as the left component

Adapt to chassis, year, and configuration limitations
G11/G12 7 Series (2016-2022, limited to xDrive four-wheel drive, excluding special versions of 730i/740i rear wheel drive, M760i rear wheel drive, air suspension/active suspension)
Covering 740 e xDrive、745e xDrive、740i xDrive、750i xDrive、M760i xDrive、Alpina B7 xDrive
G32 6 Series GT (2018-2020, only available for 640i xDrive GT, no rear wheel drive version compatible)
Not applicable to any rear wheel drive, M high-performance independent suspension, active roll control (ARC), or original air suspension models; It must be confirmed that the vehicle is xDrive four-wheel drive

The function of the control arm
The control arm is a key component that connects the wheels to the body/subframe, and belongs to the skeleton of the suspension system.

1. Support the wheels and fix them in place
Keep the wheels at the correct angle (camber, toe in, caster).
Ensure that the wheels do not deviate or shake.

2. Transmitting force and buffering vibration
Endure the tensile, compressive, and lateral forces during vehicle acceleration, braking, and steering.
Filter road bumps and reduce noise and vibration through the lining (rubber sleeve) and ball head at both ends.

3. Ensure precise steering and stable driving
The control arm is not loose or deformed, so that the steering wheel does not drift, shake, or deviate.
When driving at high speeds or turning corners, keep the wheels on the ground to improve handling and safety.

4. Protect the tires and reduce uneven wear
Aging and deformation of the control arm can lead to tire eating, uneven wear, and abnormal noise.
A good control arm can extend tire life.

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