BMW G20 G21 Rear Axle Control Arm Wishbone Track Strut Left Right N/O/S 6879659

BMW G20 G21 Rear Axle Control Arm Wishbone Track Strut Left Right N/O/S is an original component from the Control Arms and Ball Joints group, designed for operation in the vehicle's rear axle. The design allows for installation on both the left and right sides, which facilitates part selection and speeds up the service process. This is a solution for users who expect precise vehicle handling and stable suspension performance in daily operation.

Specifications and technical data

• SKU: 6879659
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6879659
• Substitutable numbers: 6879659, 31106879659, 6882552, 31106882552
• Location on the vehicle: Rear, Right, Left
• Part type: Control Arm & Ball Joint Assembly
• Category: Control Arms, Ball Joints & Assemblies

Purpose and function in the suspension system

The presented control arm is a rear suspension component responsible for maintaining proper wheel geometry and transferring loads between the chassis and the hub. Its placement on the vehicle covers the rear axle with the possibility of mounting on both sides, which allows the same component to be used on the left or right side depending on repair needs.

Thanks to the factory design characteristic of BMW, the control arm works with other suspension elements, ensuring predictable car reactions during braking, acceleration, and cornering. A properly selected arm geometry influences driving stability and even tire wear.

Technical characteristics and compatibility

The control arm belongs to the Control Arms and Ball Joints category, which means it has been designed to work under conditions of variable dynamic loads and vibrations transmitted from the road surface. The design intended for rear axle installation allows for proper wheel guidance in the horizontal and vertical planes, as well as cooperation with geometry adjustment elements, if present in the given system.

Designation as an original BMW part allows for precise fitting to the specific vehicle platform without the need for modifying mounting points. The product has an assigned OEM part number and interchangeable numbers, which facilitates verification of compatibility with a specific car configuration in service catalogs and part selection systems.

Condition, functional advantages, and service application

The item is offered in a used condition, which is a cost-effective solution for users looking for original components at a reasonable price. This type of control arm will work well both for standard replacement of a worn element and for post-accident repairs, where restoring the correct rear axle geometry is crucial.

The main advantages of using this control arm in the BMW G20/G21 include:

• maintaining the factory vehicle handling characteristics,
• secure fit to mounting points in the chassis and steering knuckle,
• possibility of installation on the left or right side of the rear axle,
• easier inspection and adjustment of suspension geometry after repair.

Installation and operational tips

When replacing the control arm, it is recommended to simultaneously check other elements from the suspension group, such as other control arms, ball joints, and metal-rubber bushings. After installation, it is necessary to perform a measurement and adjustment of the rear axle wheel geometry to fully utilize the design properties of the element and ensure even tire wear.

For proper part selection, it is worth using the OEM number and interchangeable numbers assigned to this control arm model, which minimizes the risk of error when ordering and speeds up the service process in the workshop.

Expanding knowledge about suspension and selecting other elements

If you want to better understand how the suspension works in your car, care about conscious component selection, and want to learn practical tips regarding the operation of shock absorbers, control arms, and stabilizers, use the advice contained in the article: Suspension system – a comprehensive guide to shock absorbers, control arms, and stabilizers.

If you are planning a comprehensive repair or upgrade of the suspension zone in your BMW and need other elements from the same group, such as additional control arms, ball joints, or mounting elements, check the available parts in the BMW Control Arms and Ball Joints category.