Control Arm BMW X3 G01 X4 G02 Wishbone Rear Left Right N/O/S Suspension 6871507

BMW X3 G01 X4 G02 Rear Control Arm Left Right 6871507 is a component from the Control Arms and Ball Joints category, designed for the rear suspension of both sides of the vehicle. It enables precise wheel guidance, stable geometry, and predictable vehicle behavior during acceleration, braking, and cornering. Thanks to its construction aligned with BMW solutions, this control arm is suitable for discerning users expecting consistency with the factory suspension system.

Specifications and technical data

• SKU: 6871020
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6871020
• Substitutable numbers: 6871020, 33306871020, 6871507, 6871508
• Location on the vehicle: Rear, Right, Left
• Category: Control Arms, Ball Joints & Assemblies

Purpose and Function in BMW Suspension

The presented rear control arm is designed for operation on the right and left side of the rear axle, allowing for flexible application depending on service needs. It is responsible for maintaining the correct position of the wheel hub relative to the body, and thus for preserving proper wheel alignment and camber. In practice, this translates to:

• stable handling of BMW X3 G01 and X4 G02 at higher speeds,
• even tire wear due to maintained geometry,
• better vehicle control during dynamic maneuvers.

By utilizing solutions typical for the BMW brand, the control arm works with other suspension components, creating a cohesive, predictable driving system.

Construction and Technical Characteristics

The control arm belongs to the group of elements responsible for transferring loads between the wheel and the body, as well as for damping vibrations and compensating for suspension movements. Its construction includes:

• geometry adapted to the BMW X3 G01 / X4 G02 platform,
• mounting points enabling cooperation with ball joints and other suspension components,
• stiffness ensuring precise wheel guidance while limiting unwanted play.

A component configured in this way allows for the preservation of factory driving characteristics, which is particularly important in premium cars where both comfort and predictable steering response are crucial.

Vehicle Placement and Benefits of Correct Installation

The placement of the control arm in the rear of the vehicle on both sides of the axle means it directly influences body stability and passenger ride comfort. A correctly selected and installed component:

• limits unwanted wheel displacement when driving over uneven surfaces,
• improves steering precision in corners,
• reduces the risk of vibrations and knocking originating from the rear suspension.

For the user, this means more predictable vehicle behavior and better feel of the rear axle, which is important both in everyday use and during dynamic driving.

Original BMW Origin and Used Condition

The control arm comes from the BMW offering, which guarantees compliance with the manufacturer's factory design standards. Original origin translates to proper fitment at mounting points, compatibility with standard ball joints, and predictable behavior throughout the suspension's operating range. The item is offered as a used part, allowing for economical repair while maintaining characteristics close to factory specifications.

How to Ensure Suspension Durability – Knowledge for the Discerning

When replacing control arms and ball joints, it is worth paying attention to the condition of other suspension components and to the correct tightening of connections with the vehicle under load. For drivers who want to better understand suspension operation and servicing principles, the guide: Suspension System – A Comprehensive Guide to Shock Absorbers, Control Arms, and Stabilizers, which discusses practical aspects of operation and diagnostics, will be helpful.

If you are planning a comprehensive rear suspension overhaul for your BMW and are interested in other components responsible for wheel guidance, such as additional arms, links, or parts cooperating with ball joints, check the available parts in the BMW Control Arms and Ball Joints category.