Front Lower Suspension Ball Joint Compatible with BMW X3 F25 and X4 F26

1. Vehicle Compatibility and OE Identification

The KU-FV-06-006 is an independent aftermarket front lower suspension ball joint compatible with selected BMW X3 F25 and X4 F26 vehicles. It cross-references OE number 31106787665 and can be installed on either the left or right side of the front axle.

As vehicle specifications may vary according to production date, engine and regional configuration, buyers should verify the OE number and VIN before ordering.

2. Suspension and Steering Function

• Control Arm Connection: Connects the front lower control arm or tension strut to the steering knuckle.

• Articulated Movement: Allows controlled suspension and steering movement as the wheel travels over uneven road surfaces.

• Load Transfer: Carries forces generated during steering, braking and normal suspension movement.

• Replaceable Configuration: Allows the worn joint to be replaced separately where the vehicle’s suspension design permits.

3. Sealed Joint Construction

• Forged Steel Ball Stud: Provides the mechanical strength required for routine front-suspension loads.

• Rubber Dust Boot: Helps prevent road dust, water and debris from entering the joint housing.

• Pre-Applied Lubrication: Supports smooth internal movement from initial installation.

• Sealed Housing: Helps retain lubricant and protect the internal contact surfaces during regular road operation.

4. Inspection and Installation Guidance

• Wear Symptoms: A worn ball joint may contribute to suspension noise, steering play, uneven tire wear or reduced directional stability.

• System Inspection: Control arms, bushings, tie-rod ends, wheel bearings and the opposite-side ball joint should be inspected before replacement.

• Professional Installation: Installation should be completed using the vehicle manufacturer’s specified tightening sequence and torque values.

• Alignment Check: Wheel alignment should be inspected after suspension work and adjusted when required.