BMW X5 X6 F15 F16 Front Right & Left Upper Control Arm Genuine 31126863786 31126863785

The F15 X5 and F16 X6 use a sophisticated multi-link front suspension with both upper and lower control arms performing distinct functions: Upper control arms (this set): Control upper wheel movement, primarily manage camber angle and steering precision. Located higher in the suspension, subject to lighter loads but critical for precise steering geometry. Typically wear at 80,000-120,000 mile intervals. Lower control arms: Bear significantly more vehicle weight and absorb larger road impacts. Subject to heavier loads and stress, typically wear slightly faster than upper arms. Should you replace all four? This depends on inspection findings: Replace all four if: Vehicle has 100,000+ miles with no recent suspension work, multiple arms show bushing wear or play during professional inspection, comprehensive suspension restoration is planned, vehicle has history of rough road use or off-road driving. Replace uppers only if: Lower arms recently replaced or confirmed in excellent condition during inspection, symptoms specifically indicate upper arm issues. Cost efficiency consideration: Replacing all four arms in one service session requires only ONE alignment and ONE combined labor charge—the most economical scenario on high-mileage vehicles. Request comprehensive suspension inspection report from your BMW technician to make informed decision before committing to partial or complete replacement.

This set is designed specifically for the BMW X5 (Chassis F15) and BMW X6 (Chassis F16) produced roughly between 2014 and 2018. This includes most sub-models (sDrive35i, xDrive35i, xDrive50i, xDrive35d, and X5 M/X6 M). However, fitment can vary based on specific suspension packages (e.g., Adaptive M Suspension). We highly recommend verifying fitment using your Vehicle Identification Number (VIN) before purchasing

Yes, this is a set. It includes:

1x Front Left Upper Control Arm (Part # 31126863786)

1x Front Right Upper Control Arm (Part # 31126863785)

(Note: If you only need one side, please contact us or search for the individual part number.)

Yes, we ship to most countries worldwide.

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