Genuine BMW F25/F26 RP Output Shaft - X3 F25 (2009-2017) & X4 F26 (2013-2018) xDrive - Left/Right - OEM Replacement 31608675013 / 31608675014

BMW X3 F25 and X4 F26 xDrive Differential Side Shaft, OE Left or Right Replacement

Restore crisp power delivery and factory-tight driveline feel with this BMW original equipment side shaft for F25 X3 and F26 X4 models with xDrive. Built to BMW’s own specification, this output side shaft is the correct OE component for a hassle-free swap, giving you the fit, finish and longevity you expect from a dealer-supplied part.

Choose the exact side you need. Nearside and offside variants are available individually and match the specific spline count, length and sealing surfaces for the intended position. Ideal when removing play, grinding or vibration after wear or mileage, or when refreshing the front axle during diff or bearing service.

Why buy from MJ Modifications

• BMW OE part for the right geometry and alignment on xDrive cars
• Direct bolt-on replacement, no fabrication required
• Sold per side, select left nearside or right offside to suit
• Backed by BMW manufacturer warranty
• Tried and tested by our team, fitted on customer vehicles with excellent feedback

Part numbers

• 31608675013, left side
• 31608675014, right side

Vehicle coverage

Compatible with BMW X3 F25, production 2009 to 2017, including:

• 20d xDrive
• 20i xDrive
• 28d xDrive
• 28i and 28i xDrive
• 30d xDrive
• 35d xDrive
• 35i xDrive

Compatible with BMW X4 F26, production 2013 to 2018, including:

• 20d xDrive
• 20i xDrive
• 28i xDrive
• 30d xDrive
• 35d xDrive
• 35i xDrive
• M40i xDrive

Fitment check before dispatch

We verify compatibility prior to shipping. Add your UK registration or last 7 of VIN at checkout and we will confirm the correct side and reference number for your car.

Warranty

Two years manufacturer warranty for UK customers and one year for international customers when a VIN is supplied at checkout on eligible vehicles.

Professional installation

Prefer it fitted by specialists We offer in-house fitting at MJ Modifications, Warwickshire. Request a quote at info@mjmodifications.co.uk. We have installed these shafts many times with outstanding results and happy customers.

What this solves

• Wear in the differential side shaft splines and joints
• Unwanted play leading to drivetrain shunt or noise under load
• Restores smooth engagement and confident xDrive performance

Also known as

BMW front differential side shaft, half shaft, output stub axle, axle shaft, diff output shaft, front axle side shaft, transmission side shaft, OE BMW shaft, nearside axle, offside axle, left side shaft, right side shaft, F25 axle shaft, F26 axle shaft, X3 axle stub, X4 axle stub, xDrive diff shaft, BMW OE driveline shaft, BMW RP side shaft, 31608675013, 31608675014.

Order with confidence from MJ Modifications. Genuine BMW quality, verified fitment, fast dispatch and expert support if you need it.