Powerflex PFR5-4626 Rear Diff Mount Bush Polyurethane for BMW X3 E83 2003–2010 | Polybush Differential Rear Final Drive Mount/Hanger Support Bushing | Rear Axle Drivetrain Upgrade | Handling & Traction Improvement

Rear Final Drive Rear Mount Bush Upgrade | Polyurethane Bushing | Part No. PFR5-4626 | Fits BMW X3 E83 2003–2010

Give your first generation BMW X3 E83 a tighter, more composed rear end with this uprated polyurethane rear final drive rear mount bushing. Part number PFR5-4626 replaces the tired rubber mount at the back of the differential, minimising unwanted movement, sharpening throttle response and enhancing stability under acceleration and braking. A smart choice for fast-road driving and as a durable replacement, this upgrade helps restore precision and confidence on X3 models built from 2003 to 2010.

Engineered from high-performance polyurethane, this rear drivetrain mount controls flex far better than ageing OEM rubber, keeping the rear axle aligned and your tyres in consistent contact with the tarmac. Expect cleaner power delivery, reduced wheel hop, less drivetrain shunt and improved traction without a harsh ride. It is a strong, long-lasting solution for daily use and spirited driving.

Why enthusiasts choose this rear differential mount

• Part number: PFR5-4626
• Fitment: BMW X3 E83, model years 2003 to 2010
• Location: rear final drive rear mounting position on the back axle
• Diagram reference: 26
• Pack contains: 1 bushing assembly
• Controls differential movement for more consistent power delivery
• Sharper handling and improved rear-end composure
• Helps reduce axle tramp, wheel hop and drivetrain knock
• Resistant to oil, road grime and heat for long service life
• Powerflex Lifetime Warranty for peace of mind

Fitment clarity

Designed specifically for the BMW X3 E83 chassis. If you are refreshing rear suspension components or tackling a clunk from the rear diff area, this is the direct polyurethane replacement for the rear mount position.

Real-world results

We run these bushes on our own builds and customer cars. Feedback is consistently positive, with owners noting crisper responses, better traction out of junctions and a more planted rear end without unacceptable NVH.

Installation and support

Professional fitting recommended. MJ Modifications in Warwickshire offer installation and setup. Request a quote: info@mjmodifications.co.uk. A four-wheel alignment is advised after fitment to maximise tyre life and handling performance.

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Upgrade your BMW X3 E83 with part number PFR5-4626 and enjoy a tougher, more precise rear drivetrain mount that enhances stability, traction and overall driving enjoyment.