Powerflex PFR5-4626 Rear Diff Mount/Bush (Polyurethane) for BMW E46 3 Series AWD/4x4/4WD – 325xi 330xi 320xd 330xd – Rear Final Drive Differential Hanger Bushing Upgrade/Replacement Poly Bush

Powerflex Rear Final Drive Rear Mount Bush PFR5-4626 for BMW E46 3 Series AWD

Transform the rear end stability of your E46 all-wheel drive with this high-performance urethane rear final drive rear mounting bush. Powerflex part PFR5-4626 replaces the tired OE rubber mount at the back of the differential, tightening up the driveline and delivering crisper response, better traction and a more planted feel on road or fast-road builds. If you are chasing a cure for rear-end clunk, axle tramp or vague rear stability on your 4x4 E46, this is the go-to upgrade.

Why this upgrade works

• Stabilises the final drive housing to cut driveline shunt and improve throttle-on precision
• Helps maintain rear geometry under load for improved grip and confidence in corners
• Reduces wheel hop for cleaner launches and smoother power delivery
• Engineered polyurethane resists oil, salt and road grime for long-term durability
• Can reduce uneven tyre wear by keeping the rear axle located as intended
• Backed by the Powerflex Lifetime Warranty for peace of mind

Fitment and specifics

• Part number: PFR5-4626
• Application: BMW 3 Series E46 all-wheel drive variants only, Xi and XD models
• Also searched as: 325xi, 330xi, 320xd, 330xd rear diff mount bush
• Diagram reference: 26
• Quantity: 1 bush

Real-world results from our workshop

We have installed PFR5-4626 on customer cars and the feedback is consistently positive. Owners report a noticeably more connected rear axle with better traction and a tighter, more precise feel without unwanted noise or harshness. It is a smart preventative maintenance item and a performance upgrade in one.

Installation and support

Professional fitting recommended. For installation, choose MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Common search terms

BMW E46 AWD rear diff mount bushing, E46 4x4 final drive rear mount, BMW 330xi differential rear bush, 325xi diff mounting bush, 330xd rear axle differential bush, E46 AWD driveline mount upgrade, polyurethane diff mount E46, urethane rear differential mount, rear end clunk fix E46 AWD, wheel hop fix E46 4WD, PFR5 4626 bush, BMW E46 all-wheel drive diff hanger, E46 AWD rear diff mount replacement, performance suspension bushing E46 Xi XD.