Powerflex PFR5-4626 Poly Bush Rear Differential Mount/Bushing for BMW E46 3 Series (1998-2006), incl Touring/Estate – Uprated Performance Diff Mount, OE Replacement, Fast Road/Track

Uprated Polyurethane Differential Mount for BMW E46 – Part No. PFR5-4626

Transform the rear end feel of your BMW E46 with this premium polyurethane differential mounting bush from Powerflex. Engineered to reduce unwanted driveline movement and keep the rear axle planted, it delivers sharper response, better traction and more predictable handling on fast road and track-inspired builds while remaining perfectly civil for daily use.

Compatible chassis: BMW 3 Series E46, including Touring estate models.

Pack contents: 1 rear differential mount
Diagram reference: 26
Manufacturer part number: PFR5-4626

Why this upgrade

• Reduces compliance in the driveline for crisper throttle response and cleaner gear changes
• Helps control wheel hop and improves traction out of corners
• Keeps alignment more consistent under load for steadier braking and turn in
• Resists oil, road salt and heat for long term durability
• Optimised NVH characteristics to keep cabin refinement in check
• Backed by a lifetime warranty from the manufacturer

Common symptoms this solves

Rear end clunks, vague stability under acceleration, uneven tyre wear and a squirmy feel from the back of the car are typical signs of a tired factory rubber mount. This polyurethane replacement is a proven cure that restores confidence and consistency.

Trusted by enthusiasts

We run these bushes on customer E46 builds and the feedback is consistently positive. Tighter rear end control, better grip on B roads and a noticeable improvement in precision without unacceptable harshness.

Fitment and installation

This is a direct replacement for the original rear differential mounting bush. Professional installation is recommended. For fitting, book with MJ Modifications in Warwickshire and request a quote at info@mjmodifications.co.uk.

Ideal uses

• Fast road upgrade
• Track day preparation
• OE replacement for worn rubber bushes

Search friendly terms

BMW E46 rear differential bushing, E46 diff mount upgrade, BMW 3 Series rear axle bush, polyurethane diff mount, performance rear diff bush, E46 Touring estate differential mount, uprated driveline bushing, rear end stability upgrade, Powerflex PFR5-4626, fast road bush kit, OE replacement bush for E46, handling upgrade for BMW 3 Series.

Order today to tighten up your E46’s rear end and enjoy a more connected, confidence inspiring drive. Part No. PFR5-4626 ships with the manufacturer’s lifetime warranty for total peace of mind.