Powerflex Black Series Rear Differential Rear Bush for BMW E46 and BMW Z4 E85 E86
Upgrade the rear differential mount on your BMW with the Powerflex Black Series Rear Diff Rear Bush. This high-performance polyurethane diff bush is engineered for track, race and rally use, delivering maximum control of rear axle and drivetrain movement on BMW E46 and BMW Z4 E85 E86 platforms. If you are searching for BMW E46 rear diff bush, BMW E46 rear differential bush, BMW Z4 rear diff mount, E46 diff bushing upgrade or polyurethane diff bush, this is the proven solution.
Manufactured in a 95 Shore Black Series compound, this rear diff rear bush significantly reduces differential movement under load compared with tired OEM rubber bushes. Expect a tighter rear end, improved traction, more consistent handling, cleaner power delivery and long-term durability. Ideal for fast road, track day and full motorsport builds where precision matters.
Part Number: PFR5-4626BLK
Key Benefits
- Polyurethane 95A Black Series compound designed for track, race and rally.
- Controls rear differential movement for sharper response and stability.
- Reduces wheel hop and improves traction on acceleration and corner exit.
- Durable, oil and abrasion resistant upgrade over OEM rubber diff bush.
- Direct replacement rear diff rear bush for BMW E46 and BMW Z4 E85 E86.
- Perfect search match for BMW E46 diff mount, E46 rear diff bush, Z4 E85 E86 diff bushing and Powerflex Black Series bush.
Vehicle Compatibility
Fits the following BMW applications:
- BMW E46 Compact
- BMW E46 Saloon, Touring, Coupe, Convertible
- BMW E46 Xi and XD 4WD models
- BMW Z4 E85 and E86 2003 to 2009
Common searches this fits: BMW E46 rear differential bush, E46 diff mount bush, BMW Z4 E85 rear diff bush, Z4 E86 differential bushing, Powerflex Black Series BMW diff bush.
Replaces OEM Part Numbers
- 33173449082
- 33176751808
What’s Included
- 1 x rear differential rear bush
- Quantity required per car: 1
Diagram reference: 26
Why Choose This Powerflex Black Series Diff Bush
We and many of our customers run Powerflex Black Series bushes on BMW track builds with excellent results. If you want a precise, motorsport-grade rear differential mount bush for your BMW E46 or Z4 E85 E86, this Powerflex upgrade is the go-to choice for serious drivers seeking performance, control and reliability.
Compatibility Check
We will verify fitment before dispatch. Provide your UK registration or the last 7 digits of your VIN at checkout and we will confirm this rear differential rear bush suits your exact BMW model.
Professional Fitting
For installation of your BMW E46 or BMW Z4 E85 E86 rear diff bush, we recommend professional fitting at Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Installation Guide
Download the official Powerflex fitting instructions here: PFR5-4626BLK Install Guide
Summary
Powerflex BMW E85 E86 E46 Black Series Rear Diff Rear Bush. Part Number PFR5-4626BLK. The ultimate polyurethane rear differential bush upgrade for BMW E46 and BMW Z4 E85 E86 drivers who want better handling, stronger diff location and long-lasting performance. Ideal search terms include BMW E46 rear diff bush, BMW Z4 diff mount, E46 differential bushing, Powerflex Black Series bush and polyurethane rear diff bush.