Powerflex Rear Differential Front Mount Polyurethane Bush PFR5-4621 for BMW E46 M3 & Z4M (OEM 33172282484)
Powerflex Rear Differential Front Mount Polyurethane Bush PFR5-4621 for BMW E46 M3 & Z4M (OEM 33172282484)
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Powerflex Rear Differential Front Mount Polyurethane Bush PFR5-4621 for BMW E46 M3 & Z4M (OEM 33172282484)

£38.94
£38.94
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Powerflex Poly Bushes Pack - Rear Differential Front Mount - PFR5-4621 - BMW E46 M3 and Z4M

Part Number: PFR5-4621

OEM Cross-Reference: 33172282484

Diagram Reference: 21

Number of bushes in the pack: 1

Upgrade your BMW with the Powerflex rear diff front mount poly bush. This high-performance polyurethane differential bush is designed to replace the soft, ageing factory rubber bush and transform rear-end stability, traction, and handling precision. Ideal for fast road and track use, this is the go-to E46 M3 diff bush and Z4M diff bush for enthusiasts who want sharper response and long-term reliability.

Key benefits

  • Reduces differential movement for a tighter, more connected rear end
  • Improves traction, acceleration stability, and cornering precision
  • Minimises wheel hop and unwanted drivetrain twist under load
  • Helps maintain correct geometry for more consistent tyre contact
  • Prolongs tyre life and improves braking stability
  • Durable polyurethane construction that resists oil, heat, and wear
  • Lifetime Warranty from Powerflex for peace of mind

Why choose Powerflex poly bushes

Powerflex polyurethane bushes control unwanted flex in the suspension and driveline, letting your suspension do its job properly. Compared to ageing rubber, these bushes maintain performance under load and over time. Correctly formulated polyurethane is as good if not better at noise, vibration, and harshness suppression when compared to rubber, while delivering a significant improvement in precision and consistency.

Fitment

  • BMW E46 M3 rear differential front mount bush
  • BMW Z4M rear differential front mount bush
  • Fits E46 M3 and Z4M models only

What you get

  • 1 x Powerflex rear diff front mount bush insert kit for the front of the rear differential
  • All required components as supplied by Powerflex for this position

Trusted by us and our customers

We use Powerflex bushes on our own cars and customer builds. Feedback is consistently positive, with noticeably better rear-end stability, improved traction out of corners, and a more confidence-inspiring drive on both road and track.

Common symptoms this upgrade cures

  • Imprecise handling and rear-end float
  • Uneven tyre wear caused by excessive driveline movement
  • Braking instability and poor traction under load

Fitting service

Professional fitting available at Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.

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