PFR5-325H - PowerFlex Rear Diff Front Mount Bushing - E36 - M4, M44, M50, M52, S50
PowerFlex Rear Diff Front Mount Bushing - E36 - M4, M44, M50, M52, S50
The Powerflex Heritage Series is a premium motorsport upgrade engineered to eliminate critical differential deflection. Molded from an advanced, proprietary polyurethane formula, this bushing stabilizes the differential nose under high-torque loading.
In high-performance and competitive driving environments, the E36 chassis is notoriously prone to deflection at the rear subframe and differential mounting points. Under hard acceleration, deceleration, and high-torque corner exits, the factory rubber front differential mount allows significant rotational movement. This deflection distorts suspension geometry, delays power delivery to the rear wheels, and subjects the differential bolt to extreme shear stress—often leading to catastrophic bolt failure.
The Powerflex Heritage Collection Rear Diff Front Mount Bushing is engineered to mitigate this critical failure point. It provides a substantial upgrade in torsional rigidity while respecting the aesthetic and functional balance required for period-correct restorations, vintage racing series, or high-performance builds where a subtle appearance is preferred.
Technical Benefits
Optimized Power Transfer: By restricting the rotational axis of the differential nose, this bushing ensures near-instantaneous throttle response and power delivery to the drive wheels.
Drivetrain Protection: Minimizes the violent "wheel hop" and drivetrain deflection that fatigues axles, driveshafts, and the notorious front differential mounting bolt.
Material Science: Molded from proprietary polyurethane compounds that offer superior tensile strength and resistance to oil, fuel, and ozone degradation, far outlasting factory rubber.
Chassis Integrity: Engineered to absorb high-frequency harmonics, striking the ideal compromise between solid spherical mounts and compliant rubber to prevent premature stress cracking of the E36 subframe.
Prop 65 Warning
Cross Reference
33171134871
PFR5-325
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
E36
318i
M42 1.8L
Use vehicle selector to confirm fitment
BMW
E36
318i
M44 1.9L
Use vehicle selector to confirm fitment
BMW
E36
318is
M42 1.8L
Use vehicle selector to confirm fitment
BMW
E36
318is
M44 1.9L
Use vehicle selector to confirm fitment
BMW
E36
325i
M50 2.5L
Use vehicle selector to confirm fitment
BMW
E36
328i
M52 2.8L
Use vehicle selector to confirm fitment
BMW
E36
M3
S50 3.0L
Use vehicle selector to confirm fitment
BMW
E36
M3
S52 3.2L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
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