Powerflex PFR5-1927 BMW F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 Rear Differential Front Bush Insert - Polyurethane Diff Mount (Fits 1/2/3/4 Series incl. M135i M140i M235i M240i 330d 335d 340i 430d 435d 440i xDrive) OEM 33316792513

Powerflex PFR5-1927 Rear Final Drive Front Mount Insert for BMW F-Series

Transform how your F-series BMW puts power to the tarmac with the Powerflex PFR5-1927 front-position mount insert for the rear final drive. This high-grade polyurethane insert supports the factory mounting that corresponds to OE reference 33316792513, tightening up driveline control for sharper launches, cleaner gear changes and confidence-inspiring rear-end stability on fast road and light track. We use these inserts on our own builds and customer cars alike, and the feedback is consistently excellent for traction, precision and day-to-day drivability.

If you are chasing a cure for diff shunt, axle tramp, wheel hop or that tell-tale thud on on-off throttle, this is the go-to upgrade. The insert locates within the original rubber mount to control torque reaction without the harshness of a solid bush. Ideal for tuned M135i, M140i, M235i, M240i, 330d, 335d, 340i, 430d, 435d, 440i and xDrive models as well as non-M variants.

Key advantages

• Controls movement of the rear final drive under load for straighter, more stable acceleration
• Improves traction and reduces wheel hop and axle tramp
• Crisper throttle pick-up and more consistent upshifts
• Insert design retains the OE mount for comfort and durability
• Polyurethane construction resists oil, heat and age-related softening
• Direct-fit solution with no need to press out the original mount

Part numbers

• Powerflex reference: PFR5-1927
• Fits OE mount: 33316792513

What is included

• 2 x front-position inserts for the rear final drive mount
• Two inserts required per vehicle

Vehicle coverage

Designed for BMW F-series chassis including F20 F21 F22 F23 F30 F31 F32 F33 F34 GT F36. Suitable for a wide range of engines and trims, including but not limited to:

• 1 Series F20 F21 and LCI - 114d 114i 116d 116i 118d 118i 120d 120i 125d 125i M135i M140i including xDrive
• 2 Series F22 F23 and LCI - 218d 218i 220d 220i 225d 228i 230i M235i M240i including xDrive
• 3 Series F30 F31 and LCI - 316d 316i 318d 318i 320d 320i 325d 328i 330d 330e 330i 335d 335i 340i including xDrive, plus F34 GT equivalents
• 4 Series F32 F33 F36 and LCI - 418d 418i 420d 420i 425d 428i 430d 430i 435d 435i 440i including xDrive

Why this insert works

The OE rubber mount features voids that allow excessive movement of the differential casing during hard acceleration and sudden lift-off. The PFR5-1927 insert neatly fills those voids, increasing the mount’s stiffness in the direction that matters while retaining the primary rubber for isolation. The result is a more connected rear axle with minimal impact on refinement.

Fitting service

Professional installation recommended. MJ Modifications in Warwickshire can supply and fit this upgrade. Request a fitting quote via info@mjmodifications.co.uk.

Check compatibility before ordering

For peace of mind on fitment, provide your UK registration or the last 7 digits of your VIN at checkout and we will verify compatibility prior to dispatch.

Installation guide

Download the PFR5-1927 fitting instructions

Manufacturer

Powerflex

Search-friendly terms

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