Powerflex Poly Engine/Motor Mount Bush Insert Kit PFF5-4020 for BMW 2 Series G42 (2022+) M240i B58 N54 N55 – Torque/Transmission Mount Void Filler Upgrade

Get tighter drivetrain control and a sharper, more connected BMW 2 Series G42 drive with polyurethane motor mount bush inserts, part number PFF5-4020. This precision void-filler slides into the factory rubber mount to control engine rock, enhance shift feel and deliver cleaner torque transfer, ideal for fast road and tuned cars from 2022 onwards.

Why enthusiasts choose this upgrade

• Quicker throttle pickup and more immediate response under load
• Smoother, more precise gear changes by limiting powertrain movement
• Improved traction and stability during on and off throttle transitions
• More efficient delivery of power to the tyres for a tighter, more planted feel
• Helps protect and extend the life of the original rubber mount

Key features

• Yellow 70A polyurethane compound for a balanced fast road setup
• Direct-fit void insert, no press required and mounts can stay in place during install
• Minimal change in cabin refinement, a light increase in NVH is normal at idle
• Supplied as a single insert to suit the original mount design
• Diagram reference: 21
• Replaces OE numbers: 22116787659, 22116855460, 22116760330, 22116773744
• Part number: PFF5-4020

Compatibility

• For vehicles with N54, N55 and B58 engines
• BMW 2 Series G42 Coupe 2022 plus, including B58 powered variants such as M240i

Real world results

We have fitted this upgrade for customers and on our own demonstrator with excellent feedback. Drivers report crisper shifts, reduced drivetrain shunt and a more immediate feel on throttle without harshness. It is a smart middle ground between cheap alloy spacers and full solid mounts for daily driven performance cars.

Fitting service

Professional installation available at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote.

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