Powerflex PFF5-4020 Engine Mount Insert Bush Kit for BMW 5 Series G30/G31 (2016-On) Road Series Yellow 70A Polyurethane, 2 Inserts

Powerflex PFF5-4020 Motor Mount Insert Pair for BMW 5-Series G30 G31 2016+

Tighten up your BMW G30 or G31 with this simple, high-value upgrade. The Powerflex PFF5-4020 Road Series motor mount insert pair fills the voids in the factory hydraulic mounts to control engine movement under load. Expect cleaner shifts, sharper throttle pick up and a more connected drivetrain feel on daily drives and fast road use. We run these on our own cars and customer 5-Series builds with consistently brilliant results.

• Part number: PFF5-4020
• Platform: BMW 5-Series G30 and G31 2016 on
• Spec: Road Series, Yellow 70A polyurethane
• Kit contents: 2 inserts
• Diagram ref: 21
• OE cross references: 22112284817, 22112284818

What it does

• Controls engine rock for crisper gear changes and reduced driveline shunt
• Improves throttle response and power delivery by limiting mount flex
• Helps reduce wheel hop and improves traction on hard launches
• Supports and prolongs the life of the original mounts
• Great balance of performance with minimal increase in NVH for road use

Why this upgrade

The Yellow 70A polyurethane insert is the sweet spot for a road focused 5-Series. It is a smart intermediate step between stock rubber and much stiffer solid solutions, delivering a noticeable improvement without making the cabin harsh. Installation is quick because the factory mounts stay in place and the inserts slide in to support the voiding.

Real world feedback

Fitted by us on multiple G30 and G31 cars, customers report a more planted front end, tidier shift feel and a tighter driveline with very little extra vibration at idle once warmed up.

What is included

• 2 x Powerflex mounting inserts in Yellow 70A polyurethane
• Road Series specification for everyday and spirited driving

Fitment and installation

Suitable for BMW 5-Series G30 and G31 models from 2016 on that use the OE mount numbers listed above. Straightforward to install with the mounts in situ for an experienced DIYer.

Prefer professional fitting? Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

NVH guidance

A modest rise in vibration at idle is normal when supporting the factory mounts. Once moving, the improvement in control outweighs the small increase in cabin feedback for most road users.

Helpful search terms

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