Powerflex PFF5-4020 Engine/Motor Mount Insert Bush Kit for BMW X4 F26 2013–2018 – Yellow Polyurethane 70A – Pair/Set of 2 – Poly Motor Mount Bushings/Support Inserts – Replaces OE 22112284817, 22112284818

Powerflex PFF5-4020 Motor Mount Insert Pair for BMW X4 F26 2013–2018

Give your BMW F26 X4 a tighter, more planted drivetrain feel with this pair of Powerflex polyurethane motor mount inserts. Part number PFF5-4020 uses Yellow 70A compound to occupy the cavities in the factory mounts, curbing engine rock under load for cleaner power transfer and a more connected drive on the road.

What you will feel

• Crisper pedal response off the line and between gears
• Reduced drivetrain lash for smoother upshifts and downshifts
• More stable acceleration and deceleration with less engine movement
• Improved consistency during spirited driving and remapped setups
• Helps protect OE mounts by limiting excessive movement
• Fast install with the mounts still on the vehicle

Why this upgrade works

The OE rubber mounts are designed with voids that allow the engine to oscillate. PFF5-4020 fills those gaps with durable polyurethane, increasing control without resorting to harsh, solid replacements. The result is performance you can feel with only a small increase in NVH at idle.

Key specifications

• Vehicle: BMW X4 F26 2013–2018
• Part number: PFF5-4020
• Material: Powerflex Yellow polyurethane, 70A durometer
• Contents: 2 inserts
• Diagram reference: 21
• Direct replacement for OE references: 22112284817 and 22112284818
• Colour: Yellow

Install and NVH guidance

Designed to be fitted with the factory mounts in place. Expect a modest increase in vibration at idle compared with stock. Stiffer materials transmit more NVH, which is normal for performance-focused bushings.

Track and competition option

For drivers prioritising maximum rigidity for circuit use, there is a stiffer 95A compound range available from Powerflex that further limits engine movement for ultimate precision.

Fitted by enthusiasts, loved by customers

We run these inserts on our own builds and have installed them for numerous X4 owners. Feedback is consistently positive, noting sharper response, more confidence under load and a more solid, precise feel from the drivetrain.

Professional fitting

Want it installed for you? Book expert fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Search terms to help you find the right part

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