Powerflex Black Series Rear Differential Front Mount/Bush Insert 95A Polyurethane for BMW F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 (1 2 3 4 Series, incl. xDrive) PFR5-1927BLK - Replaces 33316792513 - Final Drive Front Bushing Upgrade

Track-spec front-position diff mount insert for BMW F-series - PFR5-1927BLK

Take out unwanted movement at the rear axle and sharpen the way your BMW puts power down. This motorsport-grade 95 Shore A black compound insert supports the forward mount of the rear final drive, giving a tighter, more connected feel under hard acceleration, cornering and braking. Ideal for fast road, track day and competition builds on F-series 1, 2, 3 and 4 models, it is the proven upgrade for drivers who want precision, traction and confidence.

We run these on our own cars and our customers love the transformation: crisper throttle response, reduced driveline shunt and more predictable balance when pushing on. Fit it once and enjoy repeatable performance lap after lap.

Why enthusiasts choose this upgrade

• Firm 95A black polyurethane insert to stabilise the differential under load
• Helps curb wheel hop and diff wind-up for cleaner launches and exits
• Keeps rear geometry consistent for improved grip and stability
• Insert design works with the factory rubber mount for a durable, long-life solution
• Perfect for tuned cars, track tools, drift builds and spirited road use
• Straightforward insert solution for the front position of the rear diff carrier

Part number: PFR5-1927BLK

OE reference replaced: 33316792513

What you receive

2 x insert pieces. Two required per vehicle.

Compatible vehicles

BMW F-series with the listed drivetrains and trims, including xDrive where noted:

• 1 Series F20 F21, incl. M135i, M135i xDrive, M140i, M140i xDrive and 114d, 116d, 116i, 118d, 118i, 120d, 120i, 125d, 125i
• 2 Series F22 F23 Coupé and Convertible, incl. M235i, M235i xDrive, M240i, M240i xDrive and 218d, 218i, 220d, 220d xDrive, 220i, 225d, 228i, 230i, 230i xDrive
• 3 Series F30 Saloon F31 Touring and F34 Gran Turismo, incl. 316d, 316i, 318d, 318i, 320d, 320i, 325d, 328d, 328i, 330d, 330e, 330i, 335d xDrive, 335i, 340i, 340i xDrive, ActiveHybrid 3
• 4 Series F32 Coupé F33 Convertible and F36 Gran Coupé, incl. 418d, 418i, 420d, 420d xDrive, 420i, 420i xDrive, 425d, 428i, 430d, 430d xDrive, 430i, 430i xDrive, 435d xDrive, 435i, 440i, 440i xDrive

Searching for this part

BMW F-series diff mount insert, front diff bush, final drive front bushing, rear axle differential insert, polyurethane 95A bush kit, black compound poly insert, driveline mount upgrade, rear end stability, traction upgrade, performance bushings, uprated differential mount, F20 F21 F22 F23 F30 F31 F32 F33 F34 F36, 1 Series 2 Series 3 Series 4 Series, M135i M140i M235i M240i 335i 340i 435i 440i xDrive, PFR5-1927BLK, replaces 33316792513.

Installation and support

Download the official fitting guide.

Want it installed by specialists? MJ Modifications in Warwickshire can fit this upgrade. Request a quote at info@mjmodifications.co.uk.

Fitment check

We will verify compatibility before dispatch. Add your UK registration or the last 7 characters of your VIN at checkout and our team will confirm the correct application.

Brand

Powerflex