Powerflex PFF5-1322 Transmission/Gearbox Mount Insert Bush for BMW 1 Series F40 (2018-On) incl M135i xDrive | Road Series 70A Polyurethane Poly Bush | Drivetrain/Torque Support Upgrade | Replaces OE 22316853453

BMW 1 Series F40 Drivetrain Support Insert by Powerflex — PFF5-1322

Sharpen up gear changes, calm unwanted movement and add confidence under acceleration with this polyurethane mount insert. Powerflex PFF5-1322 is a direct-fit insert for the factory rubber support on the BMW 1 Series F40, giving a more connected, precise feel without turning your daily into a track-only car.

Why enthusiasts choose this upgrade

• Reduces drivetrain slop for cleaner, quicker shifts and improved throttle response.
• Cuts wheel hop and torque-induced movement to help traction and stability.
• Great balance of comfort and control thanks to its 70 Shore A poly formulation.
• Ideal for fast-road, remapped and spirited driving where the OE mount can feel soft.
• Insert design works with the existing rubber mount. No pressing out the original bush.

Key product info

• Part number: PFF5-1322
• Compatibility: BMW 1 Series F40, 2018 onwards
• Location: gearbox support mount insert
• Material: yellow polyurethane, 70 Shore A
• Pack contents: 1 insert
• Diagram ref: 22
• OE cross reference: 22316853453

What you will feel

• More precise gear engagement under load and during quick shifts.
• Reduced engine and transmission rocking on launches and hard corner exits.
• Calmer driveline behaviour with only a small increase in NVH compared with worn rubber.

Tested by us. Loved by customers.

We have fitted PFF5-1322 to multiple BMW F40 builds at MJ Modifications and customer feedback has been consistently positive. The common response is tighter shift feel, greater stability on boost and a more planted front end during aggressive driving.

Installation and support

Professional fitting is recommended. For supply and installation by MJ Modifications in Warwickshire, request a quote at info@mjmodifications.co.uk.

Note: This is an insert that sits within the standard rubber mount. A slight increase in cabin vibration at idle may be noticeable on some cars, which is normal for performance polyurethane components.

Who is this for

• Drivers wanting crisper gearshift feel and better driveline control on road.
• Owners of mapped or fast-road F40 cars wanting to tame wheel hop.
• Anyone seeking a durable poly bush solution that outlasts soft factory rubber.

Popular search phrases

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In the box

• Powerflex PFF5-1322 polyurethane insert
• Fitting guidance

Add this smart upgrade to your BMW F40 and enjoy a more direct, confidence-inspiring drive. In stock for fast dispatch from MJ Modifications.