Powerflex PFF5-4631 Gearbox Selector Rod Front Mount Bush 26mm Oval for BMW 1 Series F20 F21 – Shifter/Shift Linkage Bushing Poly Insert – Manual Transmission – Replaces OE 25117507695

Powerflex PFF5-4631 Selector Rod Front Mount Bush – BMW 1 Series F20 F21 – 26 mm Oval – Replaces OE 25117507695

Give your manual transmission the crisp, positive engagement it deserves. This Powerflex polyurethane insert replaces the factory selector rod front mount on BMW 1 Series F20 and F21 models, tightening the gear change and removing unwanted slack for a cleaner, more mechanical shift action. If your change feels loose or imprecise, this is the simple, high‑impact refresh you will feel on every drive.

We run this part on our own cars and our customers love the improvement in precision, consistency and confidence when rowing through the gears. It is a direct swap for the original rubber item and is built to resist wear, heat and fluids far better than the OE component.

Key details

• Part number: PFF5-4631
• Application: BMW 1 Series F20, F21 (manual gearbox selector linkage)
• Profile: Oval front mount bush
• Length: 26 mm
• Diagram reference: 31
• Pack contents: 1 bush
• Direct replacement for BMW OE: 25117507695

Why enthusiasts choose this upgrade

• Cleaner, more precise gear engagement under load and at speed
• Cuts play in the selector mechanism for a firmer, more connected feel
• Durable polyurethane construction for long‑term performance
• Ideal when overhauling a tired linkage or as a performance enhancement

Fitment guidance

• Check your existing component is the oval front mount and measures 26 mm in length.
• Some vehicles may use more than one bush in this area. Order the quantity your setup requires.
• Direct replacement installation with standard workshop tools.

Professional installation

Want it fitted properly first time? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote.

Tried and trusted

We have installed this bush in‑house and feedback has been consistently positive, highlighting sharper shift feel, reduced slop and improved driver confidence.

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