Genuine BMW Front Wheel Bearing Hub Assembly Kit (Wheel Hub Unit) F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 1 2 3 4 Series - Fits M135i M240i 340i M2 - OEM 31206876840 - Front Axle Wheel Hub/Bearing Replacement M12 x 1.25

BMW F-Series Front Axle Hub Unit with Integrated Bearing

Silence drone, tighten up front-end feel and bring back that crisp factory steering response with this BMW original front hub unit and bearing assembly. This direct-fit OE part is the correct replacement for a huge range of F-Series chassis including F20, F21, F22, F23, F30, F31, F32, F33, F34 and F36, covering 1 Series, 2 Series, 3 Series and 4 Series models, plus performance favourites where applicable such as M135i, M240i, 340i and M2.

Part number: 31206876840
Thread specification: M12 x 1.25

Why this OE hub unit is the smart choice

• BMW factory component for precise geometry, perfect alignment and proper ABS compatibility
• Pre-assembled sealed bearing for long service life and consistent performance
• Direct swap for the tired front hub assembly to cure droning, grinding and play
• Restores confident turn-in, straight-line stability and smoothness at speed
• Ideal for daily use, fast road driving and occasional track work on F-Series cars

What owners and our workshop say

We run this exact hub unit on our own F-Series builds and it is a proven fix. Customers report quieter running, reduced vibration through the wheel and noticeably sharper steering after installation. If you want the performance and reliability of a BMW original part, this is the one to fit.

Vehicle coverage

Front position fitment for the following BMW platforms where specified:

• 1 Series: F20, F21
• 2 Series: F22, F23
• 3 Series: F30, F31, F34 Gran Turismo
• 4 Series: F32, F33, F36 Gran Coupe
• Performance models where applicable: M135i, M240i, 340i, M2

Specs and identifiers

• Manufacturer: BMW
• BMW reference: 31206876840
• Thread: M12 x 1.25
• Location: Front axle
• Type: Hub unit with integrated bearing

Fitting service

Prefer professional installation by BMW specialists We can help. Book fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Compatibility check before dispatch

Send us your UK registration or the last 7 of your VIN at checkout and we will verify suitability against BMW factory data for peace of mind.

Warranty

Two years manufacturer warranty for UK customers and one year manufacturer warranty for international customers when a valid VIN is provided at checkout on compatible vehicles.

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