Bilstein B1 12-296231 Front Shock/Strut Top Mount & Bearing Plate for BMW 3 Series E90 E91 E92 xDrive AWD, Z4 E89 & ALPINA B3 - OE Front Axle Support Bearing/Upper Mount

Bilstein B1 Upper Strut Mounting - Part No. 12-296231

Refresh the front end of your BMW or ALPINA with this genuine Bilstein B1 upper strut mounting, part number 12-296231. Designed for MacPherson front suspension, this OE-spec bearing plate restores steering accuracy, cures knocks and creaks, and brings back the tight, refined feel you expect from a well-sorted chassis.

Why this Bilstein B1 mount is a smart upgrade

• Direct-fit replacement for factory equipment with precise alignment and correct height
• Engineered for long service life and quiet operation under daily use and spirited driving
• Improves steering response and stability by removing play in the damper top support
• Ideal when fitting new shocks or springs, or when chasing front-end clunks and vibration
• Compatible with OE dampers and Bilstein performance struts

At MJ Modifications we install these regularly and our customers consistently report smoother turn-in, reduced noise and a more confidence-inspiring front axle once worn mounts are replaced. If you want your 3 Series or Z4 to feel tight and composed again, this is the right part.

Vehicle applications

Front axle fitment for the models below. If you are unsure, we can verify compatibility before dispatch.

• ALPINA
  • B3 Touring E91 09.07 to 05.13
    • Bi-Turbo All-wheel Drive, S Bi-Turbo All-wheel Drive
• BMW 3 Series
  • E90 Saloon 02.04 to 02.12
    • 325 xi, 325 i xDrive, 330 xi, 330 i xDrive, 335 xi, 335 i xDrive, 320 d xDrive, 330 xd, 330 d xDrive
  • E91 Touring 12.04 to 12.12
    • 325 xi, 325 i xDrive, 330 xi, 330 i xDrive, 335 xi, 335 i xDrive, 320 d xDrive, 330 xd, 330 d xDrive
  • E92 Coupe 01.05 to 12.13
    • 325 i xDrive, 325 xi, 330 xi, 330 i xDrive, 335 xi, 335 i xDrive, 320 d xDrive, 330 xd, 330 d xDrive
• BMW Z4
  • E89 Roadster 02.09 to 08.16
    • sDrive 18 i, sDrive 20 i, sDrive 23 i, sDrive 28 i, sDrive 30 i, sDrive 35 i, sDrive 35 is

What this part does

• Upper damper support with integrated bearing to allow smooth steering rotation
• Maintains correct geometry and ride height at the strut tower
• Reduces vibration and helps eliminate front-end knocks caused by worn mounts

Part numbers and identifiers

• Bilstein Part Number: 12-296231
• Alternate Code: BILSTEIN-12-296231
• EAN: 4025258852085
• UPC: 651860859804

In the box

1 x Bilstein B1 front upper strut mounting for the vehicles listed above.

Fitment check before shipping

For complete peace of mind, we can confirm suitability before we send your order. Add your UK registration or the last 7 characters of your VIN at checkout and we will validate that 12-296231 is correct for your car.

Professional installation

Prefer expert fitting and alignment setup? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a competitive quote.

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