Bilstein B1 Front Top Strut Mount Support Bearing 12-303144 - Fits BMW X1 F48, X2 F39, 2 Series F45 F46 (Active/Gran Tourer) - OE Quality Front Axle Mount

Bilstein B1 12-303144 Upper Damper Support for BMW F39 F45 F46 F48

Restore crisp handling and quiet refinement on your BMW with the Bilstein B1 upper mounting kit, part number 12-303144. This genuine Bilstein service component replaces the front upper support and bearing plate on BMW X1 F48, X2 F39 and 2 Series Active Tourer or Gran Tourer F45 F46. Expect tighter steering feel, reduced noises over bumps and OE-level durability on British roads.

Why this Bilstein unit belongs on your BMW

• OEM-grade construction from Bilstein for factory fit and longevity
• Engineered to work perfectly with standard BMW dampers and Bilstein shock upgrades
• Helps maintain correct suspension geometry and precise turn-in
• Direct replacement on the front position for fast, hassle-free install
• Ideal when refreshing shocks and springs or eliminating knocks and creaks

Vehicle applications

• Front axle position
• BMW X1 F48
• BMW X2 F39
• BMW 2 Series F45 Active Tourer
• BMW 2 Series F46 Gran Tourer

What owners notice after fitting

We have installed these on customer X1, X2 and 2 Series models and feedback has been consistently positive. Steering tightens up, unwanted vibration is reduced and the car regains the clean, precise road feel you expect from BMW. It is a smart, cost-effective refresh when tackling suspension work.

Perfect partner for Bilstein shocks

Bilstein B1 mounts are designed to complement Bilstein dampers for consistent performance and service life. Matching the correct bearing plate and upper support with your shock absorbers protects your investment and keeps your chassis feeling sharp.

Compatibility check

We will verify fitment before dispatch. Add your UK registration or last 7 of the VIN at checkout so we can confirm this front upper mount is correct for your BMW.

Professional installation

Prefer expert fitting. Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Part numbers

• Bilstein reference: BILSTEIN-12-303144 / 12-303144
• EAN: 4025258879372
• UPC: 651860887081

Search terms customers use

BMW F48 upper mount, BMW F39 turret bearing, BMW F45 F46 bearing plate, shock top support, front spring seat, damper support assembly, upper strut bearing kit, BMW Active Tourer front mount, BMW Gran Tourer front bearing, Bilstein B1 mounting kit, 12-303144 mount, chassis top hat, suspension top bearing, BMW front turret mount, OE-spec mounting plate.