Bilstein B4 Front Left Twintube Strut Assembly - BMW F25/F26 2011-2018

Bilstein B4 OE Replacement dampers are engineered to restore the original ride quality, handling and safety of the vehicle while meeting or exceeding OE standards. This unit is a twintube gas pressure strut for the front left corner, built with Bilstein Gas Pressure Technology so damping stays consistent under load and holds high power reserves. Bilstein supplies its struts in an unloaded state, so the box contains the damper and strut housing only. The coil spring, upper strut mount, bearing, dust boot and bump stop are carried over from the original assembly or sourced separately.

Specifications

Documents: Installation Instructions (PDF)  |  Safety Data Sheet (PDF)

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy