The Bilstein B6 Performance front left strut assembly is a complete 36 mm monotube gas pressure damper unit that replaces the OE left side strut, with a fixed spring seat, a blue bellows boot, and application specific valving matched to the factory springs so ride height is unchanged. The monotube layout keeps the oil and the high pressure gas charge separated, which resists aeration and damping fade when the strut is worked hard over broken pavement. Damping is set at the factory calibration and there are no external adjusters. The assembly measures 16.54 in collapsed and 19.86 in extended and uses a stem upper mount with a base cup lower mount.
| Type | Monotube gas pressure strut assembly (Bilstein B6 Performance) |
| Position | Front left |
| Strut Tube Diameter | 36 mm |
| Damping Adjustment | None, fixed application specific valving |
| Ride Height | OE ride height, designed for the factory springs |
| Spring Seat | Fixed, included |
| Finish | Yellow paint with blue bellows boot |
| Collapsed Length | 16.54 in (420.0 mm) |
| Extended Length | 19.86 in (504.5 mm) |
| Upper Mount | Stem |
| Lower Mount | Base cup |
| Quantity | 1 (sold individually) |
| Part Number | 35-120377 |
| Warranty | Bilstein limited lifetime warranty to the original purchaser, non-transferable |
Documents: Installation Instructions (PDF) | Safety Data Sheet (PDF) | Safety Data Sheet, Suspension Systems (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2006 | BMW | 325i | Base |
| 2007-2013 | BMW | 328i | Base |
| 2006 | BMW | 330i | Base |
| 2009-2011 | BMW | 335d | Base |
| 2007-2013 | BMW | 335i | Base |
| 2011-2013 | BMW | 335is | Base |
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