BMW 1/3 Series & Z4 Front Left Steering Knuckle (2006–2016)

BMW designed this Original BMW Front Left Steering Knuckle for the steering system on BMW 1/3 Series & Z4 from 2006–2016. It supports the wheel hub and joins the steering and suspension hardware. The supported range includes 128i, 135i, 135is, 325i, 328i, and 330i, plus additional listed variants. BMW states that Original BMW Parts are designed, tested, and manufactured by BMW.

Technical Details

• Manufacturer: BMW
• Component: Front Left Steering Knuckle
• Manufacturer part number: 31-21-6-793-923
• Production range: 2006–2016
• Vehicle applications: BMW 1/3 Series & Z4
• Primary function: supports the wheel hub and joins the steering and suspension hardware
• Listed models: 128i, 135i, 135is, 325i, 328i, and 330i, plus additional listed variants
• Position: Front Left

Fitment & Compatibility

The supported applications appear in the table below; verify the complete vehicle details before purchase. Confirm steering-system version, mounting position, side, and production date before ordering. PMB Performance can review the VIN when model-year or equipment details are unclear, drawing on more than 20 years of European-parts experience.