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BMW

Genuine BMW (OEM) Left (LH) Underfloor Panelling Bracket / Undertray/Underbody Support F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 F80 F82 F83 F87 Fits 125i 328i M2 M3 M4 Part No. 51757365567

Genuine BMW (OEM) Left (LH) Underfloor Panelling Bracket / Undertray/Underbody Support F20 F21 F22 F23 F30 F31 F34 F32 F33 F36 F80 F82 F83 F87 Fits 125i 328i M2 M3 M4 Part No. 51757365567

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BMW LHS Floor Shield Support Bracket, F2x F3x F8x Platforms, Part Number 51757365567

Restore the underbody to factory-tight and rattle-free with this left-hand side floor shield support bracket. This genuine BMW mounting stay secures the aero tray and under-engine cover on the nearside, keeping the belly plate aligned, quiet and properly sealed for optimum airflow and protection from road spray.

If your floor pan cover is hanging low, vibrating, or has broken tabs after a speed bump or kerb strike, this is the direct replacement you need. As an original BMW component it fits perfectly on the LHS using the existing mounting points, delivering the precise fit and finish enthusiasts expect.

  • Authentic BMW hardware for exact LHS fit on F2x, F3x and F8x chassis
  • Secures the under-engine cover, splash shield and aero tray for stable, quiet running
  • Helps maintain aerodynamic efficiency and underbody airflow
  • Prevents droop, rubbing noises and loose panel movement
  • Simple swap with factory fasteners for a clean, OE result

Part Number

51757365567

Vehicle Compatibility

Designed for the following BMW platforms and models on the left-hand side:

  • 1 Series: F20, F21
  • 2 Series: F22, F23, F87 M2
  • 3 Series: F30, F31, F34, F80 M3
  • 4 Series: F32, F33, F36, F82 M4, F83 M4

Popular engines and trims covered include 125i, 328i, M2, M3 and M4. If you are unsure, we are happy to confirm before you buy.

When to replace

  • Under-engine cover or belly plate is sagging on the left
  • Buzzing or scraping noises from the nearside floor shield
  • Damage after road debris, kerbs or speed humps
  • Missing or cracked original support stay

Proven by us

We have installed this part on customer cars and our own builds across F-series platforms. Feedback is consistently strong: spot-on alignment, solid support and a tidy, OEM look that lasts.

Fitting and support

Prefer professional installation. Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and advice on any related clips or hardware your car may need.

Free fitment check

Add your UK registration or the last 7 of your VIN at checkout and we will confirm compatibility for part number 51757365567 before dispatch.

Also searched as

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