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BMW

Genuine BMW S55 Exhaust Flange Plate 3-Bolt - Cat/Downpipe to Midpipe Connector Coupling for F80 M3, F82/F83 M4 & F87 M2 Competition (2014-2019) | Catalytic Converter to Front Section Joiner | BMW OE 18327850430

Genuine BMW S55 Exhaust Flange Plate 3-Bolt - Cat/Downpipe to Midpipe Connector Coupling for F80 M3, F82/F83 M4 & F87 M2 Competition (2014-2019) | Catalytic Converter to Front Section Joiner | BMW OE 18327850430

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Original BMW S55 Catalyst to Front Section Connector Flange for M2 Competition, M3 and M4

Keep your S55 exhaust tight, aligned and rattle free with this factory BMW connector flange that links the catalytic converters to the front or centre section on M2 Competition, M3 and M4 models. As an original BMW component, it uses the correct 3-bolt pattern and precise sealing face to restore a proper gas-tight joint on your turbocharged straight-six.

Ideal when refitting performance down pipes, swapping high-flow cats, solving a blowing joint or repairing a worn flange surface, this OE part maintains factory geometry and eliminates annoying leaks and drone. We use this part in-house on our own S55 builds and customer cars, and it delivers the consistent fit and finish you expect from BMW.

Key advantages

  • Original BMW component for perfect alignment on S55 twin-turbo 3.0 petrol models
  • Correct 3-bolt flange profile for a secure, leak-free joint at the cat to midpipe connection
  • Prevents exhaust leaks that can trigger fault codes and ruin sound quality
  • Maintains factory tolerances for long-term reliability on road and track
  • Proven by MJ Modifications on multiple customer installations with outstanding results

Compatibility

Fits S55-powered BMW M models below. If unsure, we will verify using your reg or VIN.

  • BMW F87 M2 Competition LCI 09/2016 to 12/2019
  • BMW F80 M3 04/2012 to 06/2015
  • BMW F80 M3 LCI 01/2015 to 10/2018
  • BMW F82 M4 02/2013 to 02/2017
  • BMW F82 M4 LCI 05/2016 to 12/2019
  • BMW F83 M4 06/2013 to 02/2017
  • BMW F83 M4 LCI 05/2016 to 12/2019

Part number

BMW OE reference: 18327850430

Manufactured by

BMW - original equipment for S55 applications.

Installation and fitting

Professional fitting is recommended to ensure a perfect seal and correct orientation. Book your install with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Compatibility check

We run a fitment check before dispatch. Add your UK registration or the last 7 of your VIN at checkout and we will confirm suitability for your specific chassis.

Warranty

Two-year manufacturer warranty for UK customers and one-year manufacturer warranty for international customers when a valid VIN is provided and the part is used on a compatible vehicle.

Search-friendly terms

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