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BMW

Genuine BMW S55 Downpipe to Mid Pipe Exhaust Gasket (OEM 18307851168) - Fits F87 M2 Competition, F80 M3, F82/F83 M4 (CS/GTS)

Genuine BMW S55 Downpipe to Mid Pipe Exhaust Gasket (OEM 18307851168) - Fits F87 M2 Competition, F80 M3, F82/F83 M4 (CS/GTS)

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BMW OE Exhaust Joint Seal Ring for S55 - Front Pipe to Centre Pipe - Part No. 18307851168

Keep your S55-powered BMW tight, quiet and performing as it should with this genuine BMW exhaust connection seal. This factory sealing ring sits at the union between the front pipes and the centre section on S55 twin-turbo models, delivering a dependable gas-tight join that resists heat cycles and vibration.

Ideal whenever you remove the exhaust for maintenance or upgrades such as high-flow catted front pipes or de-cat front pipes, this OE component helps prevent blow-by, unwanted fumes and annoying ticking noises under load. Expect proper alignment, perfect fit and long-term reliability because it is an original BMW part, not an aftermarket substitute.

We run this exact seal ring on our own S55 builds and countless customer cars. Feedback is consistently positive for leak-free installation, easy fitment and lasting durability. If you are refreshing the system or swapping front pipes, replacing these seals is a smart, low-cost way to protect performance and refinement.

Why this BMW factory seal is the right choice

  • Original equipment quality for S55B30 - engineered for the heat and pressure at the turbo outlet to centre section joint
  • Creates a secure, gas-tight interface between front pipes and centre pipe to stop leaks
  • Perfect companion for performance front pipes, sport-cat or de-cat installs on M2C, M3 and M4
  • Restores proper back pressure and keeps cabin free from exhaust odours
  • Direct OE replacement - no modifications, no hassle

Sold individually. Two seals are required if replacing both banks on the S55. Update quantity to 2 before adding to basket.

Compatibility

  • BMW F87 M2 Competition 2018 - 2019
  • BMW F80 M3 2013 - 2019
  • BMW F82 M4 Coupe 2013 - 2019 including CS and GTS
  • BMW F83 M4 Convertible 2013 - 2019 including CS

Part number

BMW OE: 18307851168 (also written as 18 30 7 851 168)

Fitment check

We will confirm compatibility before dispatch. Add your UK registration or the last 7 characters of your VIN at checkout so we can verify this exhaust joint seal is correct for your vehicle.

Professional fitting

Want it installed properly first time We offer fitting at MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Manufacturer and warranty

Manufactured by BMW. Two-year manufacturer warranty for UK customers and one year for international customers when a VIN is supplied at checkout on compatible vehicles.

Common search terms

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