Genuine BMW N55 Turbo to Downpipe V-Band Gasket OE 18307581970 (M2, M135i, M235i, 335i, 435i)

BMW N55 Turbocharger Outlet V-Band Seal Ring OE 18307581970

Perfect seal. Zero faff. If you are swapping the front pipe on your N55-powered BMW for a high-flow sports cat or a catless pipe, this OE turbo outlet sealing ring is the essential part you should not reuse. It delivers a tight, leak-free joint at the turbocharger V-band connection, keeping boost strong and exhaust notes clean on M2, M135i, M235i, 335i and 435i models.

As a genuine BMW component, it matches factory tolerances for an effortless fit and long service life. We use this seal ring in-house on customer cars and our experience has been faultless. Owners love the proper fitment and the way it prevents annoying blows and rattles after a front pipe upgrade.

Why this OE turbo outlet seal is the right choice

• Original BMW part for exact fit on N55 engines and F-series platforms
• Ensures a reliable gas-tight join between turbo outlet and front pipe
• Ideal when fitting a high-flow catalyst or a decat front section
• Prevents exhaust leaks that can affect performance and MOT emissions
• Direct replacement with no trimming or modifications required
• Trusted by MJ Modifications and our customers for leak-free results

Top tip: pair this seal ring with a fresh V-band exhaust clamp for the most secure connection. Reusing tired hardware can compromise the joint.

Part number

BMW OE: 18307581970

Vehicle fitment highlights

Designed for the BMW N55 turbo engine across key F-series models, including:

• BMW M2 F87
• BMW 1 Series F20 F21: M135i
• BMW 2 Series F22 F23: M235i
• BMW 3 Series F30 F31: 335i
• BMW 4 Series F32 F33 F36: 435i

Also used on various BMW and MINI petrol turbo applications that utilise a V-band turbo outlet. For engines such as N20, N26 and B48 this seal is commonly listed, but always confirm before ordering.

Unsure about compatibility? Use our Fitment Check before dispatch. Provide your UK registration or the last 7 of your VIN at checkout and we will verify suitability.

Fitting service

Want it installed properly first time? MJ Modifications in Warwickshire can supply and fit this seal ring and associated hardware. Request a fitting quote at info@mjmodifications.co.uk.

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