MMR BMW N55 Oil Catch Can & PCV Oil Separator Upgrade Kit F-Series F20 F21 F22 F23 F87 (1 Series M135i, 2 Series M235i, M2) – Billet Crankcase Breather/Catch Tank with PTFE Hoses – Blow-By Control – MMR17-0501

MMR N55 Crankcase Breather Upgrade for BMW F20 F21 F22 F23 F87

Keep your turbocharged N55 straight-six breathing clean and performing consistently with the MMR crankcase ventilation canister. Purpose-built for BMW F-series 1 Series and 2 Series performance models, this premium separator strips oil mist from blow-by gases before they return to the intake tract, helping to limit intake valve deposits on direct-injection engines and keeping your charge system cleaner for longer.

We run this unit on our own N55 builds and our customers rave about the results: cleaner intercoolers and pipework, smoother power delivery and dependable performance on the road and at track days. If you are searching for a BMW N55 breather can, PCV oil separator or crankcase catch tank solution for M135i, M235i or F87 M2, this is the easy, proven, bolt-on upgrade you want.

Key benefits

• Captures oil vapour and blow-by before it reaches the inlet manifold and charge pipe
• Helps reduce intake valve coking common to direct-injection turbo engines
• Promotes consistent performance and reliability over higher mileages
• Keeps the intake system and intercooler core cleaner, supporting efficient airflow
• Track-ready durability with daily-driver refinement

Engineered details

• CNC machined 6061-T6 aluminium body with an anodised finish for corrosion resistance
• Dedicated billet bracketry for a neat, OE-style install in the F-chassis bay
• Fluoropolymer-lined hoses with crimped motorsport hose ends for a secure, leak-free setup
• Replica cam cover adaptor for an exact factory-style connection to the PCV circuit
• Built-in dipstick for quick level checks between services
• Easy maintenance via drain plug or by unthreading the lower bowl section

Vehicle applications

• BMW 1 Series F20 F21 M135i with N55 engine 2011 to 2018
• BMW 2 Series F22 F23 M235i with N55 engine 2012 to 2016
• BMW F87 M2 with N55 engine 2014 to 2018

Installation

Supplied as a complete, direct-fit kit with hoses, fittings and bracket for a straightforward install. Prefer professional fitting. Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote.

Part number

MMR17-0501

Fitment confirmation

We can verify compatibility before dispatch. Add your UK registration or the last 7 of your VIN at checkout and we will confirm the correct setup for your N55-powered BMW.

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