Burger Motorsports BMS N55 Oil Catch Can Kit for BMW F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 - M135i M235i 335i 435i (PCV Blow-By Fix)

Oil Air Separator Upgrade for BMW F-Series N55 1 Series 2 Series 3 Series 4 Series

Keep your turbo straight six breathing clean and your boost pipes dry with the proven oil air separator from Burger Motorsports. This catch tank kit is a direct fit for F-series N55 models including M135i, M235i, 335i and 435i, and is a brilliant reliability and maintenance upgrade for daily driven, remapped and track-prepped cars alike.

Excess crankcase vapour carries oil mist that coats the intake tract, charge pipes and intercooler. Over time that film contributes to valve deposits on direct injection engines, can affect octane, and makes the PCV system work harder. This closed loop separator traps the contamination before it reaches the intake, helping the N55 stay consistent between services and keeping airflow components cleaner for longer.

Key benefits

• Engine protection for F20 F21 F22 F23 F30 F31 F32 F33 F34 F36 N55 models
• Reduces blowby oil in boost pipes, intake runners and the intercooler core
• Helps limit intake valve build up on DI engines and supports stable performance
• Cold side mounting for efficient vapour condensation and easy access
• High flow design with large bore hose routing to maintain proper crankcase ventilation
• Closed loop system with no vent to atmosphere smell
• CNC machined billet aluminium canister with black anodised finish
• Simple to service with a screw-off base and integrated 1/8 NPT drain
• Completely reversible installation using factory-style mounts and hardware
• Made in the USA by Burger Motorsports and covered by a lifetime warranty

Why it works so well

The internal baffle system separates oil mist from the air stream without creating restriction, so the PCV system continues to ventilate correctly even on tuned vehicles. Trapped oil collects in the can rather than cycling back through the intake. Emptying is quick and clean at service intervals or every few months depending on use.

Applications

• F20 F21 1 Series with N55 engine – M135i
• F22 F23 2 Series – M235i
• F30 F31 F34 3 Series – 335i including xDrive
• F32 F33 F36 4 Series – 435i including xDrive

What you receive

• Burger Motorsports oil air separator canister and bracket
• Pre-formed hoses and fittings sized for the N55 PCV system
• Clamps, hardware and instructions for a neat, factory-style install

Install and fitting

Typical fitting time is around 20 minutes with basic hand tools. Everything required is included and the kit is fully reversible. Prefer professional installation or a same-day service? Book with MJ Modifications in Warwickshire – request a fitting quote at info@mjmodifications.co.uk.

Part number

BMS039

Quality and warranty

Precision machined in the USA by Burger Motorsports. Backed by a lifetime warranty on the canister for peace of mind.

Compatibility check

We verify fitment before dispatch. Add your UK registration or the last 7 digits of your VIN at checkout so we can confirm the correct application for your N55 F-series BMW.

Real world results

We have installed this kit on numerous customer M135i, M235i, 335i and 435i builds. Feedback is consistently positive – cleaner boost pipes, less oil in the intake and a tidy OEM-style fit that is easy to service.

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